StackSlotIdxes.insert({{Size, Offs}, Idx});
}
+ // There may also be strange register class sizes (think x86 fp80s).
+ for (const TargetRegisterClass *RC : TRI.regclasses()) {
+ unsigned Size = TRI.getRegSizeInBits(*RC);
+
+ // We might see special reserved values as sizes, and classes for other
+ // stuff the machine tries to model. If it's more than 512 bits, then it
+ // is very unlikely to be a register than can be spilt.
+ if (Size > 512)
+ continue;
+
+ unsigned Idx = StackSlotIdxes.size();
+ StackSlotIdxes.insert({{Size, 0}, Idx});
+ }
+
for (auto &Idx : StackSlotIdxes)
StackIdxesToPos[Idx.second] = Idx.first;
if (!SpillNo)
return EmitBadPHI();
- // Problem: what value should we extract from the stack? LLVM does not
- // record what size the last store to the slot was, and it would become
- // sketchy after stack slot colouring anyway. Take a look at what values
- // are stored on the stack, and pick the largest one that wasn't def'd
- // by a spill (i.e., the value most likely to have been def'd in a register
- // and then spilt.
- std::array<unsigned, 4> CandidateSizes = {64, 32, 16, 8};
- Optional<ValueIDNum> Result = None;
- Optional<LocIdx> SpillLoc = None;
- for (unsigned CS : CandidateSizes) {
- unsigned SpillID = MTracker->getLocID(*SpillNo, {CS, 0});
- SpillLoc = MTracker->getSpillMLoc(SpillID);
- ValueIDNum Val = MTracker->readMLoc(*SpillLoc);
- // If this value was defined in it's own position, then it was probably
- // an aliasing index of a small value that was spilt.
- if (Val.getLoc() != SpillLoc->asU64()) {
- Result = Val;
- break;
- }
- }
+ // Any stack location DBG_PHI should have an associate bit-size.
+ assert(MI.getNumOperands() == 3 && "Stack DBG_PHI with no size?");
+ unsigned slotBitSize = MI.getOperand(2).getImm();
- // If we didn't find anything, we're probably looking at a PHI, or a memory
- // store folded into an instruction. FIXME: Take a guess that's it's 64
- // bits. This isn't ideal, but tracking the size that the spill is
- // "supposed" to be is more complex, and benefits a small number of
- // locations.
- if (!Result) {
- unsigned SpillID = MTracker->getLocID(*SpillNo, {64, 0});
- SpillLoc = MTracker->getSpillMLoc(SpillID);
- Result = MTracker->readMLoc(*SpillLoc);
- }
+ unsigned SpillID = MTracker->getLocID(*SpillNo, {slotBitSize, 0});
+ LocIdx SpillLoc = MTracker->getSpillMLoc(SpillID);
+ ValueIDNum Result = MTracker->readMLoc(SpillLoc);
// Record this DBG_PHI for later analysis.
- auto DbgPHI =
- DebugPHIRecord({InstrNum, MI.getParent(), *Result, *SpillLoc});
+ auto DbgPHI = DebugPHIRecord({InstrNum, MI.getParent(), Result, SpillLoc});
DebugPHINumToValue.push_back(DbgPHI);
} else {
// Else: if the operand is neither a legal register or a stack slot, then
const TargetRegisterClass *TRC = MRI.getRegClass(Reg);
unsigned SpillSize, SpillOffset;
- // Test whether this location is legal with the given subreg.
+ unsigned regSizeInBits = TRI->getRegSizeInBits(*TRC);
+ if (SubReg)
+ regSizeInBits = TRI->getSubRegIdxSize(SubReg);
+
+ // Test whether this location is legal with the given subreg. If the
+ // subregister has a nonzero offset, drop this location, it's too complex
+ // to describe. (TODO: future work).
bool Success =
TII->getStackSlotRange(TRC, SubReg, SpillSize, SpillOffset, *MF);
- if (Success) {
+ if (Success && SpillOffset == 0) {
auto Builder = BuildMI(*OrigMBB, OrigMBB->begin(), DebugLoc(),
TII->get(TargetOpcode::DBG_PHI));
Builder.addFrameIndex(VRM->getStackSlot(Reg));
Builder.addImm(InstNum);
+ // Record how large the original value is. The stack slot might be
+ // merged and altered during optimisation, but we will want to know how
+ // large the value is, at this DBG_PHI.
+ Builder.addImm(regSizeInBits);
+ }
+
+ LLVM_DEBUG(
+ if (SpillOffset != 0) {
+ dbgs() << "DBG_PHI for Vreg " << Reg << " subreg " << SubReg <<
+ " has nonzero offset\n";
}
+ );
}
// If there was no mapping for a value ID, it's optimized out. Create no
// DBG_PHI, and any variables using this value will become optimized out.
--- /dev/null
+# RUN: llc %s -o - -mtriple=x86_64-unknown-unknown \
+# RUN: -experimental-debug-variable-locations -run-pass=livedebugvalues\
+# RUN: | FileCheck %s
+#
+# Test that a DBG_INSTR_REF that refers to a DBG_PHI, will be translated into a
+# DBG_VALUE of the value read at that DBG_PHI -- in this test, when the value
+# is on the stack.
+#
+--- |
+ target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+ target triple = "x86_64-unknown-linux-gnu"
+
+ define dso_local i32 @foo(i64 %bar, i64 %baz) !dbg !7 {
+ ret i32 0
+ }
+
+ declare dso_local void @ext(i64)
+
+ declare dso_local i64 @getlong()
+
+ !llvm.dbg.cu = !{!0}
+ !llvm.module.flags = !{!3, !4, !5}
+ !llvm.ident = !{!6}
+
+ !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
+ !1 = !DIFile(filename: "test.c", directory: "/tmp/out.c")
+ !2 = !{}
+ !3 = !{i32 7, !"Dwarf Version", i32 4}
+ !4 = !{i32 2, !"Debug Info Version", i32 3}
+ !5 = !{i32 1, !"wchar_size", i32 4}
+ !6 = !{!""}
+ !7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
+ !8 = !DISubroutineType(types: !9)
+ !9 = !{!10, !11, !11}
+ !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+ !11 = !DIBasicType(name: "long int", size: 64, encoding: DW_ATE_signed)
+ !12 = !DILocalVariable(name: "bar", arg: 1, scope: !7, file: !1, line: 3, type: !11)
+ !13 = !DILocation(line: 0, scope: !7)
+ !14 = !DILocalVariable(name: "baz", arg: 2, scope: !7, file: !1, line: 3, type: !11)
+ !19 = distinct !DILexicalBlock(scope: !7, file: !1, line: 8, column: 7)
+ !26 = !DILocation(line: 13, column: 3, scope: !7)
+
+...
+---
+name: foo
+alignment: 16
+tracksRegLiveness: true
+liveins:
+ - { reg: '$rdi' }
+ - { reg: '$rsi' }
+frameInfo:
+ stackSize: 24
+ offsetAdjustment: -24
+ maxAlignment: 1
+ adjustsStack: true
+ hasCalls: true
+ maxCallFrameSize: 0
+ cvBytesOfCalleeSavedRegisters: 16
+fixedStack:
+ - { id: 0, type: spill-slot, offset: -24, size: 8, alignment: 8, callee-saved-register: '$rbx' }
+ - { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 16, callee-saved-register: '$r14' }
+machineFunctionInfo: {}
+stack:
+ - { id: 0, name: '', type: spill-slot, offset: 0, size: 8, alignment: 8,
+ stack-id: default, callee-saved-register: '', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+
+body: |
+ bb.0:
+ liveins: $rdi, $rsi, $r14, $rbx
+ ; CHECK-LABEL: bb.0:
+
+ $r14 = MOV64rr $rsi
+ $rbx = MOV64rr $rdi
+ $rax = MOV64ri 0
+ MOV64mr $rsp, 1, $noreg, 16, $noreg, $rax :: (store 8 into %stack.0)
+ $rax = MOV64ri 0
+
+ ;; A DBG_PHI of the stack should resolve to the stack location.
+ DBG_PHI %stack.0, 1, 64
+
+ ;; Reload value, clobber stack location.
+ $rcx = MOV64rm $rsp, 1, $noreg, 8, $noreg :: (load 8 from %stack.0)
+ MOV64mr $rsp, 1, $noreg, 16, $noreg, $rax :: (store 8 into %stack.0)
+
+ ;; This should resolve to the loaded register.
+ DBG_INSTR_REF 1, 0, !12, !DIExpression(), debug-location !13
+ ; CHECK: DBG_INSTR_REF 1, 0,
+ ; CHECK-NEXT: DBG_VALUE $rcx
+
+ ;; And if we say it's a smaller size, we should be able to pick out smaller
+ ;; subregisters within the stack slot.
+ DBG_PHI %stack.0, 2, 32
+ $rax = MOV64ri 0
+ $rcx = MOV64rm $rsp, 1, $noreg, 8, $noreg :: (load 8 from %stack.0)
+ MOV64mr $rsp, 1, $noreg, 16, $noreg, $rax :: (store 8 into %stack.0)
+
+ ;; This should pick out the 32 bit value.
+ DBG_INSTR_REF 2, 0, !12, !DIExpression(), debug-location !13
+ ; CHECK: DBG_INSTR_REF 2, 0,
+ ; CHECK-NEXT: DBG_VALUE $ecx
+
+ ;; Try all the other subregs.
+ DBG_PHI %stack.0, 3, 16
+ $rax = MOV64ri 0
+ $rcx = MOV64rm $rsp, 1, $noreg, 8, $noreg :: (load 8 from %stack.0)
+ MOV64mr $rsp, 1, $noreg, 16, $noreg, $rax :: (store 8 into %stack.0)
+
+ DBG_INSTR_REF 3, 0, !12, !DIExpression(), debug-location !13
+ ; CHECK: DBG_INSTR_REF 3, 0,
+ ; CHECK-NEXT: DBG_VALUE $cx
+
+ DBG_PHI %stack.0, 4, 8
+ $rax = MOV64ri 0
+ $rcx = MOV64rm $rsp, 1, $noreg, 8, $noreg :: (load 8 from %stack.0)
+ MOV64mr $rsp, 1, $noreg, 16, $noreg, $rax :: (store 8 into %stack.0)
+
+ DBG_INSTR_REF 4, 0, !12, !DIExpression(), debug-location !13
+ ; CHECK: DBG_INSTR_REF 4, 0,
+ ; CHECK-NEXT: DBG_VALUE $cl
+
+ ;; We can't, at this time, describe subregister fields with nonzero offset.
+ ;; It's easily achieved by attaching more data to stack DBG_PHIs, but it's
+ ;; not clear that LLVM will ever merge registers to generate such locations.
+
+ RET64 implicit $eax, debug-location !26
+
+...
--- /dev/null
+# RUN: llc %s -o - -mtriple=x86_64-unknown-unknown \
+# RUN: -experimental-debug-variable-locations \
+# RUN: -start-before=phi-node-elimination -stop-after=virtregrewriter \
+# RUN: | FileCheck %s
+#
+# Like phi-through-regalloc.mir, pass a PHI node into register allocation, and
+# test that it correctly comes out, in a stack slot. In this test the desired
+# value is a 16 bit copy of an argument, and the PHI register class is 16 bits.
+# It's subsequently coalesced into a larger vreg, which is then spilt as a 32
+# bit value.
+# Test that the coalescing happens (32 bits stored and loaded), but that we
+# record in the relevant DBG_PHI that the original value was 16 bits in size.
+# This avoids later ambiguity about how large the value on the stack is.
+
+--- |
+ ; ModuleID = 'promoted.ll'
+ source_filename = "test.c"
+ target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+ target triple = "x86_64-unknown-linux-gnu"
+
+ define dso_local i32 @foo(i32 %bar, i32 %baz) !dbg !7 {
+ entry:
+ ret i32 0, !dbg !19
+ }
+
+ declare dso_local i32 @ext(i32)
+
+ ; Function Attrs: nounwind readnone speculatable willreturn
+ declare void @llvm.dbg.value(metadata, metadata, metadata)
+
+ !llvm.dbg.cu = !{!0}
+ !llvm.module.flags = !{!3, !4, !5}
+ !llvm.ident = !{!6}
+
+ !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
+ !1 = !DIFile(filename: "test.c", directory: ".")
+ !2 = !{}
+ !3 = !{i32 7, !"Dwarf Version", i32 4}
+ !4 = !{i32 2, !"Debug Info Version", i32 3}
+ !5 = !{i32 1, !"wchar_size", i32 4}
+ !6 = !{!"."}
+ !7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 2, type: !8, scopeLine: 2, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
+ !8 = !DISubroutineType(types: !9)
+ !9 = !{!10, !10, !10}
+ !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+ !11 = !DILocalVariable(name: "bar", arg: 1, scope: !7, file: !1, line: 2, type: !10)
+ !12 = !DILocation(line: 0, scope: !7)
+ !13 = !DILocalVariable(name: "baz", arg: 2, scope: !7, file: !1, line: 2, type: !10)
+ !14 = !DILocalVariable(name: "either", scope: !7, file: !1, line: 3, type: !10)
+ !15 = !DILocation(line: 4, column: 7, scope: !16)
+ !16 = distinct !DILexicalBlock(scope: !7, file: !1, line: 4, column: 7)
+ !17 = !DILocation(line: 4, column: 7, scope: !7)
+ !18 = !DILocation(line: 0, scope: !16)
+ !19 = !DILocation(line: 9, column: 3, scope: !7)
+
+...
+---
+name: foo
+alignment: 16
+tracksRegLiveness: true
+registers:
+ - { id: 0, class: gr16 }
+ - { id: 1, class: gr32 }
+ - { id: 2, class: gr32 }
+ - { id: 3, class: gr32 }
+ - { id: 4, class: gr32 }
+liveins:
+ - { reg: '$edi', virtual-reg: '%1' }
+ - { reg: '$esi', virtual-reg: '%2' }
+frameInfo:
+ maxAlignment: 1
+ hasCalls: true
+machineFunctionInfo: {}
+body: |
+ ; CHECK-LABEL: bb.0:
+ ; CHECK: MOV32mr %stack.0, 1, $noreg, 0, $noreg, $edi
+ bb.0:
+ successors: %bb.2(0x50000000), %bb.1(0x30000000)
+ liveins: $edi, $esi
+
+ DBG_VALUE $edi, $noreg, !11, !DIExpression(), debug-location !12
+ DBG_VALUE $esi, $noreg, !13, !DIExpression(), debug-location !12
+ %2:gr32 = COPY killed $esi
+ %1:gr32 = COPY killed $edi
+ %5:gr16 = COPY %1.sub_16bit
+ %6:gr16 = COPY %1.sub_16bit
+ ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !15
+ %3:gr32 = MOV32r0 implicit-def dead $eflags
+ $edi = COPY killed %3, debug-location !15
+ CALL64pcrel32 @ext, csr_64, implicit $rsp, implicit $ssp, implicit killed $edi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !15
+ ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !15
+ %4:gr32 = COPY killed $eax, debug-location !15
+ %10:gr32 = MOV32ri 0
+ %11:gr32 = MOV32ri 1
+ %12:gr32 = MOV32ri 2
+ %13:gr32 = MOV32ri 3
+ %14:gr32 = MOV32ri 4
+ %15:gr32 = MOV32ri 5
+ %16:gr32 = MOV32ri 6
+ %17:gr32 = MOV32ri 7
+ %18:gr32 = MOV32ri 8
+ %19:gr32 = MOV32ri 9
+ %20:gr32 = MOV32ri 10
+ %21:gr32 = MOV32ri 11
+ %22:gr32 = MOV32ri 12
+ %23:gr32 = MOV32ri 13
+ %24:gr32 = MOV32ri 14
+ TEST32rr killed %4, %4, implicit-def $eflags, debug-location !15
+ JCC_1 %bb.2, 5, implicit killed $eflags, debug-location !17
+ JMP_1 %bb.1, debug-location !17
+
+ bb.1:
+ %30:gr32 = MOV32ri 0
+ %31:gr32 = MOV32ri 1
+ %32:gr32 = MOV32ri 2
+ %33:gr32 = MOV32ri 3
+ %34:gr32 = MOV32ri 4
+ %35:gr32 = MOV32ri 5
+ %36:gr32 = MOV32ri 6
+ %37:gr32 = MOV32ri 7
+ %38:gr32 = MOV32ri 8
+ %39:gr32 = MOV32ri 9
+ %40:gr32 = MOV32ri 10
+ %41:gr32 = MOV32ri 11
+ %42:gr32 = MOV32ri 12
+ %43:gr32 = MOV32ri 13
+ %44:gr32 = MOV32ri 14
+
+ ; CHECK-LABEL: bb.2:
+ bb.2:
+ %0:gr16 = PHI %5, %bb.0, %6, %bb.1, debug-instr-number 1, debug-location !18
+ %50:gr32 = PHI %10, %bb.0, %30, %bb.1, debug-location !18
+ %51:gr32 = PHI %11, %bb.0, %31, %bb.1, debug-location !18
+ %52:gr32 = PHI %12, %bb.0, %32, %bb.1, debug-location !18
+ %53:gr32 = PHI %13, %bb.0, %33, %bb.1, debug-location !18
+ %54:gr32 = PHI %14, %bb.0, %34, %bb.1, debug-location !18
+ %55:gr32 = PHI %15, %bb.0, %35, %bb.1, debug-location !18
+ %56:gr32 = PHI %16, %bb.0, %36, %bb.1, debug-location !18
+ %57:gr32 = PHI %17, %bb.0, %37, %bb.1, debug-location !18
+ %58:gr32 = PHI %18, %bb.0, %38, %bb.1, debug-location !18
+ %59:gr32 = PHI %19, %bb.0, %39, %bb.1, debug-location !18
+ %60:gr32 = PHI %20, %bb.0, %40, %bb.1, debug-location !18
+ %61:gr32 = PHI %21, %bb.0, %41, %bb.1, debug-location !18
+ %62:gr32 = PHI %22, %bb.0, %42, %bb.1, debug-location !18
+ %63:gr32 = PHI %23, %bb.0, %43, %bb.1, debug-location !18
+ %64:gr32 = PHI %24, %bb.0, %44, %bb.1, debug-location !18
+
+ INLINEASM &"", 1, 12, %50, 12, %51, 12, %52, 12, %53, 12, %54, 12, %55, 12, %56, 12, %57, 12, %58, 12, %59, 12, %60, 12, %61, 12, %62, 12, %63, 12, %64
+ DBG_INSTR_REF 1, 0, !14, !DIExpression(), debug-location !12
+ ; CHECK: DBG_PHI %stack.0, 1, 16
+ ; CHECK: DBG_INSTR_REF 1, 0
+ ; CHECK: renamable $eax = MOV32rm %stack.0,
+ $eax = COPY killed %0, debug-location !19
+ RET 0, killed $eax, debug-location !19
+
+...
--- /dev/null
+# RUN: llc %s -o - -mtriple=x86_64-unknown-unknown \
+# RUN: -experimental-debug-variable-locations \
+# RUN: -start-before=phi-node-elimination -stop-after=virtregrewriter \
+# RUN: | FileCheck %s
+#
+# Pass a PHI node into register allocation, and test that it is correctly
+# dropped. In this test the desired value is an 8 bit copy of an argument,
+# but it's located in an upper subregister field. That coalesces back to the
+# whole argument, which is spilt to the stack.
+#
+# Currently, DBG_PHIs can't describe non-zero offsets in stack slots, therefore
+# no DBG_PHI should be emitted. (This means there is no value for that
+# instruction/operand number, and any DBG_INSTR_REF will become a
+# DBG_VALUE $noreg.
+
+--- |
+ ; ModuleID = 'promoted.ll'
+ source_filename = "test.c"
+ target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+ target triple = "x86_64-unknown-linux-gnu"
+
+ define dso_local i32 @foo(i32 %bar, i32 %baz) !dbg !7 {
+ entry:
+ ret i32 0, !dbg !19
+ }
+
+ declare dso_local i32 @ext(i32)
+
+ ; Function Attrs: nounwind readnone speculatable willreturn
+ declare void @llvm.dbg.value(metadata, metadata, metadata)
+
+ !llvm.dbg.cu = !{!0}
+ !llvm.module.flags = !{!3, !4, !5}
+ !llvm.ident = !{!6}
+
+ !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
+ !1 = !DIFile(filename: "test.c", directory: ".")
+ !2 = !{}
+ !3 = !{i32 7, !"Dwarf Version", i32 4}
+ !4 = !{i32 2, !"Debug Info Version", i32 3}
+ !5 = !{i32 1, !"wchar_size", i32 4}
+ !6 = !{!"."}
+ !7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 2, type: !8, scopeLine: 2, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
+ !8 = !DISubroutineType(types: !9)
+ !9 = !{!10, !10, !10}
+ !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+ !11 = !DILocalVariable(name: "bar", arg: 1, scope: !7, file: !1, line: 2, type: !10)
+ !12 = !DILocation(line: 0, scope: !7)
+ !13 = !DILocalVariable(name: "baz", arg: 2, scope: !7, file: !1, line: 2, type: !10)
+ !14 = !DILocalVariable(name: "either", scope: !7, file: !1, line: 3, type: !10)
+ !15 = !DILocation(line: 4, column: 7, scope: !16)
+ !16 = distinct !DILexicalBlock(scope: !7, file: !1, line: 4, column: 7)
+ !17 = !DILocation(line: 4, column: 7, scope: !7)
+ !18 = !DILocation(line: 0, scope: !16)
+ !19 = !DILocation(line: 9, column: 3, scope: !7)
+
+...
+---
+name: foo
+alignment: 16
+tracksRegLiveness: true
+registers:
+ - { id: 0, class: gr8 }
+ - { id: 1, class: gr32_abcd }
+ - { id: 2, class: gr32_abcd }
+ - { id: 3, class: gr32 }
+ - { id: 4, class: gr32 }
+liveins:
+ - { reg: '$edi', virtual-reg: '%1' }
+ - { reg: '$esi', virtual-reg: '%2' }
+frameInfo:
+ maxAlignment: 1
+ hasCalls: true
+machineFunctionInfo: {}
+body: |
+ bb.0:
+ successors: %bb.2(0x50000000), %bb.1(0x30000000)
+ liveins: $edi, $esi
+
+ DBG_VALUE $edi, $noreg, !11, !DIExpression(), debug-location !12
+ DBG_VALUE $esi, $noreg, !13, !DIExpression(), debug-location !12
+ %2:gr32_abcd = COPY killed $esi
+ %1:gr32_abcd = COPY killed $edi
+ %5:gr8 = COPY %1.sub_8bit_hi
+ %6:gr8 = COPY %1.sub_8bit_hi
+ ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !15
+ %3:gr32 = MOV32r0 implicit-def dead $eflags
+ $edi = COPY killed %3, debug-location !15
+ CALL64pcrel32 @ext, csr_64, implicit $rsp, implicit $ssp, implicit killed $edi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !15
+ ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !15
+ %4:gr32 = COPY killed $eax, debug-location !15
+ %10:gr32 = MOV32ri 0
+ %11:gr32 = MOV32ri 1
+ %12:gr32 = MOV32ri 2
+ %13:gr32 = MOV32ri 3
+ %14:gr32 = MOV32ri 4
+ %15:gr32 = MOV32ri 5
+ %16:gr32 = MOV32ri 6
+ %17:gr32 = MOV32ri 7
+ %18:gr32 = MOV32ri 8
+ %19:gr32 = MOV32ri 9
+ %20:gr32 = MOV32ri 10
+ %21:gr32 = MOV32ri 11
+ %22:gr32 = MOV32ri 12
+ %23:gr32 = MOV32ri 13
+ %24:gr32 = MOV32ri 14
+ TEST32rr killed %4, %4, implicit-def $eflags, debug-location !15
+ JCC_1 %bb.2, 5, implicit killed $eflags, debug-location !17
+ JMP_1 %bb.1, debug-location !17
+
+ bb.1:
+ %30:gr32 = MOV32ri 0
+ %31:gr32 = MOV32ri 1
+ %32:gr32 = MOV32ri 2
+ %33:gr32 = MOV32ri 3
+ %34:gr32 = MOV32ri 4
+ %35:gr32 = MOV32ri 5
+ %36:gr32 = MOV32ri 6
+ %37:gr32 = MOV32ri 7
+ %38:gr32 = MOV32ri 8
+ %39:gr32 = MOV32ri 9
+ %40:gr32 = MOV32ri 10
+ %41:gr32 = MOV32ri 11
+ %42:gr32 = MOV32ri 12
+ %43:gr32 = MOV32ri 13
+ %44:gr32 = MOV32ri 14
+
+ ; CHECK-LABEL: bb.2:
+ bb.2:
+ %0:gr8 = PHI %5, %bb.0, %6, %bb.1, debug-instr-number 1, debug-location !18
+ %50:gr32 = PHI %10, %bb.0, %30, %bb.1, debug-location !18
+ %51:gr32 = PHI %11, %bb.0, %31, %bb.1, debug-location !18
+ %52:gr32 = PHI %12, %bb.0, %32, %bb.1, debug-location !18
+ %53:gr32 = PHI %13, %bb.0, %33, %bb.1, debug-location !18
+ %54:gr32 = PHI %14, %bb.0, %34, %bb.1, debug-location !18
+ %55:gr32 = PHI %15, %bb.0, %35, %bb.1, debug-location !18
+ %56:gr32 = PHI %16, %bb.0, %36, %bb.1, debug-location !18
+ %57:gr32 = PHI %17, %bb.0, %37, %bb.1, debug-location !18
+ %58:gr32 = PHI %18, %bb.0, %38, %bb.1, debug-location !18
+ %59:gr32 = PHI %19, %bb.0, %39, %bb.1, debug-location !18
+ %60:gr32 = PHI %20, %bb.0, %40, %bb.1, debug-location !18
+ %61:gr32 = PHI %21, %bb.0, %41, %bb.1, debug-location !18
+ %62:gr32 = PHI %22, %bb.0, %42, %bb.1, debug-location !18
+ %63:gr32 = PHI %23, %bb.0, %43, %bb.1, debug-location !18
+ %64:gr32 = PHI %24, %bb.0, %44, %bb.1, debug-location !18
+
+ INLINEASM &"", 1, 12, %50, 12, %51, 12, %52, 12, %53, 12, %54, 12, %55, 12, %56, 12, %57, 12, %58, 12, %59, 12, %60, 12, %61, 12, %62, 12, %63, 12, %64
+ DBG_INSTR_REF 1, 0, !14, !DIExpression(), debug-location !12
+ ; CHECK-NOT: DBG_PHI
+ ; CHECK: DBG_INSTR_REF 1, 0
+ ; CHECK-NOT: DBG_PHI
+ $eax = COPY killed %0, debug-location !19
+ RET 0, killed $eax, debug-location !19
+
+...
%64:gr32 = PHI %24, %bb.0, %44, %bb.1, debug-location !18
DBG_INSTR_REF 1, 0, !14, !DIExpression(), debug-location !12
- ; CHECK: DBG_PHI %stack.1, 1
+ ; CHECK: DBG_PHI %stack.1, 1, 32
; CHECK: renamable $eax = MOV32rm %stack.1,
; CHECK: DBG_INSTR_REF 1, 0
$eax = COPY killed %0, debug-location !19
// Create a stack location and ensure it's tracked.
SpillLoc SL = {getRegByName("RSP"), StackOffset::getFixed(-8)};
SpillLocationNo SpillNo = *MTracker->getOrTrackSpillLoc(SL);
- ASSERT_EQ(MTracker->getNumLocs(), 10u); // Tracks all possible stack locs.
+ ASSERT_EQ(MTracker->getNumLocs(), 11u); // Tracks all possible stack locs.
// Locations are: RSP, stack slots from 2^3 bits wide up to 2^9 for zmm regs,
// then slots for sub_8bit_hi and sub_16bit_hi ({8, 8} and {16, 16}).
+ // Finally, one for spilt fp80 registers.
// Pick out the locations on the stack that various x86 regs would be written
// to. HAX is the upper 16 bits of EAX.
// ignore here.
FuncValueTable MInLocs, MOutLocs;
- std::tie(MInLocs, MOutLocs) = allocValueTables(4, 10);
+ std::tie(MInLocs, MOutLocs) = allocValueTables(4, 11);
// Transfer function: start with nothing.
SmallVector<MLocTransferMap, 1> TransferFunc;
// function.
TransferFunc[1].insert({ALStackLoc, ALDefInBlk1});
TransferFunc[1].insert({HAXStackLoc, HAXDefInBlk1});
- initValueArray(MInLocs, 4, 10);
+ initValueArray(MInLocs, 4, 11);
placeMLocPHIs(*MF, AllBlocks, MInLocs, TransferFunc);
EXPECT_EQ(MInLocs[3][ALStackLoc.asU64()], ALPHI);
EXPECT_EQ(MInLocs[3][AXStackLoc.asU64()], AXPHI);
projects / platform / upstream / llvm.git / commitdiff