let Inst{4} = 0b0;
let Inst{3-1} = Qm{2-0};
let Inst{0} = 0b1;
- let validForTailPredication = 1;
}
foreach suffix = ["s8", "s16", "s32", "u8", "u16", "u32",
}
bool LowOverheadLoop::RecordVPTBlocks(MachineInstr* MI) {
+ if (CannotTailPredicate)
+ return false;
+
// Only support a single vctp.
if (isVCTP(MI) && VCTP)
return false;
VPTBlocks.emplace_back(MI, CurrentPredicate);
CurrentBlock = &VPTBlocks.back();
return true;
- }
-
- if (isVCTP(MI))
+ } else if (isVCTP(MI))
VCTP = MI;
+ else if (MI->getOpcode() == ARM::MVE_VPSEL ||
+ MI->getOpcode() == ARM::MVE_VPNOT)
+ return false;
+
+ // TODO: Allow VPSEL and VPNOT, we currently cannot because:
+ // 1) It will use the VPR as a predicate operand, but doesn't have to be
+ // instead a VPT block, which means we can assert while building up
+ // the VPT block because we don't find another VPST to being a new
+ // one.
+ // 2) VPSEL still requires a VPR operand even after tail predicating,
+ // which means we can't remove it unless there is another
+ // instruction, such as vcmp, that can provide the VPR def.
unsigned VPROpNum = MI->getNumOperands() - 1;
bool IsUse = false;
--- /dev/null
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -mtriple=thumbv8.1m.main -mattr=+mve -run-pass=arm-low-overhead-loops %s -o - --verify-machineinstrs | FileCheck %s
+
+# Test that VPNOTs cannot be within a tail predicated loop.
+
+--- |
+ define dso_local void @inloop_vpnot(i16* nocapture readonly %a, i16* nocapture readonly %b, i16* nocapture readonly %c, i16* nocapture readonly %d, i32* nocapture %e, i32 %N) local_unnamed_addr #0 {
+ entry:
+ %cmp9 = icmp eq i32 %N, 0
+ %tmp = add i32 %N, 3
+ %tmp1 = lshr i32 %tmp, 2
+ %tmp2 = shl nuw i32 %tmp1, 2
+ %tmp3 = add i32 %tmp2, -4
+ %tmp4 = lshr i32 %tmp3, 2
+ %tmp5 = add nuw nsw i32 %tmp4, 1
+ br i1 %cmp9, label %for.cond.cleanup, label %vector.ph
+
+ vector.ph: ; preds = %entry
+ call void @llvm.set.loop.iterations.i32(i32 %tmp5)
+ br label %vector.body
+
+ vector.body: ; preds = %vector.body, %vector.ph
+ %lsr.iv1 = phi i32 [ %lsr.iv.next, %vector.body ], [ %tmp5, %vector.ph ]
+ %lsr.iv.e = phi i32* [ %scevgep.e, %vector.body ], [ %e, %vector.ph ]
+ %lsr.iv.d = phi i16* [ %scevgep.d, %vector.body ], [ %d, %vector.ph ]
+ %lsr.iv.c = phi i16* [ %scevgep.c, %vector.body ], [ %c, %vector.ph ]
+ %lsr.iv18 = phi i16* [ %scevgep19, %vector.body ], [ %b, %vector.ph ]
+ %lsr.iv = phi i16* [ %scevgep, %vector.body ], [ %a, %vector.ph ]
+ %vec.phi = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %tmp14, %vector.body ]
+ %tmp7 = phi i32 [ %N, %vector.ph ], [ %tmp9, %vector.body ]
+ %lsr.iv17 = bitcast i16* %lsr.iv to <4 x i16>*
+ %lsr.iv1820 = bitcast i16* %lsr.iv18 to <4 x i16>*
+ %lsr.iv1820.c = bitcast i16* %lsr.iv.c to <4 x i16>*
+ %lsr.iv17.d = bitcast i16* %lsr.iv.d to <4 x i16>*
+ %lsr.cast.e = bitcast i32* %lsr.iv.e to <4 x i32>*
+ %tmp8 = call <4 x i1> @llvm.arm.mve.vctp32(i32 %tmp7)
+ %tmp9 = sub i32 %tmp7, 4
+ %wide.masked.load = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv17, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
+ %tmp10 = sext <4 x i16> %wide.masked.load to <4 x i32>
+ %wide.masked.load14 = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv1820, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
+ %tmp11 = sext <4 x i16> %wide.masked.load14 to <4 x i32>
+ %wide.masked.load.c = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv1820.c, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
+ %sext.load.c = sext <4 x i16> %wide.masked.load.c to <4 x i32>
+ %wide.masked.load.d = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv17.d, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
+ %sext.load.d = sext <4 x i16> %wide.masked.load.d to <4 x i32>
+ %tmp12 = mul nsw <4 x i32> %tmp11, %tmp10
+ %mul.2 = mul nsw <4 x i32> %sext.load.c, %sext.load.d
+ %tmp13 = add <4 x i32> %tmp12, %mul.2
+ %tmp14 = add <4 x i32> %tmp13, %vec.phi
+ %vpnot = xor <4 x i1> %tmp8, <i1 true, i1 true, i1 true, i1 true>
+ call void @llvm.masked.store.v4i32.p0v4i32(<4 x i32> %tmp14, <4 x i32>* %lsr.cast.e, i32 4, <4 x i1> %vpnot)
+ %scevgep = getelementptr i16, i16* %lsr.iv, i32 4
+ %scevgep19 = getelementptr i16, i16* %lsr.iv18, i32 4
+ %scevgep.c = getelementptr i16, i16* %lsr.iv.c, i32 4
+ %scevgep.d = getelementptr i16, i16* %lsr.iv.d, i32 4
+ %scevgep.e = getelementptr i32, i32* %lsr.iv.e, i32 4
+ %tmp15 = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %lsr.iv1, i32 1)
+ %tmp16 = icmp ne i32 %tmp15, 0
+ %lsr.iv.next = add nsw i32 %lsr.iv1, -1
+ br i1 %tmp16, label %vector.body, label %for.cond.cleanup
+
+ for.cond.cleanup: ; preds = %vector.body, %entry
+ ret void
+ }
+ declare <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>*, i32 immarg, <4 x i1>, <4 x i16>) #1
+ declare void @llvm.masked.store.v4i32.p0v4i32(<4 x i32>, <4 x i32>*, i32 immarg, <4 x i1>) #2
+ declare void @llvm.set.loop.iterations.i32(i32) #3
+ declare i32 @llvm.loop.decrement.reg.i32.i32.i32(i32, i32) #3
+ declare <4 x i1> @llvm.arm.mve.vctp32(i32) #4
+
+...
+---
+name: inloop_vpnot
+alignment: 2
+exposesReturnsTwice: false
+legalized: false
+regBankSelected: false
+selected: false
+failedISel: false
+tracksRegLiveness: true
+hasWinCFI: false
+registers: []
+liveins:
+ - { reg: '$r0', virtual-reg: '' }
+ - { reg: '$r1', virtual-reg: '' }
+ - { reg: '$r2', virtual-reg: '' }
+ - { reg: '$r3', virtual-reg: '' }
+frameInfo:
+ isFrameAddressTaken: false
+ isReturnAddressTaken: false
+ hasStackMap: false
+ hasPatchPoint: false
+ stackSize: 16
+ offsetAdjustment: 0
+ maxAlignment: 4
+ adjustsStack: false
+ hasCalls: false
+ stackProtector: ''
+ maxCallFrameSize: 0
+ cvBytesOfCalleeSavedRegisters: 0
+ hasOpaqueSPAdjustment: false
+ hasVAStart: false
+ hasMustTailInVarArgFunc: false
+ localFrameSize: 0
+ savePoint: ''
+ restorePoint: ''
+fixedStack:
+ - { id: 0, type: default, offset: 4, size: 4, alignment: 4, stack-id: default,
+ isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+ - { id: 1, type: default, offset: 0, size: 4, alignment: 8, stack-id: default,
+ isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+stack:
+ - { id: 0, name: '', type: spill-slot, offset: -4, size: 4, alignment: 4,
+ stack-id: default, callee-saved-register: '$lr', callee-saved-restored: false,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+ - { id: 1, name: '', type: spill-slot, offset: -8, size: 4, alignment: 4,
+ stack-id: default, callee-saved-register: '$r7', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+ - { id: 2, name: '', type: spill-slot, offset: -12, size: 4, alignment: 4,
+ stack-id: default, callee-saved-register: '$r5', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+ - { id: 3, name: '', type: spill-slot, offset: -16, size: 4, alignment: 4,
+ stack-id: default, callee-saved-register: '$r4', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+callSites: []
+constants: []
+machineFunctionInfo: {}
+body: |
+ ; CHECK-LABEL: name: inloop_vpnot
+ ; CHECK: bb.0.entry:
+ ; CHECK: successors: %bb.3(0x30000000), %bb.1(0x50000000)
+ ; CHECK: liveins: $r0, $r1, $r2, $r3, $r4, $r5, $r7, $lr
+ ; CHECK: frame-setup tPUSH 14, $noreg, killed $r4, killed $r5, killed $r7, killed $lr, implicit-def $sp, implicit $sp
+ ; CHECK: frame-setup CFI_INSTRUCTION def_cfa_offset 16
+ ; CHECK: frame-setup CFI_INSTRUCTION offset $lr, -4
+ ; CHECK: frame-setup CFI_INSTRUCTION offset $r7, -8
+ ; CHECK: frame-setup CFI_INSTRUCTION offset $r5, -12
+ ; CHECK: frame-setup CFI_INSTRUCTION offset $r4, -16
+ ; CHECK: renamable $r12 = t2LDRi12 $sp, 20, 14, $noreg :: (load 4 from %fixed-stack.1)
+ ; CHECK: t2CMPri renamable $r12, 0, 14, $noreg, implicit-def $cpsr
+ ; CHECK: tBcc %bb.3, 0, killed $cpsr
+ ; CHECK: bb.1.vector.ph:
+ ; CHECK: successors: %bb.2(0x80000000)
+ ; CHECK: liveins: $r0, $r1, $r2, $r3, $r12
+ ; CHECK: renamable $lr = t2ADDri renamable $r12, 3, 14, $noreg, $noreg
+ ; CHECK: renamable $r4, dead $cpsr = tMOVi8 1, 14, $noreg
+ ; CHECK: renamable $lr = t2BICri killed renamable $lr, 3, 14, $noreg, $noreg
+ ; CHECK: renamable $r5 = tLDRspi $sp, 4, 14, $noreg :: (load 4 from %fixed-stack.0, align 8)
+ ; CHECK: renamable $lr = t2SUBri killed renamable $lr, 4, 14, $noreg, $noreg
+ ; CHECK: renamable $q0 = MVE_VMOVimmi32 0, 0, $noreg, undef renamable $q0
+ ; CHECK: renamable $lr = nuw nsw t2ADDrs killed renamable $r4, killed renamable $lr, 19, 14, $noreg, $noreg
+ ; CHECK: $lr = t2DLS renamable $lr
+ ; CHECK: $r4 = tMOVr killed $lr, 14, $noreg
+ ; CHECK: bb.2.vector.body:
+ ; CHECK: successors: %bb.2(0x7c000000), %bb.3(0x04000000)
+ ; CHECK: liveins: $q0, $r0, $r1, $r2, $r3, $r4, $r5, $r12
+ ; CHECK: renamable $vpr = MVE_VCTP32 renamable $r12, 0, $noreg
+ ; CHECK: MVE_VPST 4, implicit $vpr
+ ; CHECK: renamable $r3, renamable $q1 = MVE_VLDRHS32_post killed renamable $r3, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv17.d, align 2)
+ ; CHECK: renamable $r2, renamable $q2 = MVE_VLDRHS32_post killed renamable $r2, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv1820.c, align 2)
+ ; CHECK: renamable $q1 = nsw MVE_VMULi32 killed renamable $q2, killed renamable $q1, 0, $noreg, undef renamable $q1
+ ; CHECK: MVE_VPST 4, implicit $vpr
+ ; CHECK: renamable $r0, renamable $q2 = MVE_VLDRHS32_post killed renamable $r0, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv17, align 2)
+ ; CHECK: renamable $r1, renamable $q3 = MVE_VLDRHS32_post killed renamable $r1, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv1820, align 2)
+ ; CHECK: renamable $q2 = nsw MVE_VMULi32 killed renamable $q3, killed renamable $q2, 0, $noreg, undef renamable $q2
+ ; CHECK: $lr = tMOVr $r4, 14, $noreg
+ ; CHECK: renamable $q1 = MVE_VADDi32 killed renamable $q2, killed renamable $q1, 0, $noreg, undef renamable $q1
+ ; CHECK: renamable $r4, dead $cpsr = nsw tSUBi8 killed $r4, 1, 14, $noreg
+ ; CHECK: renamable $r12 = t2SUBri killed renamable $r12, 4, 14, $noreg, $noreg
+ ; CHECK: renamable $q0 = MVE_VADDi32 killed renamable $q1, killed renamable $q0, 0, $noreg, undef renamable $q0
+ ; CHECK: renamable $vpr = MVE_VPNOT killed renamable $vpr, 0, $noreg
+ ; CHECK: MVE_VPST 8, implicit $vpr
+ ; CHECK: renamable $r5 = MVE_VSTRWU32_post renamable $q0, killed renamable $r5, 16, 1, killed renamable $vpr :: (store 16 into %ir.lsr.cast.e, align 4)
+ ; CHECK: $lr = t2LEUpdate killed renamable $lr, %bb.2
+ ; CHECK: bb.3.for.cond.cleanup:
+ ; CHECK: tPOP_RET 14, $noreg, def $r4, def $r5, def $r7, def $pc
+ bb.0.entry:
+ successors: %bb.3(0x30000000), %bb.1(0x50000000)
+ liveins: $r0, $r1, $r2, $r3, $r4, $r5, $r7, $lr
+
+ frame-setup tPUSH 14, $noreg, killed $r4, killed $r5, killed $r7, killed $lr, implicit-def $sp, implicit $sp
+ frame-setup CFI_INSTRUCTION def_cfa_offset 16
+ frame-setup CFI_INSTRUCTION offset $lr, -4
+ frame-setup CFI_INSTRUCTION offset $r7, -8
+ frame-setup CFI_INSTRUCTION offset $r5, -12
+ frame-setup CFI_INSTRUCTION offset $r4, -16
+ renamable $r12 = t2LDRi12 $sp, 20, 14, $noreg :: (load 4 from %fixed-stack.0)
+ t2CMPri renamable $r12, 0, 14, $noreg, implicit-def $cpsr
+ tBcc %bb.3, 0, killed $cpsr
+
+ bb.1.vector.ph:
+ successors: %bb.2(0x80000000)
+ liveins: $r0, $r1, $r2, $r3, $r12
+
+ renamable $lr = t2ADDri renamable $r12, 3, 14, $noreg, $noreg
+ renamable $r4, dead $cpsr = tMOVi8 1, 14, $noreg
+ renamable $lr = t2BICri killed renamable $lr, 3, 14, $noreg, $noreg
+ renamable $r5 = tLDRspi $sp, 4, 14, $noreg :: (load 4 from %fixed-stack.1, align 8)
+ renamable $lr = t2SUBri killed renamable $lr, 4, 14, $noreg, $noreg
+ renamable $q0 = MVE_VMOVimmi32 0, 0, $noreg, undef renamable $q0
+ renamable $lr = nuw nsw t2ADDrs killed renamable $r4, killed renamable $lr, 19, 14, $noreg, $noreg
+ t2DoLoopStart renamable $lr
+ $r4 = tMOVr killed $lr, 14, $noreg
+
+ bb.2.vector.body:
+ successors: %bb.2(0x7c000000), %bb.3(0x04000000)
+ liveins: $q0, $r0, $r1, $r2, $r3, $r4, $r5, $r12
+
+ renamable $vpr = MVE_VCTP32 renamable $r12, 0, $noreg
+ MVE_VPST 4, implicit $vpr
+ renamable $r3, renamable $q1 = MVE_VLDRHS32_post killed renamable $r3, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv17.d, align 2)
+ renamable $r2, renamable $q2 = MVE_VLDRHS32_post killed renamable $r2, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv1820.c, align 2)
+ renamable $q1 = nsw MVE_VMULi32 killed renamable $q2, killed renamable $q1, 0, $noreg, undef renamable $q1
+ MVE_VPST 4, implicit $vpr
+ renamable $r0, renamable $q2 = MVE_VLDRHS32_post killed renamable $r0, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv17, align 2)
+ renamable $r1, renamable $q3 = MVE_VLDRHS32_post killed renamable $r1, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv1820, align 2)
+ renamable $q2 = nsw MVE_VMULi32 killed renamable $q3, killed renamable $q2, 0, $noreg, undef renamable $q2
+ $lr = tMOVr $r4, 14, $noreg
+ renamable $q1 = MVE_VADDi32 killed renamable $q2, killed renamable $q1, 0, $noreg, undef renamable $q1
+ renamable $r4, dead $cpsr = nsw tSUBi8 killed $r4, 1, 14, $noreg
+ renamable $r12 = t2SUBri killed renamable $r12, 4, 14, $noreg, $noreg
+ renamable $q0 = MVE_VADDi32 killed renamable $q1, killed renamable $q0, 0, $noreg, undef renamable $q0
+ renamable $vpr = MVE_VPNOT killed renamable $vpr, 0, $noreg
+ MVE_VPST 8, implicit $vpr
+ renamable $r5 = MVE_VSTRWU32_post renamable $q0, killed renamable $r5, 16, 1, killed renamable $vpr :: (store 16 into %ir.lsr.cast.e, align 4)
+ renamable $lr = t2LoopDec killed renamable $lr, 1
+ t2LoopEnd killed renamable $lr, %bb.2, implicit-def dead $cpsr
+ tB %bb.3, 14, $noreg
+
+ bb.3.for.cond.cleanup:
+ tPOP_RET 14, $noreg, def $r4, def $r5, def $r7, def $pc
+
+...
--- /dev/null
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -mtriple=thumbv8.1m.main -mattr=+mve -run-pass=arm-low-overhead-loops %s -o - --verify-machineinstrs | FileCheck %s
+
+# Test that a predicated VPNOT cannot be in a tail predicated loop.
+
+--- |
+ define dso_local void @inloop_vpnot(i16* nocapture readonly %a, i16* nocapture readonly %b, i16* nocapture readonly %c, i16* nocapture readonly %d, i32* nocapture %e, i32 %N) local_unnamed_addr #0 {
+ entry:
+ %cmp9 = icmp eq i32 %N, 0
+ %tmp = add i32 %N, 3
+ %tmp1 = lshr i32 %tmp, 2
+ %tmp2 = shl nuw i32 %tmp1, 2
+ %tmp3 = add i32 %tmp2, -4
+ %tmp4 = lshr i32 %tmp3, 2
+ %tmp5 = add nuw nsw i32 %tmp4, 1
+ br i1 %cmp9, label %for.cond.cleanup, label %vector.ph
+
+ vector.ph: ; preds = %entry
+ call void @llvm.set.loop.iterations.i32(i32 %tmp5)
+ br label %vector.body
+
+ vector.body: ; preds = %vector.body, %vector.ph
+ %lsr.iv1 = phi i32 [ %lsr.iv.next, %vector.body ], [ %tmp5, %vector.ph ]
+ %lsr.iv.e = phi i32* [ %scevgep.e, %vector.body ], [ %e, %vector.ph ]
+ %lsr.iv.d = phi i16* [ %scevgep.d, %vector.body ], [ %d, %vector.ph ]
+ %lsr.iv.c = phi i16* [ %scevgep.c, %vector.body ], [ %c, %vector.ph ]
+ %lsr.iv18 = phi i16* [ %scevgep19, %vector.body ], [ %b, %vector.ph ]
+ %lsr.iv = phi i16* [ %scevgep, %vector.body ], [ %a, %vector.ph ]
+ %vec.phi = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %tmp14, %vector.body ]
+ %tmp7 = phi i32 [ %N, %vector.ph ], [ %tmp9, %vector.body ]
+ %lsr.iv17 = bitcast i16* %lsr.iv to <4 x i16>*
+ %lsr.iv1820 = bitcast i16* %lsr.iv18 to <4 x i16>*
+ %lsr.iv1820.c = bitcast i16* %lsr.iv.c to <4 x i16>*
+ %lsr.iv17.d = bitcast i16* %lsr.iv.d to <4 x i16>*
+ %lsr.cast.e = bitcast i32* %lsr.iv.e to <4 x i32>*
+ %tmp8 = call <4 x i1> @llvm.arm.mve.vctp32(i32 %tmp7)
+ %tmp9 = sub i32 %tmp7, 4
+ %wide.masked.load = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv17, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
+ %tmp10 = sext <4 x i16> %wide.masked.load to <4 x i32>
+ %wide.masked.load14 = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv1820, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
+ %tmp11 = sext <4 x i16> %wide.masked.load14 to <4 x i32>
+ %wide.masked.load.c = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv1820.c, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
+ %sext.load.c = sext <4 x i16> %wide.masked.load.c to <4 x i32>
+ %wide.masked.load.d = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv17.d, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
+ %sext.load.d = sext <4 x i16> %wide.masked.load.d to <4 x i32>
+ %tmp12 = mul nsw <4 x i32> %tmp11, %tmp10
+ %mul.2 = mul nsw <4 x i32> %sext.load.c, %sext.load.d
+ %tmp13 = add <4 x i32> %tmp12, %mul.2
+ %tmp14 = add <4 x i32> %tmp13, %vec.phi
+ %vpnot = xor <4 x i1> %tmp8, <i1 true, i1 true, i1 true, i1 true>
+ call void @llvm.masked.store.v4i32.p0v4i32(<4 x i32> %tmp14, <4 x i32>* %lsr.cast.e, i32 4, <4 x i1> %vpnot)
+ %scevgep = getelementptr i16, i16* %lsr.iv, i32 4
+ %scevgep19 = getelementptr i16, i16* %lsr.iv18, i32 4
+ %scevgep.c = getelementptr i16, i16* %lsr.iv.c, i32 4
+ %scevgep.d = getelementptr i16, i16* %lsr.iv.d, i32 4
+ %scevgep.e = getelementptr i32, i32* %lsr.iv.e, i32 4
+ %tmp15 = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %lsr.iv1, i32 1)
+ %tmp16 = icmp ne i32 %tmp15, 0
+ %lsr.iv.next = add nsw i32 %lsr.iv1, -1
+ br i1 %tmp16, label %vector.body, label %for.cond.cleanup
+
+ for.cond.cleanup: ; preds = %vector.body, %entry
+ ret void
+ }
+ declare <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>*, i32 immarg, <4 x i1>, <4 x i16>) #1
+ declare void @llvm.masked.store.v4i32.p0v4i32(<4 x i32>, <4 x i32>*, i32 immarg, <4 x i1>) #2
+ declare void @llvm.set.loop.iterations.i32(i32) #3
+ declare i32 @llvm.loop.decrement.reg.i32.i32.i32(i32, i32) #3
+ declare <4 x i1> @llvm.arm.mve.vctp32(i32) #4
+
+...
+---
+name: inloop_vpnot
+alignment: 2
+exposesReturnsTwice: false
+legalized: false
+regBankSelected: false
+selected: false
+failedISel: false
+tracksRegLiveness: true
+hasWinCFI: false
+registers: []
+liveins:
+ - { reg: '$r0', virtual-reg: '' }
+ - { reg: '$r1', virtual-reg: '' }
+ - { reg: '$r2', virtual-reg: '' }
+ - { reg: '$r3', virtual-reg: '' }
+frameInfo:
+ isFrameAddressTaken: false
+ isReturnAddressTaken: false
+ hasStackMap: false
+ hasPatchPoint: false
+ stackSize: 16
+ offsetAdjustment: 0
+ maxAlignment: 4
+ adjustsStack: false
+ hasCalls: false
+ stackProtector: ''
+ maxCallFrameSize: 0
+ cvBytesOfCalleeSavedRegisters: 0
+ hasOpaqueSPAdjustment: false
+ hasVAStart: false
+ hasMustTailInVarArgFunc: false
+ localFrameSize: 0
+ savePoint: ''
+ restorePoint: ''
+fixedStack:
+ - { id: 0, type: default, offset: 4, size: 4, alignment: 4, stack-id: default,
+ isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+ - { id: 1, type: default, offset: 0, size: 4, alignment: 8, stack-id: default,
+ isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+stack:
+ - { id: 0, name: '', type: spill-slot, offset: -4, size: 4, alignment: 4,
+ stack-id: default, callee-saved-register: '$lr', callee-saved-restored: false,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+ - { id: 1, name: '', type: spill-slot, offset: -8, size: 4, alignment: 4,
+ stack-id: default, callee-saved-register: '$r7', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+ - { id: 2, name: '', type: spill-slot, offset: -12, size: 4, alignment: 4,
+ stack-id: default, callee-saved-register: '$r5', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+ - { id: 3, name: '', type: spill-slot, offset: -16, size: 4, alignment: 4,
+ stack-id: default, callee-saved-register: '$r4', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+callSites: []
+constants: []
+machineFunctionInfo: {}
+body: |
+ ; CHECK-LABEL: name: inloop_vpnot
+ ; CHECK: bb.0.entry:
+ ; CHECK: successors: %bb.3(0x30000000), %bb.1(0x50000000)
+ ; CHECK: liveins: $r0, $r1, $r2, $r3, $r4, $r5, $r7, $lr
+ ; CHECK: frame-setup tPUSH 14, $noreg, killed $r4, killed $r5, killed $r7, killed $lr, implicit-def $sp, implicit $sp
+ ; CHECK: frame-setup CFI_INSTRUCTION def_cfa_offset 16
+ ; CHECK: frame-setup CFI_INSTRUCTION offset $lr, -4
+ ; CHECK: frame-setup CFI_INSTRUCTION offset $r7, -8
+ ; CHECK: frame-setup CFI_INSTRUCTION offset $r5, -12
+ ; CHECK: frame-setup CFI_INSTRUCTION offset $r4, -16
+ ; CHECK: renamable $r12 = t2LDRi12 $sp, 20, 14, $noreg :: (load 4 from %fixed-stack.1)
+ ; CHECK: t2CMPri renamable $r12, 0, 14, $noreg, implicit-def $cpsr
+ ; CHECK: tBcc %bb.3, 0, killed $cpsr
+ ; CHECK: bb.1.vector.ph:
+ ; CHECK: successors: %bb.2(0x80000000)
+ ; CHECK: liveins: $r0, $r1, $r2, $r3, $r12
+ ; CHECK: renamable $lr = t2ADDri renamable $r12, 3, 14, $noreg, $noreg
+ ; CHECK: renamable $r4, dead $cpsr = tMOVi8 1, 14, $noreg
+ ; CHECK: renamable $lr = t2BICri killed renamable $lr, 3, 14, $noreg, $noreg
+ ; CHECK: renamable $r5 = tLDRspi $sp, 4, 14, $noreg :: (load 4 from %fixed-stack.0, align 8)
+ ; CHECK: renamable $lr = t2SUBri killed renamable $lr, 4, 14, $noreg, $noreg
+ ; CHECK: renamable $q0 = MVE_VMOVimmi32 0, 0, $noreg, undef renamable $q0
+ ; CHECK: renamable $lr = nuw nsw t2ADDrs killed renamable $r4, killed renamable $lr, 19, 14, $noreg, $noreg
+ ; CHECK: $lr = t2DLS renamable $lr
+ ; CHECK: $r4 = tMOVr killed $lr, 14, $noreg
+ ; CHECK: bb.2.vector.body:
+ ; CHECK: successors: %bb.2(0x7c000000), %bb.3(0x04000000)
+ ; CHECK: liveins: $q0, $r0, $r1, $r2, $r3, $r4, $r5, $r12
+ ; CHECK: renamable $vpr = MVE_VCTP32 renamable $r12, 0, $noreg
+ ; CHECK: MVE_VPST 4, implicit $vpr
+ ; CHECK: renamable $r3, renamable $q1 = MVE_VLDRHS32_post killed renamable $r3, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv17.d, align 2)
+ ; CHECK: renamable $r2, renamable $q2 = MVE_VLDRHS32_post killed renamable $r2, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv1820.c, align 2)
+ ; CHECK: renamable $q1 = nsw MVE_VMULi32 killed renamable $q2, killed renamable $q1, 0, $noreg, undef renamable $q1
+ ; CHECK: MVE_VPST 4, implicit $vpr
+ ; CHECK: renamable $r0, renamable $q2 = MVE_VLDRHS32_post killed renamable $r0, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv17, align 2)
+ ; CHECK: renamable $r1, renamable $q3 = MVE_VLDRHS32_post killed renamable $r1, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv1820, align 2)
+ ; CHECK: renamable $q2 = nsw MVE_VMULi32 killed renamable $q3, killed renamable $q2, 0, $noreg, undef renamable $q2
+ ; CHECK: $lr = tMOVr $r4, 14, $noreg
+ ; CHECK: renamable $q1 = MVE_VADDi32 killed renamable $q2, killed renamable $q1, 0, $noreg, undef renamable $q1
+ ; CHECK: renamable $r4, dead $cpsr = nsw tSUBi8 killed $r4, 1, 14, $noreg
+ ; CHECK: renamable $r12 = t2SUBri killed renamable $r12, 4, 14, $noreg, $noreg
+ ; CHECK: renamable $q0 = MVE_VADDi32 killed renamable $q1, killed renamable $q0, 0, $noreg, undef renamable $q0
+ ; CHECK: MVE_VPST 4, implicit $vpr
+ ; CHECK: renamable $vpr = MVE_VPNOT renamable $vpr, 0, killed renamable $vpr
+ ; CHECK: renamable $r5 = MVE_VSTRWU32_post renamable $q0, killed renamable $r5, 16, 1, killed renamable $vpr :: (store 16 into %ir.lsr.cast.e, align 4)
+ ; CHECK: $lr = t2LEUpdate killed renamable $lr, %bb.2
+ ; CHECK: bb.3.for.cond.cleanup:
+ ; CHECK: tPOP_RET 14, $noreg, def $r4, def $r5, def $r7, def $pc
+ bb.0.entry:
+ successors: %bb.3(0x30000000), %bb.1(0x50000000)
+ liveins: $r0, $r1, $r2, $r3, $r4, $r5, $r7, $lr
+
+ frame-setup tPUSH 14, $noreg, killed $r4, killed $r5, killed $r7, killed $lr, implicit-def $sp, implicit $sp
+ frame-setup CFI_INSTRUCTION def_cfa_offset 16
+ frame-setup CFI_INSTRUCTION offset $lr, -4
+ frame-setup CFI_INSTRUCTION offset $r7, -8
+ frame-setup CFI_INSTRUCTION offset $r5, -12
+ frame-setup CFI_INSTRUCTION offset $r4, -16
+ renamable $r12 = t2LDRi12 $sp, 20, 14, $noreg :: (load 4 from %fixed-stack.0)
+ t2CMPri renamable $r12, 0, 14, $noreg, implicit-def $cpsr
+ tBcc %bb.3, 0, killed $cpsr
+
+ bb.1.vector.ph:
+ successors: %bb.2(0x80000000)
+ liveins: $r0, $r1, $r2, $r3, $r12
+
+ renamable $lr = t2ADDri renamable $r12, 3, 14, $noreg, $noreg
+ renamable $r4, dead $cpsr = tMOVi8 1, 14, $noreg
+ renamable $lr = t2BICri killed renamable $lr, 3, 14, $noreg, $noreg
+ renamable $r5 = tLDRspi $sp, 4, 14, $noreg :: (load 4 from %fixed-stack.1, align 8)
+ renamable $lr = t2SUBri killed renamable $lr, 4, 14, $noreg, $noreg
+ renamable $q0 = MVE_VMOVimmi32 0, 0, $noreg, undef renamable $q0
+ renamable $lr = nuw nsw t2ADDrs killed renamable $r4, killed renamable $lr, 19, 14, $noreg, $noreg
+ t2DoLoopStart renamable $lr
+ $r4 = tMOVr killed $lr, 14, $noreg
+
+ bb.2.vector.body:
+ successors: %bb.2(0x7c000000), %bb.3(0x04000000)
+ liveins: $q0, $r0, $r1, $r2, $r3, $r4, $r5, $r12
+
+ renamable $vpr = MVE_VCTP32 renamable $r12, 0, $noreg
+ MVE_VPST 4, implicit $vpr
+ renamable $r3, renamable $q1 = MVE_VLDRHS32_post killed renamable $r3, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv17.d, align 2)
+ renamable $r2, renamable $q2 = MVE_VLDRHS32_post killed renamable $r2, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv1820.c, align 2)
+ renamable $q1 = nsw MVE_VMULi32 killed renamable $q2, killed renamable $q1, 0, $noreg, undef renamable $q1
+ MVE_VPST 4, implicit $vpr
+ renamable $r0, renamable $q2 = MVE_VLDRHS32_post killed renamable $r0, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv17, align 2)
+ renamable $r1, renamable $q3 = MVE_VLDRHS32_post killed renamable $r1, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv1820, align 2)
+ renamable $q2 = nsw MVE_VMULi32 killed renamable $q3, killed renamable $q2, 0, $noreg, undef renamable $q2
+ $lr = tMOVr $r4, 14, $noreg
+ renamable $q1 = MVE_VADDi32 killed renamable $q2, killed renamable $q1, 0, $noreg, undef renamable $q1
+ renamable $r4, dead $cpsr = nsw tSUBi8 killed $r4, 1, 14, $noreg
+ renamable $r12 = t2SUBri killed renamable $r12, 4, 14, $noreg, $noreg
+ renamable $q0 = MVE_VADDi32 killed renamable $q1, killed renamable $q0, 0, $noreg, undef renamable $q0
+ MVE_VPST 4, implicit $vpr
+ renamable $vpr = MVE_VPNOT renamable $vpr, 0, killed renamable $vpr
+ renamable $r5 = MVE_VSTRWU32_post renamable $q0, killed renamable $r5, 16, 1, killed renamable $vpr :: (store 16 into %ir.lsr.cast.e, align 4)
+ renamable $lr = t2LoopDec killed renamable $lr, 1
+ t2LoopEnd killed renamable $lr, %bb.2, implicit-def dead $cpsr
+ tB %bb.3, 14, $noreg
+
+ bb.3.for.cond.cleanup:
+ tPOP_RET 14, $noreg, def $r4, def $r5, def $r7, def $pc
+
+...
--- /dev/null
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -mtriple=thumbv8.1m.main -mattr=+mve -run-pass=arm-low-overhead-loops %s -o - --verify-machineinstrs | FileCheck %s
+
+# Test that a VPNOT is not added to a max sized VPT block.
+
+--- |
+ define dso_local void @inloop_vpnot(i16* nocapture readonly %a, i16* nocapture readonly %b, i16* nocapture readonly %c, i16* nocapture readonly %d, i32* nocapture %e, i32 %N) local_unnamed_addr #0 {
+ entry:
+ %cmp9 = icmp eq i32 %N, 0
+ %tmp = add i32 %N, 3
+ %tmp1 = lshr i32 %tmp, 2
+ %tmp2 = shl nuw i32 %tmp1, 2
+ %tmp3 = add i32 %tmp2, -4
+ %tmp4 = lshr i32 %tmp3, 2
+ %tmp5 = add nuw nsw i32 %tmp4, 1
+ br i1 %cmp9, label %for.cond.cleanup, label %vector.ph
+
+ vector.ph: ; preds = %entry
+ call void @llvm.set.loop.iterations.i32(i32 %tmp5)
+ br label %vector.body
+
+ vector.body: ; preds = %vector.body, %vector.ph
+ %lsr.iv1 = phi i32 [ %lsr.iv.next, %vector.body ], [ %tmp5, %vector.ph ]
+ %lsr.iv.e = phi i32* [ %scevgep.e, %vector.body ], [ %e, %vector.ph ]
+ %lsr.iv.d = phi i16* [ %scevgep.d, %vector.body ], [ %d, %vector.ph ]
+ %lsr.iv.c = phi i16* [ %scevgep.c, %vector.body ], [ %c, %vector.ph ]
+ %lsr.iv18 = phi i16* [ %scevgep19, %vector.body ], [ %b, %vector.ph ]
+ %lsr.iv = phi i16* [ %scevgep, %vector.body ], [ %a, %vector.ph ]
+ %vec.phi = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %tmp14, %vector.body ]
+ %tmp7 = phi i32 [ %N, %vector.ph ], [ %tmp9, %vector.body ]
+ %lsr.iv17 = bitcast i16* %lsr.iv to <4 x i16>*
+ %lsr.iv1820 = bitcast i16* %lsr.iv18 to <4 x i16>*
+ %lsr.iv1820.c = bitcast i16* %lsr.iv.c to <4 x i16>*
+ %lsr.iv17.d = bitcast i16* %lsr.iv.d to <4 x i16>*
+ %lsr.cast.e = bitcast i32* %lsr.iv.e to <4 x i32>*
+ %tmp8 = call <4 x i1> @llvm.arm.mve.vctp32(i32 %tmp7)
+ %tmp9 = sub i32 %tmp7, 4
+ %wide.masked.load = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv17, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
+ %tmp10 = sext <4 x i16> %wide.masked.load to <4 x i32>
+ %wide.masked.load14 = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv1820, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
+ %tmp11 = sext <4 x i16> %wide.masked.load14 to <4 x i32>
+ %wide.masked.load.c = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv1820.c, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
+ %sext.load.c = sext <4 x i16> %wide.masked.load.c to <4 x i32>
+ %wide.masked.load.d = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv17.d, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
+ %sext.load.d = sext <4 x i16> %wide.masked.load.d to <4 x i32>
+ %tmp12 = mul nsw <4 x i32> %tmp11, %tmp10
+ %mul.2 = mul nsw <4 x i32> %sext.load.c, %sext.load.d
+ %tmp13 = add <4 x i32> %tmp12, %mul.2
+ %tmp14 = add <4 x i32> %tmp13, %vec.phi
+ %vpnot = xor <4 x i1> %tmp8, <i1 true, i1 true, i1 true, i1 true>
+ call void @llvm.masked.store.v4i32.p0v4i32(<4 x i32> %tmp14, <4 x i32>* %lsr.cast.e, i32 4, <4 x i1> %vpnot)
+ %scevgep = getelementptr i16, i16* %lsr.iv, i32 4
+ %scevgep19 = getelementptr i16, i16* %lsr.iv18, i32 4
+ %scevgep.c = getelementptr i16, i16* %lsr.iv.c, i32 4
+ %scevgep.d = getelementptr i16, i16* %lsr.iv.d, i32 4
+ %scevgep.e = getelementptr i32, i32* %lsr.iv.e, i32 4
+ %tmp15 = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %lsr.iv1, i32 1)
+ %tmp16 = icmp ne i32 %tmp15, 0
+ %lsr.iv.next = add nsw i32 %lsr.iv1, -1
+ br i1 %tmp16, label %vector.body, label %for.cond.cleanup
+
+ for.cond.cleanup: ; preds = %vector.body, %entry
+ ret void
+ }
+ declare <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>*, i32 immarg, <4 x i1>, <4 x i16>) #1
+ declare void @llvm.masked.store.v4i32.p0v4i32(<4 x i32>, <4 x i32>*, i32 immarg, <4 x i1>) #2
+ declare void @llvm.set.loop.iterations.i32(i32) #3
+ declare i32 @llvm.loop.decrement.reg.i32.i32.i32(i32, i32) #3
+ declare <4 x i1> @llvm.arm.mve.vctp32(i32) #4
+
+...
+---
+name: inloop_vpnot
+alignment: 2
+exposesReturnsTwice: false
+legalized: false
+regBankSelected: false
+selected: false
+failedISel: false
+tracksRegLiveness: true
+hasWinCFI: false
+registers: []
+liveins:
+ - { reg: '$r0', virtual-reg: '' }
+ - { reg: '$r1', virtual-reg: '' }
+ - { reg: '$r2', virtual-reg: '' }
+ - { reg: '$r3', virtual-reg: '' }
+frameInfo:
+ isFrameAddressTaken: false
+ isReturnAddressTaken: false
+ hasStackMap: false
+ hasPatchPoint: false
+ stackSize: 16
+ offsetAdjustment: 0
+ maxAlignment: 4
+ adjustsStack: false
+ hasCalls: false
+ stackProtector: ''
+ maxCallFrameSize: 0
+ cvBytesOfCalleeSavedRegisters: 0
+ hasOpaqueSPAdjustment: false
+ hasVAStart: false
+ hasMustTailInVarArgFunc: false
+ localFrameSize: 0
+ savePoint: ''
+ restorePoint: ''
+fixedStack:
+ - { id: 0, type: default, offset: 4, size: 4, alignment: 4, stack-id: default,
+ isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+ - { id: 1, type: default, offset: 0, size: 4, alignment: 8, stack-id: default,
+ isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+stack:
+ - { id: 0, name: '', type: spill-slot, offset: -4, size: 4, alignment: 4,
+ stack-id: default, callee-saved-register: '$lr', callee-saved-restored: false,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+ - { id: 1, name: '', type: spill-slot, offset: -8, size: 4, alignment: 4,
+ stack-id: default, callee-saved-register: '$r7', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+ - { id: 2, name: '', type: spill-slot, offset: -12, size: 4, alignment: 4,
+ stack-id: default, callee-saved-register: '$r5', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+ - { id: 3, name: '', type: spill-slot, offset: -16, size: 4, alignment: 4,
+ stack-id: default, callee-saved-register: '$r4', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+callSites: []
+constants: []
+machineFunctionInfo: {}
+body: |
+ ; CHECK-LABEL: name: inloop_vpnot
+ ; CHECK: bb.0.entry:
+ ; CHECK: successors: %bb.3(0x30000000), %bb.1(0x50000000)
+ ; CHECK: liveins: $r0, $r1, $r2, $r3, $r4, $r5, $r7, $lr
+ ; CHECK: frame-setup tPUSH 14, $noreg, killed $r4, killed $r5, killed $r7, killed $lr, implicit-def $sp, implicit $sp
+ ; CHECK: frame-setup CFI_INSTRUCTION def_cfa_offset 16
+ ; CHECK: frame-setup CFI_INSTRUCTION offset $lr, -4
+ ; CHECK: frame-setup CFI_INSTRUCTION offset $r7, -8
+ ; CHECK: frame-setup CFI_INSTRUCTION offset $r5, -12
+ ; CHECK: frame-setup CFI_INSTRUCTION offset $r4, -16
+ ; CHECK: renamable $r12 = t2LDRi12 $sp, 20, 14, $noreg :: (load 4 from %fixed-stack.1)
+ ; CHECK: t2CMPri renamable $r12, 0, 14, $noreg, implicit-def $cpsr
+ ; CHECK: tBcc %bb.3, 0, killed $cpsr
+ ; CHECK: bb.1.vector.ph:
+ ; CHECK: successors: %bb.2(0x80000000)
+ ; CHECK: liveins: $r0, $r1, $r2, $r3, $r12
+ ; CHECK: renamable $lr = t2ADDri renamable $r12, 3, 14, $noreg, $noreg
+ ; CHECK: renamable $r4, dead $cpsr = tMOVi8 1, 14, $noreg
+ ; CHECK: renamable $lr = t2BICri killed renamable $lr, 3, 14, $noreg, $noreg
+ ; CHECK: renamable $r5 = tLDRspi $sp, 4, 14, $noreg :: (load 4 from %fixed-stack.0, align 8)
+ ; CHECK: renamable $lr = t2SUBri killed renamable $lr, 4, 14, $noreg, $noreg
+ ; CHECK: renamable $q0 = MVE_VMOVimmi32 0, 0, $noreg, undef renamable $q0
+ ; CHECK: renamable $lr = nuw nsw t2ADDrs killed renamable $r4, killed renamable $lr, 19, 14, $noreg, $noreg
+ ; CHECK: $lr = t2DLS renamable $lr
+ ; CHECK: $r4 = tMOVr killed $lr, 14, $noreg
+ ; CHECK: bb.2.vector.body:
+ ; CHECK: successors: %bb.2(0x7c000000), %bb.3(0x04000000)
+ ; CHECK: liveins: $q0, $r0, $r1, $r2, $r3, $r4, $r5, $r12
+ ; CHECK: renamable $vpr = MVE_VCTP32 renamable $r12, 0, $noreg
+ ; CHECK: MVE_VPST 4, implicit $vpr
+ ; CHECK: renamable $r3, renamable $q1 = MVE_VLDRHS32_post killed renamable $r3, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv17.d, align 2)
+ ; CHECK: renamable $r2, renamable $q2 = MVE_VLDRHS32_post killed renamable $r2, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv1820.c, align 2)
+ ; CHECK: renamable $q1 = nsw MVE_VMULi32 killed renamable $q2, killed renamable $q1, 0, $noreg, undef renamable $q1
+ ; CHECK: MVE_VPST 4, implicit $vpr
+ ; CHECK: renamable $r0, renamable $q2 = MVE_VLDRHS32_post killed renamable $r0, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv17, align 2)
+ ; CHECK: renamable $r1, renamable $q3 = MVE_VLDRHS32_post killed renamable $r1, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv1820, align 2)
+ ; CHECK: $lr = tMOVr $r4, 14, $noreg
+ ; CHECK: renamable $r4, dead $cpsr = nsw tSUBi8 killed $r4, 1, 14, $noreg
+ ; CHECK: renamable $r12 = t2SUBri killed renamable $r12, 4, 14, $noreg, $noreg
+ ; CHECK: MVE_VPST 2, implicit $vpr
+ ; CHECK: renamable $q2 = nsw MVE_VMULi32 killed renamable $q3, killed renamable $q2, 0, $noreg, undef renamable $q2
+ ; CHECK: renamable $q1 = MVE_VADDi32 killed renamable $q2, killed renamable $q1, 0, renamable $vpr, undef renamable $q1
+ ; CHECK: renamable $q0 = MVE_VADDi32 killed renamable $q1, killed renamable $q0, 0, renamable $vpr, undef renamable $q0
+ ; CHECK: renamable $r5 = MVE_VSTRWU32_post renamable $q0, killed renamable $r5, 16, 1, renamable $vpr :: (store 16 into %ir.lsr.cast.e, align 4)
+ ; CHECK: renamable $vpr = MVE_VPNOT renamable $vpr, 0, $noreg
+ ; CHECK: $lr = t2LEUpdate killed renamable $lr, %bb.2
+ ; CHECK: bb.3.for.cond.cleanup:
+ ; CHECK: tPOP_RET 14, $noreg, def $r4, def $r5, def $r7, def $pc
+ bb.0.entry:
+ successors: %bb.3(0x30000000), %bb.1(0x50000000)
+ liveins: $r0, $r1, $r2, $r3, $r4, $r5, $r7, $lr
+
+ frame-setup tPUSH 14, $noreg, killed $r4, killed $r5, killed $r7, killed $lr, implicit-def $sp, implicit $sp
+ frame-setup CFI_INSTRUCTION def_cfa_offset 16
+ frame-setup CFI_INSTRUCTION offset $lr, -4
+ frame-setup CFI_INSTRUCTION offset $r7, -8
+ frame-setup CFI_INSTRUCTION offset $r5, -12
+ frame-setup CFI_INSTRUCTION offset $r4, -16
+ renamable $r12 = t2LDRi12 $sp, 20, 14, $noreg :: (load 4 from %fixed-stack.0)
+ t2CMPri renamable $r12, 0, 14, $noreg, implicit-def $cpsr
+ tBcc %bb.3, 0, killed $cpsr
+
+ bb.1.vector.ph:
+ successors: %bb.2(0x80000000)
+ liveins: $r0, $r1, $r2, $r3, $r12
+
+ renamable $lr = t2ADDri renamable $r12, 3, 14, $noreg, $noreg
+ renamable $r4, dead $cpsr = tMOVi8 1, 14, $noreg
+ renamable $lr = t2BICri killed renamable $lr, 3, 14, $noreg, $noreg
+ renamable $r5 = tLDRspi $sp, 4, 14, $noreg :: (load 4 from %fixed-stack.1, align 8)
+ renamable $lr = t2SUBri killed renamable $lr, 4, 14, $noreg, $noreg
+ renamable $q0 = MVE_VMOVimmi32 0, 0, $noreg, undef renamable $q0
+ renamable $lr = nuw nsw t2ADDrs killed renamable $r4, killed renamable $lr, 19, 14, $noreg, $noreg
+ t2DoLoopStart renamable $lr
+ $r4 = tMOVr killed $lr, 14, $noreg
+
+ bb.2.vector.body:
+ successors: %bb.2(0x7c000000), %bb.3(0x04000000)
+ liveins: $q0, $r0, $r1, $r2, $r3, $r4, $r5, $r12
+
+ renamable $vpr = MVE_VCTP32 renamable $r12, 0, $noreg
+ MVE_VPST 4, implicit $vpr
+ renamable $r3, renamable $q1 = MVE_VLDRHS32_post killed renamable $r3, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv17.d, align 2)
+ renamable $r2, renamable $q2 = MVE_VLDRHS32_post killed renamable $r2, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv1820.c, align 2)
+ renamable $q1 = nsw MVE_VMULi32 killed renamable $q2, killed renamable $q1, 0, $noreg, undef renamable $q1
+ MVE_VPST 4, implicit $vpr
+ renamable $r0, renamable $q2 = MVE_VLDRHS32_post killed renamable $r0, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv17, align 2)
+ renamable $r1, renamable $q3 = MVE_VLDRHS32_post killed renamable $r1, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv1820, align 2)
+ $lr = tMOVr $r4, 14, $noreg
+ renamable $r4, dead $cpsr = nsw tSUBi8 killed $r4, 1, 14, $noreg
+ renamable $r12 = t2SUBri killed renamable $r12, 4, 14, $noreg, $noreg
+ MVE_VPST 2, implicit $vpr
+ renamable $q2 = nsw MVE_VMULi32 killed renamable $q3, killed renamable $q2, 0, $noreg, undef renamable $q2
+ renamable $q1 = MVE_VADDi32 killed renamable $q2, killed renamable $q1, 0, renamable $vpr, undef renamable $q1
+ renamable $q0 = MVE_VADDi32 killed renamable $q1, killed renamable $q0, 0, renamable $vpr, undef renamable $q0
+ renamable $r5 = MVE_VSTRWU32_post renamable $q0, killed renamable $r5, 16, 1, renamable $vpr :: (store 16 into %ir.lsr.cast.e, align 4)
+ renamable $vpr = MVE_VPNOT renamable $vpr, 0, $noreg
+ renamable $lr = t2LoopDec killed renamable $lr, 1
+ t2LoopEnd killed renamable $lr, %bb.2, implicit-def dead $cpsr
+ tB %bb.3, 14, $noreg
+
+ bb.3.for.cond.cleanup:
+ tPOP_RET 14, $noreg, def $r4, def $r5, def $r7, def $pc
+
+...
--- /dev/null
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -mtriple=thumbv8.1m.main -mattr=+mve -run-pass=arm-low-overhead-loops %s -o - --verify-machineinstrs | FileCheck %s
+
+# General test for vpsel exclusion from tail predication
+
+--- |
+ define dso_local i32 @vpsel_after_vpt(i16* nocapture readonly %a, i16* nocapture readonly %b, i16* nocapture readonly %c, i16* nocapture readonly %d, i32 %N) local_unnamed_addr #0 {
+ entry:
+ %cmp9 = icmp eq i32 %N, 0
+ %tmp = add i32 %N, 3
+ %tmp1 = lshr i32 %tmp, 2
+ %tmp2 = shl nuw i32 %tmp1, 2
+ %tmp3 = add i32 %tmp2, -4
+ %tmp4 = lshr i32 %tmp3, 2
+ %tmp5 = add nuw nsw i32 %tmp4, 1
+ br i1 %cmp9, label %for.cond.cleanup, label %vector.ph
+
+ vector.ph: ; preds = %entry
+ call void @llvm.set.loop.iterations.i32(i32 %tmp5)
+ br label %vector.body
+
+ vector.body: ; preds = %vector.body, %vector.ph
+ %lsr.iv1 = phi i32 [ %lsr.iv.next, %vector.body ], [ %tmp5, %vector.ph ]
+ %lsr.iv.d = phi i16* [ %scevgep.d, %vector.body ], [ %d, %vector.ph ]
+ %lsr.iv.c = phi i16* [ %scevgep.c, %vector.body ], [ %c, %vector.ph ]
+ %lsr.iv18 = phi i16* [ %scevgep19, %vector.body ], [ %b, %vector.ph ]
+ %lsr.iv = phi i16* [ %scevgep, %vector.body ], [ %a, %vector.ph ]
+ %vec.phi = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %tmp14, %vector.body ]
+ %tmp7 = phi i32 [ %N, %vector.ph ], [ %tmp9, %vector.body ]
+ %lsr.iv17 = bitcast i16* %lsr.iv to <4 x i16>*
+ %lsr.iv1820 = bitcast i16* %lsr.iv18 to <4 x i16>*
+ %lsr.iv1820.c = bitcast i16* %lsr.iv.c to <4 x i16>*
+ %lsr.iv17.d = bitcast i16* %lsr.iv.d to <4 x i16>*
+ %tmp8 = call <4 x i1> @llvm.arm.mve.vctp32(i32 %tmp7)
+ %tmp9 = sub i32 %tmp7, 4
+ %wide.masked.load = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv17, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
+ %tmp10 = sext <4 x i16> %wide.masked.load to <4 x i32>
+ %wide.masked.load14 = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv1820, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
+ %tmp11 = sext <4 x i16> %wide.masked.load14 to <4 x i32>
+ %wide.masked.load.c = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv1820.c, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
+ %sext.load.c = sext <4 x i16> %wide.masked.load.c to <4 x i32>
+ %wide.masked.load.d = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv17.d, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
+ %sext.load.d = sext <4 x i16> %wide.masked.load.d to <4 x i32>
+ %tmp12 = mul nsw <4 x i32> %tmp11, %tmp10
+ %mul.2 = mul nsw <4 x i32> %sext.load.c, %sext.load.d
+ %tmp13 = add <4 x i32> %tmp12, %mul.2
+ %acc = add <4 x i32> %tmp13, %vec.phi
+ %tmp14 = select <4 x i1> %tmp8, <4 x i32> %acc, <4 x i32> %vec.phi
+ %scevgep = getelementptr i16, i16* %lsr.iv, i32 4
+ %scevgep19 = getelementptr i16, i16* %lsr.iv18, i32 4
+ %scevgep.c = getelementptr i16, i16* %lsr.iv.c, i32 4
+ %scevgep.d = getelementptr i16, i16* %lsr.iv.d, i32 4
+ %tmp15 = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %lsr.iv1, i32 1)
+ %tmp16 = icmp ne i32 %tmp15, 0
+ %lsr.iv.next = add nsw i32 %lsr.iv1, -1
+ br i1 %tmp16, label %vector.body, label %middle.block
+
+ middle.block: ; preds = %vector.body
+ %tmp17 = call i32 @llvm.experimental.vector.reduce.add.v4i32(<4 x i32> %tmp14)
+ br label %for.cond.cleanup
+
+ for.cond.cleanup: ; preds = %middle.block, %entry
+ %res.0.lcssa = phi i32 [ 0, %entry ], [ %tmp17, %middle.block ]
+ ret i32 %res.0.lcssa
+ }
+ declare <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>*, i32 immarg, <4 x i1>, <4 x i16>) #1
+ declare i32 @llvm.experimental.vector.reduce.add.v4i32(<4 x i32>) #2
+ declare void @llvm.set.loop.iterations.i32(i32) #3
+ declare i32 @llvm.loop.decrement.reg.i32.i32.i32(i32, i32) #3
+ declare <4 x i1> @llvm.arm.mve.vctp32(i32) #4
+
+...
+---
+name: vpsel_after_vpt
+alignment: 2
+exposesReturnsTwice: false
+legalized: false
+regBankSelected: false
+selected: false
+failedISel: false
+tracksRegLiveness: true
+hasWinCFI: false
+registers: []
+liveins:
+ - { reg: '$r0', virtual-reg: '' }
+ - { reg: '$r1', virtual-reg: '' }
+ - { reg: '$r2', virtual-reg: '' }
+ - { reg: '$r3', virtual-reg: '' }
+frameInfo:
+ isFrameAddressTaken: false
+ isReturnAddressTaken: false
+ hasStackMap: false
+ hasPatchPoint: false
+ stackSize: 16
+ offsetAdjustment: 0
+ maxAlignment: 4
+ adjustsStack: false
+ hasCalls: false
+ stackProtector: ''
+ maxCallFrameSize: 0
+ cvBytesOfCalleeSavedRegisters: 0
+ hasOpaqueSPAdjustment: false
+ hasVAStart: false
+ hasMustTailInVarArgFunc: false
+ localFrameSize: 0
+ savePoint: ''
+ restorePoint: ''
+fixedStack:
+ - { id: 0, type: default, offset: 0, size: 4, alignment: 8, stack-id: default,
+ isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+stack:
+ - { id: 0, name: '', type: spill-slot, offset: -4, size: 4, alignment: 4,
+ stack-id: default, callee-saved-register: '$lr', callee-saved-restored: false,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+ - { id: 1, name: '', type: spill-slot, offset: -8, size: 4, alignment: 4,
+ stack-id: default, callee-saved-register: '$r7', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+ - { id: 2, name: '', type: spill-slot, offset: -12, size: 4, alignment: 4,
+ stack-id: default, callee-saved-register: '$r5', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+ - { id: 3, name: '', type: spill-slot, offset: -16, size: 4, alignment: 4,
+ stack-id: default, callee-saved-register: '$r4', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+callSites: []
+constants: []
+machineFunctionInfo: {}
+body: |
+ ; CHECK-LABEL: name: vpsel_after_vpt
+ ; CHECK: bb.0.entry:
+ ; CHECK: successors: %bb.4(0x30000000), %bb.1(0x50000000)
+ ; CHECK: liveins: $r0, $r1, $r2, $r3, $r4, $r5, $r7, $lr
+ ; CHECK: frame-setup tPUSH 14, $noreg, killed $r4, killed $r5, killed $r7, killed $lr, implicit-def $sp, implicit $sp
+ ; CHECK: frame-setup CFI_INSTRUCTION def_cfa_offset 16
+ ; CHECK: frame-setup CFI_INSTRUCTION offset $lr, -4
+ ; CHECK: frame-setup CFI_INSTRUCTION offset $r7, -8
+ ; CHECK: frame-setup CFI_INSTRUCTION offset $r5, -12
+ ; CHECK: frame-setup CFI_INSTRUCTION offset $r4, -16
+ ; CHECK: renamable $r12 = t2LDRi12 $sp, 16, 14, $noreg :: (load 4 from %fixed-stack.0, align 8)
+ ; CHECK: t2CMPri renamable $r12, 0, 14, $noreg, implicit-def $cpsr
+ ; CHECK: tBcc %bb.4, 0, killed $cpsr
+ ; CHECK: bb.1.vector.ph:
+ ; CHECK: successors: %bb.2(0x80000000)
+ ; CHECK: liveins: $r0, $r1, $r2, $r3, $r12
+ ; CHECK: renamable $lr = t2ADDri renamable $r12, 3, 14, $noreg, $noreg
+ ; CHECK: renamable $r4, dead $cpsr = tMOVi8 1, 14, $noreg
+ ; CHECK: renamable $lr = t2BICri killed renamable $lr, 3, 14, $noreg, $noreg
+ ; CHECK: renamable $q0 = MVE_VMOVimmi32 0, 0, $noreg, undef renamable $q0
+ ; CHECK: renamable $lr = t2SUBri killed renamable $lr, 4, 14, $noreg, $noreg
+ ; CHECK: renamable $r5 = nuw nsw t2ADDrs killed renamable $r4, killed renamable $lr, 19, 14, $noreg, $noreg
+ ; CHECK: $lr = t2DLS renamable $r5
+ ; CHECK: $r4 = tMOVr killed $r5, 14, $noreg
+ ; CHECK: bb.2.vector.body:
+ ; CHECK: successors: %bb.2(0x7c000000), %bb.3(0x04000000)
+ ; CHECK: liveins: $q0, $r0, $r1, $r2, $r3, $r4, $r12
+ ; CHECK: renamable $vpr = MVE_VCTP32 renamable $r12, 0, $noreg
+ ; CHECK: MVE_VPST 4, implicit $vpr
+ ; CHECK: renamable $r3, renamable $q1 = MVE_VLDRHS32_post killed renamable $r3, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv17.d, align 2)
+ ; CHECK: renamable $r2, renamable $q2 = MVE_VLDRHS32_post killed renamable $r2, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv1820.c, align 2)
+ ; CHECK: renamable $q1 = nsw MVE_VMULi32 killed renamable $q2, killed renamable $q1, 0, $noreg, undef renamable $q1
+ ; CHECK: MVE_VPST 4, implicit $vpr
+ ; CHECK: renamable $r0, renamable $q2 = MVE_VLDRHS32_post killed renamable $r0, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv17, align 2)
+ ; CHECK: renamable $r1, renamable $q3 = MVE_VLDRHS32_post killed renamable $r1, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv1820, align 2)
+ ; CHECK: renamable $q2 = nsw MVE_VMULi32 killed renamable $q3, killed renamable $q2, 0, $noreg, undef renamable $q2
+ ; CHECK: $lr = tMOVr $r4, 14, $noreg
+ ; CHECK: renamable $q1 = MVE_VADDi32 killed renamable $q2, killed renamable $q1, 0, $noreg, undef renamable $q1
+ ; CHECK: renamable $r4, dead $cpsr = nsw tSUBi8 killed $r4, 1, 14, $noreg
+ ; CHECK: renamable $q1 = MVE_VADDi32 killed renamable $q1, renamable $q0, 0, $noreg, undef renamable $q1
+ ; CHECK: renamable $r12 = t2SUBri killed renamable $r12, 4, 14, $noreg, $noreg
+ ; CHECK: renamable $q0 = MVE_VPSEL killed renamable $q1, killed renamable $q0, 0, killed renamable $vpr
+ ; CHECK: $lr = t2LEUpdate killed renamable $lr, %bb.2
+ ; CHECK: bb.3.middle.block:
+ ; CHECK: liveins: $q0
+ ; CHECK: renamable $r0 = MVE_VADDVu32no_acc killed renamable $q0, 0, $noreg
+ ; CHECK: tPOP_RET 14, $noreg, def $r4, def $r5, def $r7, def $pc, implicit killed $r0
+ ; CHECK: bb.4:
+ ; CHECK: renamable $r0, dead $cpsr = tMOVi8 0, 14, $noreg
+ ; CHECK: tPOP_RET 14, $noreg, def $r4, def $r5, def $r7, def $pc, implicit killed $r0
+ bb.0.entry:
+ successors: %bb.4(0x30000000), %bb.1(0x50000000)
+ liveins: $r0, $r1, $r2, $r3, $r4, $r5, $r7, $lr
+
+ frame-setup tPUSH 14, $noreg, killed $r4, killed $r5, killed $r7, killed $lr, implicit-def $sp, implicit $sp
+ frame-setup CFI_INSTRUCTION def_cfa_offset 16
+ frame-setup CFI_INSTRUCTION offset $lr, -4
+ frame-setup CFI_INSTRUCTION offset $r7, -8
+ frame-setup CFI_INSTRUCTION offset $r5, -12
+ frame-setup CFI_INSTRUCTION offset $r4, -16
+ renamable $r12 = t2LDRi12 $sp, 16, 14, $noreg :: (load 4 from %fixed-stack.0, align 8)
+ t2CMPri renamable $r12, 0, 14, $noreg, implicit-def $cpsr
+ tBcc %bb.4, 0, killed $cpsr
+
+ bb.1.vector.ph:
+ successors: %bb.2(0x80000000)
+ liveins: $r0, $r1, $r2, $r3, $r12
+
+ renamable $lr = t2ADDri renamable $r12, 3, 14, $noreg, $noreg
+ renamable $r4, dead $cpsr = tMOVi8 1, 14, $noreg
+ renamable $lr = t2BICri killed renamable $lr, 3, 14, $noreg, $noreg
+ renamable $q0 = MVE_VMOVimmi32 0, 0, $noreg, undef renamable $q0
+ renamable $lr = t2SUBri killed renamable $lr, 4, 14, $noreg, $noreg
+ renamable $r5 = nuw nsw t2ADDrs killed renamable $r4, killed renamable $lr, 19, 14, $noreg, $noreg
+ t2DoLoopStart renamable $r5
+ $r4 = tMOVr killed $r5, 14, $noreg
+
+ bb.2.vector.body:
+ successors: %bb.2(0x7c000000), %bb.3(0x04000000)
+ liveins: $q0, $r0, $r1, $r2, $r3, $r4, $r12
+
+ renamable $vpr = MVE_VCTP32 renamable $r12, 0, $noreg
+ MVE_VPST 4, implicit $vpr
+ renamable $r3, renamable $q1 = MVE_VLDRHS32_post killed renamable $r3, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv17.d, align 2)
+ renamable $r2, renamable $q2 = MVE_VLDRHS32_post killed renamable $r2, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv1820.c, align 2)
+ renamable $q1 = nsw MVE_VMULi32 killed renamable $q2, killed renamable $q1, 0, $noreg, undef renamable $q1
+ MVE_VPST 4, implicit $vpr
+ renamable $r0, renamable $q2 = MVE_VLDRHS32_post killed renamable $r0, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv17, align 2)
+ renamable $r1, renamable $q3 = MVE_VLDRHS32_post killed renamable $r1, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv1820, align 2)
+ renamable $q2 = nsw MVE_VMULi32 killed renamable $q3, killed renamable $q2, 0, $noreg, undef renamable $q2
+ $lr = tMOVr $r4, 14, $noreg
+ renamable $q1 = MVE_VADDi32 killed renamable $q2, killed renamable $q1, 0, $noreg, undef renamable $q1
+ renamable $r4, dead $cpsr = nsw tSUBi8 killed $r4, 1, 14, $noreg
+ renamable $q1 = MVE_VADDi32 killed renamable $q1, renamable $q0, 0, $noreg, undef renamable $q1
+ renamable $r12 = t2SUBri killed renamable $r12, 4, 14, $noreg, $noreg
+ renamable $q0 = MVE_VPSEL killed renamable $q1, killed renamable $q0, 0, killed renamable $vpr
+ renamable $lr = t2LoopDec killed renamable $lr, 1
+ t2LoopEnd killed renamable $lr, %bb.2, implicit-def dead $cpsr
+ tB %bb.3, 14, $noreg
+
+ bb.3.middle.block:
+ liveins: $q0
+
+ renamable $r0 = MVE_VADDVu32no_acc killed renamable $q0, 0, $noreg
+ tPOP_RET 14, $noreg, def $r4, def $r5, def $r7, def $pc, implicit killed $r0
+
+ bb.4:
+ renamable $r0, dead $cpsr = tMOVi8 0, 14, $noreg
+ tPOP_RET 14, $noreg, def $r4, def $r5, def $r7, def $pc, implicit killed $r0
+
+...
--- /dev/null
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -mtriple=thumbv8.1m.main -mattr=+mve -run-pass=arm-low-overhead-loops %s -o - --verify-machineinstrs | FileCheck %s
+
+# Test that, even if vpsels are allowed, that they aren't inserted into a vpt
+# block - which would cause an assert here because of the number of insts in
+# the block.
+
+--- |
+ define dso_local i32 @vpsel_after_vpt(i16* nocapture readonly %a, i16* nocapture readonly %b, i16* nocapture readonly %c, i16* nocapture readonly %d, i32 %N) local_unnamed_addr #0 {
+ entry:
+ %cmp9 = icmp eq i32 %N, 0
+ %tmp = add i32 %N, 3
+ %tmp1 = lshr i32 %tmp, 2
+ %tmp2 = shl nuw i32 %tmp1, 2
+ %tmp3 = add i32 %tmp2, -4
+ %tmp4 = lshr i32 %tmp3, 2
+ %tmp5 = add nuw nsw i32 %tmp4, 1
+ br i1 %cmp9, label %for.cond.cleanup, label %vector.ph
+
+ vector.ph: ; preds = %entry
+ call void @llvm.set.loop.iterations.i32(i32 %tmp5)
+ br label %vector.body
+
+ vector.body: ; preds = %vector.body, %vector.ph
+ %lsr.iv1 = phi i32 [ %lsr.iv.next, %vector.body ], [ %tmp5, %vector.ph ]
+ %lsr.iv.d = phi i16* [ %scevgep.d, %vector.body ], [ %d, %vector.ph ]
+ %lsr.iv.c = phi i16* [ %scevgep.c, %vector.body ], [ %c, %vector.ph ]
+ %lsr.iv18 = phi i16* [ %scevgep19, %vector.body ], [ %b, %vector.ph ]
+ %lsr.iv = phi i16* [ %scevgep, %vector.body ], [ %a, %vector.ph ]
+ %vec.phi = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %tmp14, %vector.body ]
+ %tmp7 = phi i32 [ %N, %vector.ph ], [ %tmp9, %vector.body ]
+ %lsr.iv17 = bitcast i16* %lsr.iv to <4 x i16>*
+ %lsr.iv1820 = bitcast i16* %lsr.iv18 to <4 x i16>*
+ %lsr.iv1820.c = bitcast i16* %lsr.iv.c to <4 x i16>*
+ %lsr.iv17.d = bitcast i16* %lsr.iv.d to <4 x i16>*
+ %tmp8 = call <4 x i1> @llvm.arm.mve.vctp32(i32 %tmp7)
+ %tmp9 = sub i32 %tmp7, 4
+ %wide.masked.load = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv17, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
+ %tmp10 = sext <4 x i16> %wide.masked.load to <4 x i32>
+ %wide.masked.load14 = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv1820, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
+ %tmp11 = sext <4 x i16> %wide.masked.load14 to <4 x i32>
+ %wide.masked.load.c = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv1820.c, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
+ %sext.load.c = sext <4 x i16> %wide.masked.load.c to <4 x i32>
+ %wide.masked.load.d = call <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>* %lsr.iv17.d, i32 2, <4 x i1> %tmp8, <4 x i16> undef)
+ %sext.load.d = sext <4 x i16> %wide.masked.load.d to <4 x i32>
+ %tmp12 = mul nsw <4 x i32> %tmp11, %tmp10
+ %mul.2 = mul nsw <4 x i32> %sext.load.c, %sext.load.d
+ %tmp13 = add <4 x i32> %tmp12, %mul.2
+ %acc = add <4 x i32> %tmp13, %vec.phi
+ %tmp14 = select <4 x i1> %tmp8, <4 x i32> %acc, <4 x i32> %vec.phi
+ %scevgep = getelementptr i16, i16* %lsr.iv, i32 4
+ %scevgep19 = getelementptr i16, i16* %lsr.iv18, i32 4
+ %scevgep.c = getelementptr i16, i16* %lsr.iv.c, i32 4
+ %scevgep.d = getelementptr i16, i16* %lsr.iv.d, i32 4
+ %tmp15 = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %lsr.iv1, i32 1)
+ %tmp16 = icmp ne i32 %tmp15, 0
+ %lsr.iv.next = add nsw i32 %lsr.iv1, -1
+ br i1 %tmp16, label %vector.body, label %middle.block
+
+ middle.block: ; preds = %vector.body
+ %tmp17 = call i32 @llvm.experimental.vector.reduce.add.v4i32(<4 x i32> %tmp14)
+ br label %for.cond.cleanup
+
+ for.cond.cleanup: ; preds = %middle.block, %entry
+ %res.0.lcssa = phi i32 [ 0, %entry ], [ %tmp17, %middle.block ]
+ ret i32 %res.0.lcssa
+ }
+ declare <4 x i16> @llvm.masked.load.v4i16.p0v4i16(<4 x i16>*, i32 immarg, <4 x i1>, <4 x i16>) #1
+ declare i32 @llvm.experimental.vector.reduce.add.v4i32(<4 x i32>) #2
+ declare void @llvm.set.loop.iterations.i32(i32) #3
+ declare i32 @llvm.loop.decrement.reg.i32.i32.i32(i32, i32) #3
+ declare <4 x i1> @llvm.arm.mve.vctp32(i32) #4
+
+...
+---
+name: vpsel_after_vpt
+alignment: 2
+exposesReturnsTwice: false
+legalized: false
+regBankSelected: false
+selected: false
+failedISel: false
+tracksRegLiveness: true
+hasWinCFI: false
+registers: []
+liveins:
+ - { reg: '$r0', virtual-reg: '' }
+ - { reg: '$r1', virtual-reg: '' }
+ - { reg: '$r2', virtual-reg: '' }
+ - { reg: '$r3', virtual-reg: '' }
+frameInfo:
+ isFrameAddressTaken: false
+ isReturnAddressTaken: false
+ hasStackMap: false
+ hasPatchPoint: false
+ stackSize: 16
+ offsetAdjustment: 0
+ maxAlignment: 4
+ adjustsStack: false
+ hasCalls: false
+ stackProtector: ''
+ maxCallFrameSize: 0
+ cvBytesOfCalleeSavedRegisters: 0
+ hasOpaqueSPAdjustment: false
+ hasVAStart: false
+ hasMustTailInVarArgFunc: false
+ localFrameSize: 0
+ savePoint: ''
+ restorePoint: ''
+fixedStack:
+ - { id: 0, type: default, offset: 0, size: 4, alignment: 8, stack-id: default,
+ isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+stack:
+ - { id: 0, name: '', type: spill-slot, offset: -4, size: 4, alignment: 4,
+ stack-id: default, callee-saved-register: '$lr', callee-saved-restored: false,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+ - { id: 1, name: '', type: spill-slot, offset: -8, size: 4, alignment: 4,
+ stack-id: default, callee-saved-register: '$r7', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+ - { id: 2, name: '', type: spill-slot, offset: -12, size: 4, alignment: 4,
+ stack-id: default, callee-saved-register: '$r5', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+ - { id: 3, name: '', type: spill-slot, offset: -16, size: 4, alignment: 4,
+ stack-id: default, callee-saved-register: '$r4', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+callSites: []
+constants: []
+machineFunctionInfo: {}
+body: |
+ ; CHECK-LABEL: name: vpsel_after_vpt
+ ; CHECK: bb.0.entry:
+ ; CHECK: successors: %bb.4(0x30000000), %bb.1(0x50000000)
+ ; CHECK: liveins: $r0, $r1, $r2, $r3, $r4, $r5, $r7, $lr
+ ; CHECK: frame-setup tPUSH 14, $noreg, killed $r4, killed $r5, killed $r7, killed $lr, implicit-def $sp, implicit $sp
+ ; CHECK: frame-setup CFI_INSTRUCTION def_cfa_offset 16
+ ; CHECK: frame-setup CFI_INSTRUCTION offset $lr, -4
+ ; CHECK: frame-setup CFI_INSTRUCTION offset $r7, -8
+ ; CHECK: frame-setup CFI_INSTRUCTION offset $r5, -12
+ ; CHECK: frame-setup CFI_INSTRUCTION offset $r4, -16
+ ; CHECK: renamable $r12 = t2LDRi12 $sp, 16, 14, $noreg :: (load 4 from %fixed-stack.0, align 8)
+ ; CHECK: t2CMPri renamable $r12, 0, 14, $noreg, implicit-def $cpsr
+ ; CHECK: tBcc %bb.4, 0, killed $cpsr
+ ; CHECK: bb.1.vector.ph:
+ ; CHECK: successors: %bb.2(0x80000000)
+ ; CHECK: liveins: $r0, $r1, $r2, $r3, $r12
+ ; CHECK: renamable $lr = t2ADDri renamable $r12, 3, 14, $noreg, $noreg
+ ; CHECK: renamable $r4, dead $cpsr = tMOVi8 1, 14, $noreg
+ ; CHECK: renamable $lr = t2BICri killed renamable $lr, 3, 14, $noreg, $noreg
+ ; CHECK: renamable $q0 = MVE_VMOVimmi32 0, 0, $noreg, undef renamable $q0
+ ; CHECK: renamable $lr = t2SUBri killed renamable $lr, 4, 14, $noreg, $noreg
+ ; CHECK: renamable $r5 = nuw nsw t2ADDrs killed renamable $r4, killed renamable $lr, 19, 14, $noreg, $noreg
+ ; CHECK: $lr = t2DLS renamable $r5
+ ; CHECK: $r4 = tMOVr killed $r5, 14, $noreg
+ ; CHECK: bb.2.vector.body:
+ ; CHECK: successors: %bb.2(0x7c000000), %bb.3(0x04000000)
+ ; CHECK: liveins: $q0, $r0, $r1, $r2, $r3, $r4, $r12
+ ; CHECK: renamable $vpr = MVE_VCTP32 renamable $r12, 0, $noreg
+ ; CHECK: MVE_VPST 2, implicit $vpr
+ ; CHECK: renamable $r3, renamable $q1 = MVE_VLDRHS32_post killed renamable $r3, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv17.d, align 2)
+ ; CHECK: renamable $r2, renamable $q2 = MVE_VLDRHS32_post killed renamable $r2, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv1820.c, align 2)
+ ; CHECK: renamable $r1, renamable $q3 = MVE_VLDRHS32_post killed renamable $r1, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv1820, align 2)
+ ; CHECK: renamable $r0, renamable $q4 = MVE_VLDRHS32_post killed renamable $r0, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv17, align 2)
+ ; CHECK: renamable $q1 = nsw MVE_VMULi32 killed renamable $q2, killed renamable $q1, 0, $noreg, undef renamable $q1
+ ; CHECK: renamable $q2 = nsw MVE_VMULi32 killed renamable $q3, killed renamable $q4, 0, $noreg, undef renamable $q2
+ ; CHECK: $lr = tMOVr $r4, 14, $noreg
+ ; CHECK: renamable $q1 = MVE_VADDi32 killed renamable $q2, killed renamable $q1, 0, $noreg, undef renamable $q1
+ ; CHECK: renamable $r4, dead $cpsr = nsw tSUBi8 killed $r4, 1, 14, $noreg
+ ; CHECK: renamable $q1 = MVE_VADDi32 killed renamable $q1, renamable $q0, 0, $noreg, undef renamable $q1
+ ; CHECK: renamable $r12 = t2SUBri killed renamable $r12, 4, 14, $noreg, $noreg
+ ; CHECK: renamable $q0 = MVE_VPSEL killed renamable $q1, killed renamable $q0, 0, killed renamable $vpr
+ ; CHECK: $lr = t2LEUpdate killed renamable $lr, %bb.2
+ ; CHECK: bb.3.middle.block:
+ ; CHECK: liveins: $q0
+ ; CHECK: renamable $r0 = MVE_VADDVu32no_acc killed renamable $q0, 0, $noreg
+ ; CHECK: tPOP_RET 14, $noreg, def $r4, def $r5, def $r7, def $pc, implicit killed $r0
+ ; CHECK: bb.4:
+ ; CHECK: renamable $r0, dead $cpsr = tMOVi8 0, 14, $noreg
+ ; CHECK: tPOP_RET 14, $noreg, def $r4, def $r5, def $r7, def $pc, implicit killed $r0
+ bb.0.entry:
+ successors: %bb.4(0x30000000), %bb.1(0x50000000)
+ liveins: $r0, $r1, $r2, $r3, $r4, $r5, $r7, $lr
+
+ frame-setup tPUSH 14, $noreg, killed $r4, killed $r5, killed $r7, killed $lr, implicit-def $sp, implicit $sp
+ frame-setup CFI_INSTRUCTION def_cfa_offset 16
+ frame-setup CFI_INSTRUCTION offset $lr, -4
+ frame-setup CFI_INSTRUCTION offset $r7, -8
+ frame-setup CFI_INSTRUCTION offset $r5, -12
+ frame-setup CFI_INSTRUCTION offset $r4, -16
+ renamable $r12 = t2LDRi12 $sp, 16, 14, $noreg :: (load 4 from %fixed-stack.0, align 8)
+ t2CMPri renamable $r12, 0, 14, $noreg, implicit-def $cpsr
+ tBcc %bb.4, 0, killed $cpsr
+
+ bb.1.vector.ph:
+ successors: %bb.2(0x80000000)
+ liveins: $r0, $r1, $r2, $r3, $r12
+
+ renamable $lr = t2ADDri renamable $r12, 3, 14, $noreg, $noreg
+ renamable $r4, dead $cpsr = tMOVi8 1, 14, $noreg
+ renamable $lr = t2BICri killed renamable $lr, 3, 14, $noreg, $noreg
+ renamable $q0 = MVE_VMOVimmi32 0, 0, $noreg, undef renamable $q0
+ renamable $lr = t2SUBri killed renamable $lr, 4, 14, $noreg, $noreg
+ renamable $r5 = nuw nsw t2ADDrs killed renamable $r4, killed renamable $lr, 19, 14, $noreg, $noreg
+ t2DoLoopStart renamable $r5
+ $r4 = tMOVr killed $r5, 14, $noreg
+
+ bb.2.vector.body:
+ successors: %bb.2(0x7c000000), %bb.3(0x04000000)
+ liveins: $q0, $r0, $r1, $r2, $r3, $r4, $r12
+
+ renamable $vpr = MVE_VCTP32 renamable $r12, 0, $noreg
+ MVE_VPST 2, implicit $vpr
+ renamable $r3, renamable $q1 = MVE_VLDRHS32_post killed renamable $r3, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv17.d, align 2)
+ renamable $r2, renamable $q2 = MVE_VLDRHS32_post killed renamable $r2, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv1820.c, align 2)
+ renamable $r1, renamable $q3 = MVE_VLDRHS32_post killed renamable $r1, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv1820, align 2)
+ renamable $r0, renamable $q4 = MVE_VLDRHS32_post killed renamable $r0, 8, 1, renamable $vpr :: (load 8 from %ir.lsr.iv17, align 2)
+ renamable $q1 = nsw MVE_VMULi32 killed renamable $q2, killed renamable $q1, 0, $noreg, undef renamable $q1
+ renamable $q2 = nsw MVE_VMULi32 killed renamable $q3, killed renamable $q4, 0, $noreg, undef renamable $q2
+ $lr = tMOVr $r4, 14, $noreg
+ renamable $q1 = MVE_VADDi32 killed renamable $q2, killed renamable $q1, 0, $noreg, undef renamable $q1
+ renamable $r4, dead $cpsr = nsw tSUBi8 killed $r4, 1, 14, $noreg
+ renamable $q1 = MVE_VADDi32 killed renamable $q1, renamable $q0, 0, $noreg, undef renamable $q1
+ renamable $r12 = t2SUBri killed renamable $r12, 4, 14, $noreg, $noreg
+ renamable $q0 = MVE_VPSEL killed renamable $q1, killed renamable $q0, 0, killed renamable $vpr
+ renamable $lr = t2LoopDec killed renamable $lr, 1
+ t2LoopEnd killed renamable $lr, %bb.2, implicit-def dead $cpsr
+ tB %bb.3, 14, $noreg
+
+ bb.3.middle.block:
+ liveins: $q0
+
+ renamable $r0 = MVE_VADDVu32no_acc killed renamable $q0, 0, $noreg
+ tPOP_RET 14, $noreg, def $r4, def $r5, def $r7, def $pc, implicit killed $r0
+
+ bb.4:
+ renamable $r0, dead $cpsr = tMOVi8 0, 14, $noreg
+ tPOP_RET 14, $noreg, def $r4, def $r5, def $r7, def $pc, implicit killed $r0
+
+...
projects / platform / upstream / llvm.git / commitdiff