From: Sander de Smalen <sander.desmalen@arm.com>
Date: Wed, 9 Nov 2022 21:14:25 +0000 (+0000)
Subject: Revert "[AArch64][SME] Disable GlobalISel/FastISel for SME functions."
X-Git-Tag: upstream/17.0.6~28092
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8bcf5df3043a906c7124b70b59eda925eddd7319;p=platform%2Fupstream%2Fllvm.git

Revert "[AArch64][SME] Disable GlobalISel/FastISel for SME functions."

Reverting the patch due to a buildbot failure.

This reverts commit e1e260cc64bd900d5f3f88187c60cb02d3a805f5.
---

diff --git a/llvm/lib/Target/AArch64/AArch64FastISel.cpp b/llvm/lib/Target/AArch64/AArch64FastISel.cpp
index 7ff860b..da7f431 100644
--- a/llvm/lib/Target/AArch64/AArch64FastISel.cpp
+++ b/llvm/lib/Target/AArch64/AArch64FastISel.cpp
@@ -5032,8 +5032,6 @@ bool AArch64FastISel::selectAtomicCmpXchg(const AtomicCmpXchgInst *I) {
 }
 
 bool AArch64FastISel::fastSelectInstruction(const Instruction *I) {
-  if (TLI.fallBackToDAGISel(*I))
-    return false;
   switch (I->getOpcode()) {
   default:
     break;
@@ -5116,10 +5114,5 @@ bool AArch64FastISel::fastSelectInstruction(const Instruction *I) {
 
 FastISel *AArch64::createFastISel(FunctionLoweringInfo &FuncInfo,
                                         const TargetLibraryInfo *LibInfo) {
-
-  SMEAttrs CallerAttrs(*FuncInfo.Fn);
-  if (CallerAttrs.hasZAState() ||
-      (!CallerAttrs.hasStreamingInterface() && CallerAttrs.hasStreamingBody()))
-    return nullptr;
   return new AArch64FastISel(FuncInfo, LibInfo);
 }
diff --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
index ead3fd7..cc77a37 100644
--- a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
+++ b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -22054,15 +22054,6 @@ bool AArch64TargetLowering::fallBackToDAGISel(const Instruction &Inst) const {
       return true;
   }
 
-  // Checks to allow the use of SME instructions
-  if (auto *Base = dyn_cast<CallBase>(&Inst)) {
-    auto CallerAttrs = SMEAttrs(*Inst.getFunction());
-    auto CalleeAttrs = SMEAttrs(*Base);
-    if (CallerAttrs.requiresSMChange(CalleeAttrs,
-                                     /*BodyOverridesInterface=*/false) ||
-        CallerAttrs.requiresLazySave(CalleeAttrs))
-      return true;
-  }
   return false;
 }
 
diff --git a/llvm/lib/Target/AArch64/GISel/AArch64CallLowering.cpp b/llvm/lib/Target/AArch64/GISel/AArch64CallLowering.cpp
index 0879826..972a0dc 100644
--- a/llvm/lib/Target/AArch64/GISel/AArch64CallLowering.cpp
+++ b/llvm/lib/Target/AArch64/GISel/AArch64CallLowering.cpp
@@ -537,12 +537,6 @@ bool AArch64CallLowering::fallBackToDAGISel(const MachineFunction &MF) const {
     LLVM_DEBUG(dbgs() << "Falling back to SDAG because we don't support no-NEON\n");
     return true;
   }
-
-  SMEAttrs Attrs(F);
-  if (Attrs.hasNewZAInterface() ||
-      (!Attrs.hasStreamingInterface() && Attrs.hasStreamingBody()))
-    return true;
-
   return false;
 }
 
diff --git a/llvm/test/CodeGen/AArch64/sme-disable-gisel-fisel.ll b/llvm/test/CodeGen/AArch64/sme-disable-gisel-fisel.ll
deleted file mode 100644
index 3f83419..0000000
--- a/llvm/test/CodeGen/AArch64/sme-disable-gisel-fisel.ll
+++ /dev/null
@@ -1,359 +0,0 @@
-; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
-; RUN: llc -fast-isel=true -global-isel=false -fast-isel-abort=0 -mtriple=aarch64-linux-gnu -mattr=+sme < %s \
-; RUN:     | FileCheck %s --check-prefixes=CHECK-COMMON,CHECK-FISEL
-; RUN: llc -fast-isel=false -global-isel=true -global-isel-abort=0 -mtriple=aarch64-linux-gnu -mattr=+sme < %s \
-; RUN:     | FileCheck %s --check-prefixes=CHECK-COMMON,CHECK-GISEL
-
-
-declare double @streaming_callee(double) "aarch64_pstate_sm_enabled"
-declare double @normal_callee(double)
-
-define double @nonstreaming_caller_streaming_callee(double %x) nounwind noinline optnone {
-; CHECK-FISEL-LABEL: nonstreaming_caller_streaming_callee:
-; CHECK-FISEL:       // %bb.0: // %entry
-; CHECK-FISEL-NEXT:    sub sp, sp, #96
-; CHECK-FISEL-NEXT:    stp d15, d14, [sp, #16] // 16-byte Folded Spill
-; CHECK-FISEL-NEXT:    stp d13, d12, [sp, #32] // 16-byte Folded Spill
-; CHECK-FISEL-NEXT:    stp d11, d10, [sp, #48] // 16-byte Folded Spill
-; CHECK-FISEL-NEXT:    stp d9, d8, [sp, #64] // 16-byte Folded Spill
-; CHECK-FISEL-NEXT:    str x30, [sp, #80] // 8-byte Folded Spill
-; CHECK-FISEL-NEXT:    str d0, [sp, #8] // 8-byte Folded Spill
-; CHECK-FISEL-NEXT:    smstart sm
-; CHECK-FISEL-NEXT:    ldr d0, [sp, #8] // 8-byte Folded Reload
-; CHECK-FISEL-NEXT:    bl streaming_callee
-; CHECK-FISEL-NEXT:    str d0, [sp, #88] // 8-byte Folded Spill
-; CHECK-FISEL-NEXT:    smstop sm
-; CHECK-FISEL-NEXT:    adrp x8, .LCPI0_0
-; CHECK-FISEL-NEXT:    ldr d0, [x8, :lo12:.LCPI0_0]
-; CHECK-FISEL-NEXT:    ldr d1, [sp, #88] // 8-byte Folded Reload
-; CHECK-FISEL-NEXT:    fadd d0, d1, d0
-; CHECK-FISEL-NEXT:    ldr x30, [sp, #80] // 8-byte Folded Reload
-; CHECK-FISEL-NEXT:    ldp d9, d8, [sp, #64] // 16-byte Folded Reload
-; CHECK-FISEL-NEXT:    ldp d11, d10, [sp, #48] // 16-byte Folded Reload
-; CHECK-FISEL-NEXT:    ldp d13, d12, [sp, #32] // 16-byte Folded Reload
-; CHECK-FISEL-NEXT:    ldp d15, d14, [sp, #16] // 16-byte Folded Reload
-; CHECK-FISEL-NEXT:    add sp, sp, #96
-; CHECK-FISEL-NEXT:    ret
-;
-; CHECK-GISEL-LABEL: nonstreaming_caller_streaming_callee:
-; CHECK-GISEL:       // %bb.0: // %entry
-; CHECK-GISEL-NEXT:    sub sp, sp, #96
-; CHECK-GISEL-NEXT:    stp d15, d14, [sp, #16] // 16-byte Folded Spill
-; CHECK-GISEL-NEXT:    stp d13, d12, [sp, #32] // 16-byte Folded Spill
-; CHECK-GISEL-NEXT:    stp d11, d10, [sp, #48] // 16-byte Folded Spill
-; CHECK-GISEL-NEXT:    stp d9, d8, [sp, #64] // 16-byte Folded Spill
-; CHECK-GISEL-NEXT:    str x30, [sp, #80] // 8-byte Folded Spill
-; CHECK-GISEL-NEXT:    str d0, [sp, #8] // 8-byte Folded Spill
-; CHECK-GISEL-NEXT:    smstart sm
-; CHECK-GISEL-NEXT:    ldr d0, [sp, #8] // 8-byte Folded Reload
-; CHECK-GISEL-NEXT:    bl streaming_callee
-; CHECK-GISEL-NEXT:    str d0, [sp, #88] // 8-byte Folded Spill
-; CHECK-GISEL-NEXT:    smstop sm
-; CHECK-GISEL-NEXT:    mov x8, #4631107791820423168
-; CHECK-GISEL-NEXT:    fmov d0, x8
-; CHECK-GISEL-NEXT:    ldr d1, [sp, #88] // 8-byte Folded Reload
-; CHECK-GISEL-NEXT:    fadd d0, d1, d0
-; CHECK-GISEL-NEXT:    ldr x30, [sp, #80] // 8-byte Folded Reload
-; CHECK-GISEL-NEXT:    ldp d9, d8, [sp, #64] // 16-byte Folded Reload
-; CHECK-GISEL-NEXT:    ldp d11, d10, [sp, #48] // 16-byte Folded Reload
-; CHECK-GISEL-NEXT:    ldp d13, d12, [sp, #32] // 16-byte Folded Reload
-; CHECK-GISEL-NEXT:    ldp d15, d14, [sp, #16] // 16-byte Folded Reload
-; CHECK-GISEL-NEXT:    add sp, sp, #96
-; CHECK-GISEL-NEXT:    ret
-entry:
-  %call = call double @streaming_callee(double %x) "aarch64_pstate_sm_enabled"
-  %add = fadd double %call, 4.200000e+01
-  ret double %add
-}
-
-
-define double @streaming_caller_nonstreaming_callee(double %x) nounwind noinline optnone "aarch64_pstate_sm_enabled" {
-; CHECK-FISEL-LABEL: streaming_caller_nonstreaming_callee:
-; CHECK-FISEL:       // %bb.0: // %entry
-; CHECK-FISEL-NEXT:    sub sp, sp, #96
-; CHECK-FISEL-NEXT:    stp d15, d14, [sp, #16] // 16-byte Folded Spill
-; CHECK-FISEL-NEXT:    stp d13, d12, [sp, #32] // 16-byte Folded Spill
-; CHECK-FISEL-NEXT:    stp d11, d10, [sp, #48] // 16-byte Folded Spill
-; CHECK-FISEL-NEXT:    stp d9, d8, [sp, #64] // 16-byte Folded Spill
-; CHECK-FISEL-NEXT:    str x30, [sp, #80] // 8-byte Folded Spill
-; CHECK-FISEL-NEXT:    str d0, [sp, #8] // 8-byte Folded Spill
-; CHECK-FISEL-NEXT:    smstop sm
-; CHECK-FISEL-NEXT:    ldr d0, [sp, #8] // 8-byte Folded Reload
-; CHECK-FISEL-NEXT:    bl normal_callee
-; CHECK-FISEL-NEXT:    str d0, [sp, #88] // 8-byte Folded Spill
-; CHECK-FISEL-NEXT:    smstart sm
-; CHECK-FISEL-NEXT:    adrp x8, .LCPI1_0
-; CHECK-FISEL-NEXT:    ldr d0, [x8, :lo12:.LCPI1_0]
-; CHECK-FISEL-NEXT:    ldr d1, [sp, #88] // 8-byte Folded Reload
-; CHECK-FISEL-NEXT:    fadd d0, d1, d0
-; CHECK-FISEL-NEXT:    ldr x30, [sp, #80] // 8-byte Folded Reload
-; CHECK-FISEL-NEXT:    ldp d9, d8, [sp, #64] // 16-byte Folded Reload
-; CHECK-FISEL-NEXT:    ldp d11, d10, [sp, #48] // 16-byte Folded Reload
-; CHECK-FISEL-NEXT:    ldp d13, d12, [sp, #32] // 16-byte Folded Reload
-; CHECK-FISEL-NEXT:    ldp d15, d14, [sp, #16] // 16-byte Folded Reload
-; CHECK-FISEL-NEXT:    add sp, sp, #96
-; CHECK-FISEL-NEXT:    ret
-;
-; CHECK-GISEL-LABEL: streaming_caller_nonstreaming_callee:
-; CHECK-GISEL:       // %bb.0: // %entry
-; CHECK-GISEL-NEXT:    sub sp, sp, #96
-; CHECK-GISEL-NEXT:    stp d15, d14, [sp, #16] // 16-byte Folded Spill
-; CHECK-GISEL-NEXT:    stp d13, d12, [sp, #32] // 16-byte Folded Spill
-; CHECK-GISEL-NEXT:    stp d11, d10, [sp, #48] // 16-byte Folded Spill
-; CHECK-GISEL-NEXT:    stp d9, d8, [sp, #64] // 16-byte Folded Spill
-; CHECK-GISEL-NEXT:    str x30, [sp, #80] // 8-byte Folded Spill
-; CHECK-GISEL-NEXT:    str d0, [sp, #8] // 8-byte Folded Spill
-; CHECK-GISEL-NEXT:    smstop sm
-; CHECK-GISEL-NEXT:    ldr d0, [sp, #8] // 8-byte Folded Reload
-; CHECK-GISEL-NEXT:    bl normal_callee
-; CHECK-GISEL-NEXT:    str d0, [sp, #88] // 8-byte Folded Spill
-; CHECK-GISEL-NEXT:    smstart sm
-; CHECK-GISEL-NEXT:    mov x8, #4631107791820423168
-; CHECK-GISEL-NEXT:    fmov d0, x8
-; CHECK-GISEL-NEXT:    ldr d1, [sp, #88] // 8-byte Folded Reload
-; CHECK-GISEL-NEXT:    fadd d0, d1, d0
-; CHECK-GISEL-NEXT:    ldr x30, [sp, #80] // 8-byte Folded Reload
-; CHECK-GISEL-NEXT:    ldp d9, d8, [sp, #64] // 16-byte Folded Reload
-; CHECK-GISEL-NEXT:    ldp d11, d10, [sp, #48] // 16-byte Folded Reload
-; CHECK-GISEL-NEXT:    ldp d13, d12, [sp, #32] // 16-byte Folded Reload
-; CHECK-GISEL-NEXT:    ldp d15, d14, [sp, #16] // 16-byte Folded Reload
-; CHECK-GISEL-NEXT:    add sp, sp, #96
-; CHECK-GISEL-NEXT:    ret
-entry:
-  %call = call double @normal_callee(double %x)
-  %add = fadd double %call, 4.200000e+01
-  ret double %add
-}
-
-define double @locally_streaming_caller_normal_callee(double %x) nounwind noinline optnone "aarch64_pstate_sm_body" {
-; CHECK-COMMON-LABEL: locally_streaming_caller_normal_callee:
-; CHECK-COMMON:       // %bb.0:
-; CHECK-COMMON-NEXT:    sub sp, sp, #96
-; CHECK-COMMON-NEXT:    stp d15, d14, [sp, #16] // 16-byte Folded Spill
-; CHECK-COMMON-NEXT:    stp d13, d12, [sp, #32] // 16-byte Folded Spill
-; CHECK-COMMON-NEXT:    stp d11, d10, [sp, #48] // 16-byte Folded Spill
-; CHECK-COMMON-NEXT:    stp d9, d8, [sp, #64] // 16-byte Folded Spill
-; CHECK-COMMON-NEXT:    str x30, [sp, #80] // 8-byte Folded Spill
-; CHECK-COMMON-NEXT:    str d0, [sp, #88] // 8-byte Folded Spill
-; CHECK-COMMON-NEXT:    smstart sm
-; CHECK-COMMON-NEXT:    smstop sm
-; CHECK-COMMON-NEXT:    ldr d0, [sp, #88] // 8-byte Folded Reload
-; CHECK-COMMON-NEXT:    bl normal_callee
-; CHECK-COMMON-NEXT:    str d0, [sp, #8] // 8-byte Folded Spill
-; CHECK-COMMON-NEXT:    smstart sm
-; CHECK-COMMON-NEXT:    mov x8, #4631107791820423168
-; CHECK-COMMON-NEXT:    fmov d0, x8
-; CHECK-COMMON-NEXT:    ldr d1, [sp, #8] // 8-byte Folded Reload
-; CHECK-COMMON-NEXT:    fadd d0, d1, d0
-; CHECK-COMMON-NEXT:    str d0, [sp] // 8-byte Folded Spill
-; CHECK-COMMON-NEXT:    smstop sm
-; CHECK-COMMON-NEXT:    ldr d0, [sp] // 8-byte Folded Reload
-; CHECK-COMMON-NEXT:    ldr x30, [sp, #80] // 8-byte Folded Reload
-; CHECK-COMMON-NEXT:    ldp d9, d8, [sp, #64] // 16-byte Folded Reload
-; CHECK-COMMON-NEXT:    ldp d11, d10, [sp, #48] // 16-byte Folded Reload
-; CHECK-COMMON-NEXT:    ldp d13, d12, [sp, #32] // 16-byte Folded Reload
-; CHECK-COMMON-NEXT:    ldp d15, d14, [sp, #16] // 16-byte Folded Reload
-; CHECK-COMMON-NEXT:    add sp, sp, #96
-; CHECK-COMMON-NEXT:    ret
-  %call = call double  @normal_callee(double %x);
-  %add = fadd double %call, 4.200000e+01
-  ret double %add;
-}
-
-define double @normal_caller_to_locally_streaming_callee(double %x) nounwind noinline optnone {
-; CHECK-COMMON-LABEL: normal_caller_to_locally_streaming_callee:
-; CHECK-COMMON:       // %bb.0:
-; CHECK-COMMON-NEXT:    str x30, [sp, #-16]! // 8-byte Folded Spill
-; CHECK-COMMON-NEXT:    bl locally_streaming_caller_normal_callee
-; CHECK-COMMON-NEXT:    adrp x8, .LCPI3_0
-; CHECK-COMMON-NEXT:    ldr d1, [x8, :lo12:.LCPI3_0]
-; CHECK-COMMON-NEXT:    fadd d0, d0, d1
-; CHECK-COMMON-NEXT:    ldr x30, [sp], #16 // 8-byte Folded Reload
-; CHECK-COMMON-NEXT:    ret
-  %call = call double  @locally_streaming_caller_normal_callee(double %x) "aarch64_pstate_sm_body";
-  %add = fadd double %call, 4.200000e+01
-  ret double %add;
-}
-
-; Check attribute in the call itself
-
-define void @locally_streaming_caller_streaming_callee_ptr(ptr %p) nounwind noinline optnone "aarch64_pstate_sm_body" {
-; CHECK-COMMON-LABEL: locally_streaming_caller_streaming_callee_ptr:
-; CHECK-COMMON:       // %bb.0:
-; CHECK-COMMON-NEXT:    stp d15, d14, [sp, #-80]! // 16-byte Folded Spill
-; CHECK-COMMON-NEXT:    stp d13, d12, [sp, #16] // 16-byte Folded Spill
-; CHECK-COMMON-NEXT:    stp d11, d10, [sp, #32] // 16-byte Folded Spill
-; CHECK-COMMON-NEXT:    stp d9, d8, [sp, #48] // 16-byte Folded Spill
-; CHECK-COMMON-NEXT:    str x30, [sp, #64] // 8-byte Folded Spill
-; CHECK-COMMON-NEXT:    smstart sm
-; CHECK-COMMON-NEXT:    blr x0
-; CHECK-COMMON-NEXT:    smstop sm
-; CHECK-COMMON-NEXT:    ldr x30, [sp, #64] // 8-byte Folded Reload
-; CHECK-COMMON-NEXT:    ldp d9, d8, [sp, #48] // 16-byte Folded Reload
-; CHECK-COMMON-NEXT:    ldp d11, d10, [sp, #32] // 16-byte Folded Reload
-; CHECK-COMMON-NEXT:    ldp d13, d12, [sp, #16] // 16-byte Folded Reload
-; CHECK-COMMON-NEXT:    ldp d15, d14, [sp], #80 // 16-byte Folded Reload
-; CHECK-COMMON-NEXT:    ret
- call void %p() "aarch64_pstate_sm_enabled"
-  ret void
-}
-
-define void @normal_call_to_streaming_callee_ptr(ptr %p) nounwind noinline optnone {
-; CHECK-COMMON-LABEL: normal_call_to_streaming_callee_ptr:
-; CHECK-COMMON:       // %bb.0:
-; CHECK-COMMON-NEXT:    stp d15, d14, [sp, #-80]! // 16-byte Folded Spill
-; CHECK-COMMON-NEXT:    stp d13, d12, [sp, #16] // 16-byte Folded Spill
-; CHECK-COMMON-NEXT:    stp d11, d10, [sp, #32] // 16-byte Folded Spill
-; CHECK-COMMON-NEXT:    stp d9, d8, [sp, #48] // 16-byte Folded Spill
-; CHECK-COMMON-NEXT:    str x30, [sp, #64] // 8-byte Folded Spill
-; CHECK-COMMON-NEXT:    smstart sm
-; CHECK-COMMON-NEXT:    blr x0
-; CHECK-COMMON-NEXT:    smstop sm
-; CHECK-COMMON-NEXT:    ldr x30, [sp, #64] // 8-byte Folded Reload
-; CHECK-COMMON-NEXT:    ldp d9, d8, [sp, #48] // 16-byte Folded Reload
-; CHECK-COMMON-NEXT:    ldp d11, d10, [sp, #32] // 16-byte Folded Reload
-; CHECK-COMMON-NEXT:    ldp d13, d12, [sp, #16] // 16-byte Folded Reload
-; CHECK-COMMON-NEXT:    ldp d15, d14, [sp], #80 // 16-byte Folded Reload
-; CHECK-COMMON-NEXT:    ret
-  call void %p() "aarch64_pstate_sm_enabled"
-  ret void
-}
-
-;
-; Check ZA state
-;
-
-declare double @za_shared_callee(double) "aarch64_pstate_za_shared"
-
-define double  @za_new_caller_to_za_shared_callee(double %x) nounwind noinline optnone "aarch64_pstate_za_new"{
-; CHECK-COMMON-LABEL: za_new_caller_to_za_shared_callee:
-; CHECK-COMMON:       // %bb.0: // %prelude
-; CHECK-COMMON-NEXT:    stp x29, x30, [sp, #-16]! // 16-byte Folded Spill
-; CHECK-COMMON-NEXT:    mov x29, sp
-; CHECK-COMMON-NEXT:    sub sp, sp, #16
-; CHECK-COMMON-NEXT:    rdsvl x8, #1
-; CHECK-COMMON-NEXT:    mov x9, sp
-; CHECK-COMMON-NEXT:    msub x8, x8, x8, x9
-; CHECK-COMMON-NEXT:    mov sp, x8
-; CHECK-COMMON-NEXT:    str x8, [x29]
-; CHECK-COMMON-NEXT:    mrs x8, TPIDR2_EL0
-; CHECK-COMMON-NEXT:    cbz x8, .LBB6_2
-; CHECK-COMMON-NEXT:    b .LBB6_1
-; CHECK-COMMON-NEXT:  .LBB6_1: // %save.za
-; CHECK-COMMON-NEXT:    bl __arm_tpidr2_save
-; CHECK-COMMON-NEXT:    msr TPIDR2_EL0, xzr
-; CHECK-COMMON-NEXT:    b .LBB6_2
-; CHECK-COMMON-NEXT:  .LBB6_2: // %entry
-; CHECK-COMMON-NEXT:    smstart za
-; CHECK-COMMON-NEXT:    bl za_shared_callee
-; CHECK-COMMON-NEXT:    mov x8, #4631107791820423168
-; CHECK-COMMON-NEXT:    fmov d1, x8
-; CHECK-COMMON-NEXT:    fadd d0, d0, d1
-; CHECK-COMMON-NEXT:    smstop za
-; CHECK-COMMON-NEXT:    mov sp, x29
-; CHECK-COMMON-NEXT:    ldp x29, x30, [sp], #16 // 16-byte Folded Reload
-; CHECK-COMMON-NEXT:    ret
-entry:
-  %call = call double @za_shared_callee(double %x)
-  %add = fadd double %call, 4.200000e+01
-  ret double %add;
-}
-
-define double  @za_shared_caller_to_za_none_callee(double %x) nounwind noinline optnone "aarch64_pstate_za_shared"{
-; CHECK-COMMON-LABEL: za_shared_caller_to_za_none_callee:
-; CHECK-COMMON:       // %bb.0: // %entry
-; CHECK-COMMON-NEXT:    stp x29, x30, [sp, #-16]! // 16-byte Folded Spill
-; CHECK-COMMON-NEXT:    mov x29, sp
-; CHECK-COMMON-NEXT:    sub sp, sp, #16
-; CHECK-COMMON-NEXT:    rdsvl x8, #1
-; CHECK-COMMON-NEXT:    mul x8, x8, x8
-; CHECK-COMMON-NEXT:    mov x9, sp
-; CHECK-COMMON-NEXT:    subs x9, x9, x8
-; CHECK-COMMON-NEXT:    mov sp, x9
-; CHECK-COMMON-NEXT:    str x9, [x29]
-; CHECK-COMMON-NEXT:    sturh w8, [x29, #-8]
-; CHECK-COMMON-NEXT:    sub x8, x29, #16
-; CHECK-COMMON-NEXT:    msr TPIDR2_EL0, x8
-; CHECK-COMMON-NEXT:    bl normal_callee
-; CHECK-COMMON-NEXT:    smstart za
-; CHECK-COMMON-NEXT:    mrs x8, TPIDR2_EL0
-; CHECK-COMMON-NEXT:    sub x0, x29, #16
-; CHECK-COMMON-NEXT:    cbz x8, .LBB7_1
-; CHECK-COMMON-NEXT:    b .LBB7_2
-; CHECK-COMMON-NEXT:  .LBB7_1: // %entry
-; CHECK-COMMON-NEXT:    bl __arm_tpidr2_restore
-; CHECK-COMMON-NEXT:    b .LBB7_2
-; CHECK-COMMON-NEXT:  .LBB7_2: // %entry
-; CHECK-COMMON-NEXT:    msr TPIDR2_EL0, xzr
-; CHECK-COMMON-NEXT:    mov x8, #4631107791820423168
-; CHECK-COMMON-NEXT:    fmov d1, x8
-; CHECK-COMMON-NEXT:    fadd d0, d0, d1
-; CHECK-COMMON-NEXT:    mov sp, x29
-; CHECK-COMMON-NEXT:    ldp x29, x30, [sp], #16 // 16-byte Folded Reload
-; CHECK-COMMON-NEXT:    ret
-entry:
-  %call = call double @normal_callee(double %x)
-  %add = fadd double %call, 4.200000e+01
-  ret double %add;
-}
-
-; Ensure we set up and restore the lazy save correctly for instructions which are lowered to lib calls.
-define fp128 @f128_call_za(fp128 %a, fp128 %b) "aarch64_pstate_za_shared" nounwind {
-; CHECK-COMMON-LABEL: f128_call_za:
-; CHECK-COMMON:       // %bb.0:
-; CHECK-COMMON-NEXT:    stp x29, x30, [sp, #-16]! // 16-byte Folded Spill
-; CHECK-COMMON-NEXT:    mov x29, sp
-; CHECK-COMMON-NEXT:    sub sp, sp, #16
-; CHECK-COMMON-NEXT:    rdsvl x8, #1
-; CHECK-COMMON-NEXT:    mov x9, sp
-; CHECK-COMMON-NEXT:    mul x8, x8, x8
-; CHECK-COMMON-NEXT:    sub x9, x9, x8
-; CHECK-COMMON-NEXT:    mov sp, x9
-; CHECK-COMMON-NEXT:    sub x10, x29, #16
-; CHECK-COMMON-NEXT:    sturh w8, [x29, #-8]
-; CHECK-COMMON-NEXT:    str x9, [x29]
-; CHECK-COMMON-NEXT:    msr TPIDR2_EL0, x10
-; CHECK-COMMON-NEXT:    bl __addtf3
-; CHECK-COMMON-NEXT:    smstart za
-; CHECK-COMMON-NEXT:    add x0, x29, #0
-; CHECK-COMMON-NEXT:    mrs x8, TPIDR2_EL0
-; CHECK-COMMON-NEXT:    cbnz x8, .LBB8_2
-; CHECK-COMMON-NEXT:  // %bb.1:
-; CHECK-COMMON-NEXT:    bl __arm_tpidr2_restore
-; CHECK-COMMON-NEXT:  .LBB8_2:
-; CHECK-COMMON-NEXT:    msr TPIDR2_EL0, xzr
-; CHECK-COMMON-NEXT:    mov sp, x29
-; CHECK-COMMON-NEXT:    ldp x29, x30, [sp], #16 // 16-byte Folded Reload
-; CHECK-COMMON-NEXT:    ret
-  %res = fadd fp128 %a, %b
-  ret fp128 %res
-}
-
-
-; Ensure we fall back to SelectionDAG isel here so that we temporarily disable streaming mode to lower the fadd (with function calls).
-define fp128 @f128_call_sm(fp128 %a, fp128 %b) "aarch64_pstate_sm_enabled" nounwind {
-; CHECK-COMMON-LABEL: f128_call_sm:
-; CHECK-COMMON:       // %bb.0:
-; CHECK-COMMON-NEXT:    sub sp, sp, #112
-; CHECK-COMMON-NEXT:    stp d15, d14, [sp, #32] // 16-byte Folded Spill
-; CHECK-COMMON-NEXT:    stp d13, d12, [sp, #48] // 16-byte Folded Spill
-; CHECK-COMMON-NEXT:    stp d11, d10, [sp, #64] // 16-byte Folded Spill
-; CHECK-COMMON-NEXT:    stp d9, d8, [sp, #80] // 16-byte Folded Spill
-; CHECK-COMMON-NEXT:    str x30, [sp, #96] // 8-byte Folded Spill
-; CHECK-COMMON-NEXT:    stp q0, q1, [sp] // 32-byte Folded Spill
-; CHECK-COMMON-NEXT:    smstop sm
-; CHECK-COMMON-NEXT:    ldp q0, q1, [sp] // 32-byte Folded Reload
-; CHECK-COMMON-NEXT:    bl __addtf3
-; CHECK-COMMON-NEXT:    str q0, [sp, #16] // 16-byte Folded Spill
-; CHECK-COMMON-NEXT:    smstart sm
-; CHECK-COMMON-NEXT:    ldp d9, d8, [sp, #80] // 16-byte Folded Reload
-; CHECK-COMMON-NEXT:    ldp d11, d10, [sp, #64] // 16-byte Folded Reload
-; CHECK-COMMON-NEXT:    ldp d13, d12, [sp, #48] // 16-byte Folded Reload
-; CHECK-COMMON-NEXT:    ldp d15, d14, [sp, #32] // 16-byte Folded Reload
-; CHECK-COMMON-NEXT:    ldr q0, [sp, #16] // 16-byte Folded Reload
-; CHECK-COMMON-NEXT:    ldr x30, [sp, #96] // 8-byte Folded Reload
-; CHECK-COMMON-NEXT:    add sp, sp, #112
-; CHECK-COMMON-NEXT:    ret
-  %res = fadd fp128 %a, %b
-  ret fp128 %res
-}