forked from OSchip/llvm-project
[AArch64] Use fast-math-flags in isAssociativeAndCommutative
Previously only using the UnsafeFPMath option, this now looks for the fast moth flags on the instructions, using the same flag flags as other backends.
This commit is contained in:
David Green
parent
e9dd2b2d4b
commit
908b3b6ccb
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@ -4912,7 +4912,9 @@ bool AArch64InstrInfo::isAssociativeAndCommutative(
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case AArch64::FMULv2f32:
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case AArch64::FMULv2f64:
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case AArch64::FMULv4f32:
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return Inst.getParent()->getParent()->getTarget().Options.UnsafeFPMath;
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return Inst.getParent()->getParent()->getTarget().Options.UnsafeFPMath ||
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(Inst.getFlag(MachineInstr::MIFlag::FmReassoc) &&
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Inst.getFlag(MachineInstr::MIFlag::FmNsz));
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default:
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return false;
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}
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@ -1,31 +1,82 @@
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; RUN: llc -mtriple=aarch64-gnu-linux -mcpu=cortex-a57 -enable-unsafe-fp-math -disable-post-ra < %s | FileCheck %s
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=aarch64-gnu-linux -mcpu=cortex-a57 < %s | FileCheck %s --check-prefixes=CHECK,CHECK-STD
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; RUN: llc -mtriple=aarch64-gnu-linux -mcpu=cortex-a57 -enable-unsafe-fp-math < %s | FileCheck %s --check-prefixes=CHECK,CHECK-UNSAFE
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; Incremental updates of the instruction depths should be enough for this test
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; case.
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; RUN: llc -mtriple=aarch64-gnu-linux -mcpu=cortex-a57 -enable-unsafe-fp-math \
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; RUN: -disable-post-ra -machine-combiner-inc-threshold=0 -machine-combiner-verify-pattern-order=true < %s | FileCheck %s
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; RUN: -machine-combiner-inc-threshold=0 -machine-combiner-verify-pattern-order=true < %s | FileCheck %s --check-prefixes=CHECK,CHECK-UNSAFE
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; Verify that the first two adds are independent regardless of how the inputs are
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; commuted. The destination registers are used as source registers for the third add.
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define float @reassociate_adds1(float %x0, float %x1, float %x2, float %x3) {
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; CHECK-LABEL: reassociate_adds1:
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; CHECK: fadd s0, s0, s1
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; CHECK-NEXT: fadd s1, s2, s3
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; CHECK-NEXT: fadd s0, s0, s1
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; CHECK-NEXT: ret
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; CHECK-STD-LABEL: reassociate_adds1:
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; CHECK-STD: // %bb.0:
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; CHECK-STD-NEXT: fadd s0, s0, s1
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; CHECK-STD-NEXT: fadd s0, s0, s2
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; CHECK-STD-NEXT: fadd s0, s0, s3
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; CHECK-STD-NEXT: ret
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;
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; CHECK-UNSAFE-LABEL: reassociate_adds1:
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; CHECK-UNSAFE: // %bb.0:
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; CHECK-UNSAFE-NEXT: fadd s0, s0, s1
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; CHECK-UNSAFE-NEXT: fadd s1, s2, s3
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; CHECK-UNSAFE-NEXT: fadd s0, s0, s1
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; CHECK-UNSAFE-NEXT: ret
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%t0 = fadd float %x0, %x1
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%t1 = fadd float %t0, %x2
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%t2 = fadd float %t1, %x3
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ret float %t2
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}
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define float @reassociate_adds2(float %x0, float %x1, float %x2, float %x3) {
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; CHECK-LABEL: reassociate_adds2:
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; CHECK: fadd s0, s0, s1
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; CHECK-NEXT: fadd s1, s2, s3
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; CHECK-NEXT: fadd s0, s0, s1
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define float @reassociate_adds1_fast(float %x0, float %x1, float %x2, float %x3) {
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; CHECK-LABEL: reassociate_adds1_fast:
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; CHECK: // %bb.0:
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; CHECK-NEXT: fadd s0, s0, s1
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; CHECK-NEXT: fadd s1, s2, s3
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; CHECK-NEXT: fadd s0, s0, s1
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; CHECK-NEXT: ret
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%t0 = fadd fast float %x0, %x1
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%t1 = fadd fast float %t0, %x2
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%t2 = fadd fast float %t1, %x3
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ret float %t2
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}
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define float @reassociate_adds1_reassoc(float %x0, float %x1, float %x2, float %x3) {
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; CHECK-STD-LABEL: reassociate_adds1_reassoc:
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; CHECK-STD: // %bb.0:
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; CHECK-STD-NEXT: fadd s0, s0, s1
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; CHECK-STD-NEXT: fadd s0, s0, s2
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; CHECK-STD-NEXT: fadd s0, s0, s3
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; CHECK-STD-NEXT: ret
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;
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; CHECK-UNSAFE-LABEL: reassociate_adds1_reassoc:
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; CHECK-UNSAFE: // %bb.0:
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; CHECK-UNSAFE-NEXT: fadd s0, s0, s1
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; CHECK-UNSAFE-NEXT: fadd s1, s2, s3
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; CHECK-UNSAFE-NEXT: fadd s0, s0, s1
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; CHECK-UNSAFE-NEXT: ret
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%t0 = fadd reassoc float %x0, %x1
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%t1 = fadd reassoc float %t0, %x2
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%t2 = fadd reassoc float %t1, %x3
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ret float %t2
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}
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define float @reassociate_adds2(float %x0, float %x1, float %x2, float %x3) {
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; CHECK-STD-LABEL: reassociate_adds2:
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; CHECK-STD: // %bb.0:
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; CHECK-STD-NEXT: fadd s0, s0, s1
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; CHECK-STD-NEXT: fadd s0, s2, s0
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; CHECK-STD-NEXT: fadd s0, s0, s3
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; CHECK-STD-NEXT: ret
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;
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; CHECK-UNSAFE-LABEL: reassociate_adds2:
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; CHECK-UNSAFE: // %bb.0:
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; CHECK-UNSAFE-NEXT: fadd s0, s0, s1
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; CHECK-UNSAFE-NEXT: fadd s1, s2, s3
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; CHECK-UNSAFE-NEXT: fadd s0, s0, s1
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; CHECK-UNSAFE-NEXT: ret
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%t0 = fadd float %x0, %x1
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%t1 = fadd float %x2, %t0
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%t2 = fadd float %t1, %x3
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@ -33,11 +84,19 @@ define float @reassociate_adds2(float %x0, float %x1, float %x2, float %x3) {
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}
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define float @reassociate_adds3(float %x0, float %x1, float %x2, float %x3) {
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; CHECK-LABEL: reassociate_adds3:
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; CHECK: s0, s0, s1
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; CHECK-NEXT: s1, s2, s3
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; CHECK-NEXT: s0, s0, s1
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; CHECK-NEXT: ret
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; CHECK-STD-LABEL: reassociate_adds3:
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; CHECK-STD: // %bb.0:
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; CHECK-STD-NEXT: fadd s0, s0, s1
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; CHECK-STD-NEXT: fadd s0, s0, s2
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; CHECK-STD-NEXT: fadd s0, s3, s0
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; CHECK-STD-NEXT: ret
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;
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; CHECK-UNSAFE-LABEL: reassociate_adds3:
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; CHECK-UNSAFE: // %bb.0:
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; CHECK-UNSAFE-NEXT: fadd s0, s0, s1
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; CHECK-UNSAFE-NEXT: fadd s1, s2, s3
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; CHECK-UNSAFE-NEXT: fadd s0, s0, s1
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; CHECK-UNSAFE-NEXT: ret
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%t0 = fadd float %x0, %x1
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%t1 = fadd float %t0, %x2
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%t2 = fadd float %x3, %t1
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@ -45,11 +104,19 @@ define float @reassociate_adds3(float %x0, float %x1, float %x2, float %x3) {
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}
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define float @reassociate_adds4(float %x0, float %x1, float %x2, float %x3) {
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; CHECK-LABEL: reassociate_adds4:
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; CHECK: s0, s0, s1
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; CHECK-NEXT: s1, s2, s3
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; CHECK-NEXT: s0, s0, s1
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; CHECK-NEXT: ret
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; CHECK-STD-LABEL: reassociate_adds4:
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; CHECK-STD: // %bb.0:
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; CHECK-STD-NEXT: fadd s0, s0, s1
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; CHECK-STD-NEXT: fadd s0, s2, s0
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; CHECK-STD-NEXT: fadd s0, s3, s0
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; CHECK-STD-NEXT: ret
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;
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; CHECK-UNSAFE-LABEL: reassociate_adds4:
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; CHECK-UNSAFE: // %bb.0:
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; CHECK-UNSAFE-NEXT: fadd s0, s0, s1
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; CHECK-UNSAFE-NEXT: fadd s1, s2, s3
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; CHECK-UNSAFE-NEXT: fadd s0, s0, s1
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; CHECK-UNSAFE-NEXT: ret
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%t0 = fadd float %x0, %x1
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%t1 = fadd float %x2, %t0
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%t2 = fadd float %x3, %t1
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@ -60,15 +127,27 @@ define float @reassociate_adds4(float %x0, float %x1, float %x2, float %x3) {
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; produced because that would cost more compile time.
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define float @reassociate_adds5(float %x0, float %x1, float %x2, float %x3, float %x4, float %x5, float %x6, float %x7) {
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; CHECK-LABEL: reassociate_adds5:
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; CHECK: fadd s0, s0, s1
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; CHECK-NEXT: fadd s1, s2, s3
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; CHECK-NEXT: fadd s0, s0, s1
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; CHECK-NEXT: fadd s1, s4, s5
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; CHECK-NEXT: fadd s1, s1, s6
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; CHECK-NEXT: fadd s0, s0, s1
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; CHECK-NEXT: fadd s0, s0, s7
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; CHECK-NEXT: ret
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; CHECK-STD-LABEL: reassociate_adds5:
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; CHECK-STD: // %bb.0:
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; CHECK-STD-NEXT: fadd s0, s0, s1
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; CHECK-STD-NEXT: fadd s0, s0, s2
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; CHECK-STD-NEXT: fadd s0, s0, s3
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; CHECK-STD-NEXT: fadd s0, s0, s4
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; CHECK-STD-NEXT: fadd s0, s0, s5
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; CHECK-STD-NEXT: fadd s0, s0, s6
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; CHECK-STD-NEXT: fadd s0, s0, s7
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; CHECK-STD-NEXT: ret
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;
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; CHECK-UNSAFE-LABEL: reassociate_adds5:
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; CHECK-UNSAFE: // %bb.0:
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; CHECK-UNSAFE-NEXT: fadd s0, s0, s1
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; CHECK-UNSAFE-NEXT: fadd s1, s2, s3
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; CHECK-UNSAFE-NEXT: fadd s0, s0, s1
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; CHECK-UNSAFE-NEXT: fadd s1, s4, s5
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; CHECK-UNSAFE-NEXT: fadd s1, s1, s6
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; CHECK-UNSAFE-NEXT: fadd s0, s0, s1
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; CHECK-UNSAFE-NEXT: fadd s0, s0, s7
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; CHECK-UNSAFE-NEXT: ret
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%t0 = fadd float %x0, %x1
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%t1 = fadd float %t0, %x2
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%t2 = fadd float %t1, %x3
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@ -85,11 +164,19 @@ define float @reassociate_adds5(float %x0, float %x1, float %x2, float %x3, floa
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; division. The latter reassociation would not improve anything.
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define float @reassociate_adds6(float %x0, float %x1, float %x2, float %x3) {
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; CHECK-LABEL: reassociate_adds6:
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; CHECK: fdiv s0, s0, s1
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; CHECK-NEXT: fadd s1, s2, s3
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; CHECK-NEXT: fadd s0, s0, s1
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; CHECK-NEXT: ret
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; CHECK-STD-LABEL: reassociate_adds6:
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; CHECK-STD: // %bb.0:
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; CHECK-STD-NEXT: fdiv s0, s0, s1
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; CHECK-STD-NEXT: fadd s0, s2, s0
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; CHECK-STD-NEXT: fadd s0, s3, s0
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; CHECK-STD-NEXT: ret
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;
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; CHECK-UNSAFE-LABEL: reassociate_adds6:
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; CHECK-UNSAFE: // %bb.0:
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; CHECK-UNSAFE-NEXT: fdiv s0, s0, s1
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; CHECK-UNSAFE-NEXT: fadd s1, s2, s3
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; CHECK-UNSAFE-NEXT: fadd s0, s0, s1
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; CHECK-UNSAFE-NEXT: ret
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%t0 = fdiv float %x0, %x1
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%t1 = fadd float %x2, %t0
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%t2 = fadd float %x3, %t1
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@ -99,11 +186,19 @@ define float @reassociate_adds6(float %x0, float %x1, float %x2, float %x3) {
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; Verify that scalar single-precision multiplies are reassociated.
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define float @reassociate_muls1(float %x0, float %x1, float %x2, float %x3) {
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; CHECK-LABEL: reassociate_muls1:
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; CHECK: fdiv s0, s0, s1
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; CHECK-NEXT: fmul s1, s2, s3
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; CHECK-NEXT: fmul s0, s0, s1
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; CHECK-NEXT: ret
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; CHECK-STD-LABEL: reassociate_muls1:
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; CHECK-STD: // %bb.0:
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; CHECK-STD-NEXT: fdiv s0, s0, s1
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; CHECK-STD-NEXT: fmul s1, s2, s0
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; CHECK-STD-NEXT: fmul s0, s3, s1
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; CHECK-STD-NEXT: ret
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;
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; CHECK-UNSAFE-LABEL: reassociate_muls1:
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; CHECK-UNSAFE: // %bb.0:
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; CHECK-UNSAFE-NEXT: fdiv s0, s0, s1
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; CHECK-UNSAFE-NEXT: fmul s1, s2, s3
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; CHECK-UNSAFE-NEXT: fmul s0, s0, s1
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; CHECK-UNSAFE-NEXT: ret
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%t0 = fdiv float %x0, %x1
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%t1 = fmul float %x2, %t0
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%t2 = fmul float %x3, %t1
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@ -113,11 +208,19 @@ define float @reassociate_muls1(float %x0, float %x1, float %x2, float %x3) {
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; Verify that scalar double-precision adds are reassociated.
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define double @reassociate_adds_double(double %x0, double %x1, double %x2, double %x3) {
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; CHECK-LABEL: reassociate_adds_double:
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; CHECK: fdiv d0, d0, d1
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; CHECK-NEXT: fadd d1, d2, d3
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; CHECK-NEXT: fadd d0, d0, d1
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; CHECK-NEXT: ret
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; CHECK-STD-LABEL: reassociate_adds_double:
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; CHECK-STD: // %bb.0:
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; CHECK-STD-NEXT: fdiv d0, d0, d1
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; CHECK-STD-NEXT: fadd d0, d2, d0
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; CHECK-STD-NEXT: fadd d0, d3, d0
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; CHECK-STD-NEXT: ret
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;
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; CHECK-UNSAFE-LABEL: reassociate_adds_double:
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; CHECK-UNSAFE: // %bb.0:
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; CHECK-UNSAFE-NEXT: fdiv d0, d0, d1
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; CHECK-UNSAFE-NEXT: fadd d1, d2, d3
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; CHECK-UNSAFE-NEXT: fadd d0, d0, d1
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; CHECK-UNSAFE-NEXT: ret
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%t0 = fdiv double %x0, %x1
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%t1 = fadd double %x2, %t0
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%t2 = fadd double %x3, %t1
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@ -127,11 +230,19 @@ define double @reassociate_adds_double(double %x0, double %x1, double %x2, doubl
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; Verify that scalar double-precision multiplies are reassociated.
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define double @reassociate_muls_double(double %x0, double %x1, double %x2, double %x3) {
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; CHECK-LABEL: reassociate_muls_double:
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; CHECK: fdiv d0, d0, d1
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; CHECK-NEXT: fmul d1, d2, d3
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; CHECK-NEXT: fmul d0, d0, d1
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; CHECK-NEXT: ret
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; CHECK-STD-LABEL: reassociate_muls_double:
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; CHECK-STD: // %bb.0:
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; CHECK-STD-NEXT: fdiv d0, d0, d1
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; CHECK-STD-NEXT: fmul d1, d2, d0
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; CHECK-STD-NEXT: fmul d0, d3, d1
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; CHECK-STD-NEXT: ret
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;
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; CHECK-UNSAFE-LABEL: reassociate_muls_double:
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; CHECK-UNSAFE: // %bb.0:
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; CHECK-UNSAFE-NEXT: fdiv d0, d0, d1
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; CHECK-UNSAFE-NEXT: fmul d1, d2, d3
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; CHECK-UNSAFE-NEXT: fmul d0, d0, d1
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; CHECK-UNSAFE-NEXT: ret
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%t0 = fdiv double %x0, %x1
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%t1 = fmul double %x2, %t0
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%t2 = fmul double %x3, %t1
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@ -141,11 +252,19 @@ define double @reassociate_muls_double(double %x0, double %x1, double %x2, doubl
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; Verify that we reassociate vector instructions too.
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define <4 x float> @vector_reassociate_adds1(<4 x float> %x0, <4 x float> %x1, <4 x float> %x2, <4 x float> %x3) {
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; CHECK-LABEL: vector_reassociate_adds1:
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; CHECK: fadd v0.4s, v0.4s, v1.4s
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; CHECK-NEXT: fadd v1.4s, v2.4s, v3.4s
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; CHECK-NEXT: fadd v0.4s, v0.4s, v1.4s
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; CHECK-NEXT: ret
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; CHECK-STD-LABEL: vector_reassociate_adds1:
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; CHECK-STD: // %bb.0:
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; CHECK-STD-NEXT: fadd v0.4s, v0.4s, v1.4s
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; CHECK-STD-NEXT: fadd v0.4s, v0.4s, v2.4s
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; CHECK-STD-NEXT: fadd v0.4s, v0.4s, v3.4s
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; CHECK-STD-NEXT: ret
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;
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; CHECK-UNSAFE-LABEL: vector_reassociate_adds1:
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; CHECK-UNSAFE: // %bb.0:
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; CHECK-UNSAFE-NEXT: fadd v0.4s, v0.4s, v1.4s
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; CHECK-UNSAFE-NEXT: fadd v1.4s, v2.4s, v3.4s
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; CHECK-UNSAFE-NEXT: fadd v0.4s, v0.4s, v1.4s
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; CHECK-UNSAFE-NEXT: ret
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%t0 = fadd <4 x float> %x0, %x1
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%t1 = fadd <4 x float> %t0, %x2
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%t2 = fadd <4 x float> %t1, %x3
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@ -153,10 +272,19 @@ define <4 x float> @vector_reassociate_adds1(<4 x float> %x0, <4 x float> %x1, <
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}
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define <4 x float> @vector_reassociate_adds2(<4 x float> %x0, <4 x float> %x1, <4 x float> %x2, <4 x float> %x3) {
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; CHECK-LABEL: vector_reassociate_adds2:
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; CHECK: fadd v0.4s, v0.4s, v1.4s
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; CHECK-NEXT: fadd v1.4s, v2.4s, v3.4s
|
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; CHECK-NEXT: fadd v0.4s, v0.4s, v1.4s
|
||||
; CHECK-STD-LABEL: vector_reassociate_adds2:
|
||||
; CHECK-STD: // %bb.0:
|
||||
; CHECK-STD-NEXT: fadd v0.4s, v0.4s, v1.4s
|
||||
; CHECK-STD-NEXT: fadd v0.4s, v2.4s, v0.4s
|
||||
; CHECK-STD-NEXT: fadd v0.4s, v0.4s, v3.4s
|
||||
; CHECK-STD-NEXT: ret
|
||||
;
|
||||
; CHECK-UNSAFE-LABEL: vector_reassociate_adds2:
|
||||
; CHECK-UNSAFE: // %bb.0:
|
||||
; CHECK-UNSAFE-NEXT: fadd v0.4s, v0.4s, v1.4s
|
||||
; CHECK-UNSAFE-NEXT: fadd v1.4s, v2.4s, v3.4s
|
||||
; CHECK-UNSAFE-NEXT: fadd v0.4s, v0.4s, v1.4s
|
||||
; CHECK-UNSAFE-NEXT: ret
|
||||
%t0 = fadd <4 x float> %x0, %x1
|
||||
%t1 = fadd <4 x float> %x2, %t0
|
||||
%t2 = fadd <4 x float> %t1, %x3
|
||||
|
|
@ -164,10 +292,19 @@ define <4 x float> @vector_reassociate_adds2(<4 x float> %x0, <4 x float> %x1, <
|
|||
}
|
||||
|
||||
define <4 x float> @vector_reassociate_adds3(<4 x float> %x0, <4 x float> %x1, <4 x float> %x2, <4 x float> %x3) {
|
||||
; CHECK-LABEL: vector_reassociate_adds3:
|
||||
; CHECK: fadd v0.4s, v0.4s, v1.4s
|
||||
; CHECK-NEXT: fadd v1.4s, v2.4s, v3.4s
|
||||
; CHECK-NEXT: fadd v0.4s, v0.4s, v1.4s
|
||||
; CHECK-STD-LABEL: vector_reassociate_adds3:
|
||||
; CHECK-STD: // %bb.0:
|
||||
; CHECK-STD-NEXT: fadd v0.4s, v0.4s, v1.4s
|
||||
; CHECK-STD-NEXT: fadd v0.4s, v0.4s, v2.4s
|
||||
; CHECK-STD-NEXT: fadd v0.4s, v3.4s, v0.4s
|
||||
; CHECK-STD-NEXT: ret
|
||||
;
|
||||
; CHECK-UNSAFE-LABEL: vector_reassociate_adds3:
|
||||
; CHECK-UNSAFE: // %bb.0:
|
||||
; CHECK-UNSAFE-NEXT: fadd v0.4s, v0.4s, v1.4s
|
||||
; CHECK-UNSAFE-NEXT: fadd v1.4s, v2.4s, v3.4s
|
||||
; CHECK-UNSAFE-NEXT: fadd v0.4s, v0.4s, v1.4s
|
||||
; CHECK-UNSAFE-NEXT: ret
|
||||
%t0 = fadd <4 x float> %x0, %x1
|
||||
%t1 = fadd <4 x float> %t0, %x2
|
||||
%t2 = fadd <4 x float> %x3, %t1
|
||||
|
|
@ -175,10 +312,19 @@ define <4 x float> @vector_reassociate_adds3(<4 x float> %x0, <4 x float> %x1, <
|
|||
}
|
||||
|
||||
define <4 x float> @vector_reassociate_adds4(<4 x float> %x0, <4 x float> %x1, <4 x float> %x2, <4 x float> %x3) {
|
||||
; CHECK-LABEL: vector_reassociate_adds4:
|
||||
; CHECK: fadd v0.4s, v0.4s, v1.4s
|
||||
; CHECK-NEXT: fadd v1.4s, v2.4s, v3.4s
|
||||
; CHECK-NEXT: fadd v0.4s, v0.4s, v1.4s
|
||||
; CHECK-STD-LABEL: vector_reassociate_adds4:
|
||||
; CHECK-STD: // %bb.0:
|
||||
; CHECK-STD-NEXT: fadd v0.4s, v0.4s, v1.4s
|
||||
; CHECK-STD-NEXT: fadd v0.4s, v2.4s, v0.4s
|
||||
; CHECK-STD-NEXT: fadd v0.4s, v3.4s, v0.4s
|
||||
; CHECK-STD-NEXT: ret
|
||||
;
|
||||
; CHECK-UNSAFE-LABEL: vector_reassociate_adds4:
|
||||
; CHECK-UNSAFE: // %bb.0:
|
||||
; CHECK-UNSAFE-NEXT: fadd v0.4s, v0.4s, v1.4s
|
||||
; CHECK-UNSAFE-NEXT: fadd v1.4s, v2.4s, v3.4s
|
||||
; CHECK-UNSAFE-NEXT: fadd v0.4s, v0.4s, v1.4s
|
||||
; CHECK-UNSAFE-NEXT: ret
|
||||
%t0 = fadd <4 x float> %x0, %x1
|
||||
%t1 = fadd <4 x float> %x2, %t0
|
||||
%t2 = fadd <4 x float> %x3, %t1
|
||||
|
|
@ -187,11 +333,19 @@ define <4 x float> @vector_reassociate_adds4(<4 x float> %x0, <4 x float> %x1, <
|
|||
; Verify that 128-bit vector single-precision multiplies are reassociated.
|
||||
|
||||
define <4 x float> @reassociate_muls_v4f32(<4 x float> %x0, <4 x float> %x1, <4 x float> %x2, <4 x float> %x3) {
|
||||
; CHECK-LABEL: reassociate_muls_v4f32:
|
||||
; CHECK: fadd v0.4s, v0.4s, v1.4s
|
||||
; CHECK-NEXT: fmul v1.4s, v2.4s, v3.4s
|
||||
; CHECK-NEXT: fmul v0.4s, v0.4s, v1.4s
|
||||
; CHECK-NEXT: ret
|
||||
; CHECK-STD-LABEL: reassociate_muls_v4f32:
|
||||
; CHECK-STD: // %bb.0:
|
||||
; CHECK-STD-NEXT: fadd v0.4s, v0.4s, v1.4s
|
||||
; CHECK-STD-NEXT: fmul v0.4s, v2.4s, v0.4s
|
||||
; CHECK-STD-NEXT: fmul v0.4s, v3.4s, v0.4s
|
||||
; CHECK-STD-NEXT: ret
|
||||
;
|
||||
; CHECK-UNSAFE-LABEL: reassociate_muls_v4f32:
|
||||
; CHECK-UNSAFE: // %bb.0:
|
||||
; CHECK-UNSAFE-NEXT: fadd v0.4s, v0.4s, v1.4s
|
||||
; CHECK-UNSAFE-NEXT: fmul v1.4s, v2.4s, v3.4s
|
||||
; CHECK-UNSAFE-NEXT: fmul v0.4s, v0.4s, v1.4s
|
||||
; CHECK-UNSAFE-NEXT: ret
|
||||
%t0 = fadd <4 x float> %x0, %x1
|
||||
%t1 = fmul <4 x float> %x2, %t0
|
||||
%t2 = fmul <4 x float> %x3, %t1
|
||||
|
|
@ -201,11 +355,19 @@ define <4 x float> @reassociate_muls_v4f32(<4 x float> %x0, <4 x float> %x1, <4
|
|||
; Verify that 128-bit vector double-precision multiplies are reassociated.
|
||||
|
||||
define <2 x double> @reassociate_muls_v2f64(<2 x double> %x0, <2 x double> %x1, <2 x double> %x2, <2 x double> %x3) {
|
||||
; CHECK-LABEL: reassociate_muls_v2f64:
|
||||
; CHECK: fadd v0.2d, v0.2d, v1.2d
|
||||
; CHECK-NEXT: fmul v1.2d, v2.2d, v3.2d
|
||||
; CHECK-NEXT: fmul v0.2d, v0.2d, v1.2d
|
||||
; CHECK-NEXT: ret
|
||||
; CHECK-STD-LABEL: reassociate_muls_v2f64:
|
||||
; CHECK-STD: // %bb.0:
|
||||
; CHECK-STD-NEXT: fadd v0.2d, v0.2d, v1.2d
|
||||
; CHECK-STD-NEXT: fmul v0.2d, v2.2d, v0.2d
|
||||
; CHECK-STD-NEXT: fmul v0.2d, v3.2d, v0.2d
|
||||
; CHECK-STD-NEXT: ret
|
||||
;
|
||||
; CHECK-UNSAFE-LABEL: reassociate_muls_v2f64:
|
||||
; CHECK-UNSAFE: // %bb.0:
|
||||
; CHECK-UNSAFE-NEXT: fadd v0.2d, v0.2d, v1.2d
|
||||
; CHECK-UNSAFE-NEXT: fmul v1.2d, v2.2d, v3.2d
|
||||
; CHECK-UNSAFE-NEXT: fmul v0.2d, v0.2d, v1.2d
|
||||
; CHECK-UNSAFE-NEXT: ret
|
||||
%t0 = fadd <2 x double> %x0, %x1
|
||||
%t1 = fmul <2 x double> %x2, %t0
|
||||
%t2 = fmul <2 x double> %x3, %t1
|
||||
|
|
@ -218,17 +380,55 @@ define <2 x double> @reassociate_muls_v2f64(<2 x double> %x0, <2 x double> %x1,
|
|||
declare double @bar()
|
||||
|
||||
define double @reassociate_adds_from_calls() {
|
||||
; CHECK-LABEL: reassociate_adds_from_calls:
|
||||
; CHECK: bl bar
|
||||
; CHECK-NEXT: fmov d8, d0
|
||||
; CHECK-NEXT: bl bar
|
||||
; CHECK-NEXT: fmov d9, d0
|
||||
; CHECK-NEXT: bl bar
|
||||
; CHECK-NEXT: fmov d10, d0
|
||||
; CHECK-NEXT: bl bar
|
||||
; CHECK: fadd d1, d8, d9
|
||||
; CHECK-NEXT: fadd d0, d10, d0
|
||||
; CHECK-NEXT: fadd d0, d1, d0
|
||||
; CHECK-STD-LABEL: reassociate_adds_from_calls:
|
||||
; CHECK-STD: // %bb.0:
|
||||
; CHECK-STD-NEXT: str d10, [sp, #-32]! // 8-byte Folded Spill
|
||||
; CHECK-STD-NEXT: .cfi_def_cfa_offset 32
|
||||
; CHECK-STD-NEXT: stp d9, d8, [sp, #8] // 16-byte Folded Spill
|
||||
; CHECK-STD-NEXT: str x30, [sp, #24] // 8-byte Folded Spill
|
||||
; CHECK-STD-NEXT: .cfi_offset w30, -8
|
||||
; CHECK-STD-NEXT: .cfi_offset b8, -16
|
||||
; CHECK-STD-NEXT: .cfi_offset b9, -24
|
||||
; CHECK-STD-NEXT: .cfi_offset b10, -32
|
||||
; CHECK-STD-NEXT: bl bar
|
||||
; CHECK-STD-NEXT: fmov d8, d0
|
||||
; CHECK-STD-NEXT: bl bar
|
||||
; CHECK-STD-NEXT: fmov d9, d0
|
||||
; CHECK-STD-NEXT: bl bar
|
||||
; CHECK-STD-NEXT: fmov d10, d0
|
||||
; CHECK-STD-NEXT: bl bar
|
||||
; CHECK-STD-NEXT: fadd d1, d8, d9
|
||||
; CHECK-STD-NEXT: ldp d9, d8, [sp, #8] // 16-byte Folded Reload
|
||||
; CHECK-STD-NEXT: ldr x30, [sp, #24] // 8-byte Folded Reload
|
||||
; CHECK-STD-NEXT: fadd d1, d1, d10
|
||||
; CHECK-STD-NEXT: fadd d0, d1, d0
|
||||
; CHECK-STD-NEXT: ldr d10, [sp], #32 // 8-byte Folded Reload
|
||||
; CHECK-STD-NEXT: ret
|
||||
;
|
||||
; CHECK-UNSAFE-LABEL: reassociate_adds_from_calls:
|
||||
; CHECK-UNSAFE: // %bb.0:
|
||||
; CHECK-UNSAFE-NEXT: str d10, [sp, #-32]! // 8-byte Folded Spill
|
||||
; CHECK-UNSAFE-NEXT: .cfi_def_cfa_offset 32
|
||||
; CHECK-UNSAFE-NEXT: stp d9, d8, [sp, #8] // 16-byte Folded Spill
|
||||
; CHECK-UNSAFE-NEXT: str x30, [sp, #24] // 8-byte Folded Spill
|
||||
; CHECK-UNSAFE-NEXT: .cfi_offset w30, -8
|
||||
; CHECK-UNSAFE-NEXT: .cfi_offset b8, -16
|
||||
; CHECK-UNSAFE-NEXT: .cfi_offset b9, -24
|
||||
; CHECK-UNSAFE-NEXT: .cfi_offset b10, -32
|
||||
; CHECK-UNSAFE-NEXT: bl bar
|
||||
; CHECK-UNSAFE-NEXT: fmov d8, d0
|
||||
; CHECK-UNSAFE-NEXT: bl bar
|
||||
; CHECK-UNSAFE-NEXT: fmov d9, d0
|
||||
; CHECK-UNSAFE-NEXT: bl bar
|
||||
; CHECK-UNSAFE-NEXT: fmov d10, d0
|
||||
; CHECK-UNSAFE-NEXT: bl bar
|
||||
; CHECK-UNSAFE-NEXT: fadd d1, d8, d9
|
||||
; CHECK-UNSAFE-NEXT: fadd d0, d10, d0
|
||||
; CHECK-UNSAFE-NEXT: ldr x30, [sp, #24] // 8-byte Folded Reload
|
||||
; CHECK-UNSAFE-NEXT: ldp d9, d8, [sp, #8] // 16-byte Folded Reload
|
||||
; CHECK-UNSAFE-NEXT: fadd d0, d1, d0
|
||||
; CHECK-UNSAFE-NEXT: ldr d10, [sp], #32 // 8-byte Folded Reload
|
||||
; CHECK-UNSAFE-NEXT: ret
|
||||
%x0 = call double @bar()
|
||||
%x1 = call double @bar()
|
||||
%x2 = call double @bar()
|
||||
|
|
@ -241,16 +441,29 @@ define double @reassociate_adds_from_calls() {
|
|||
|
||||
define double @already_reassociated() {
|
||||
; CHECK-LABEL: already_reassociated:
|
||||
; CHECK: bl bar
|
||||
; CHECK-NEXT: fmov d8, d0
|
||||
; CHECK-NEXT: bl bar
|
||||
; CHECK-NEXT: fmov d9, d0
|
||||
; CHECK-NEXT: bl bar
|
||||
; CHECK-NEXT: fmov d10, d0
|
||||
; CHECK-NEXT: bl bar
|
||||
; CHECK: fadd d1, d8, d9
|
||||
; CHECK-NEXT: fadd d0, d10, d0
|
||||
; CHECK-NEXT: fadd d0, d1, d0
|
||||
; CHECK: // %bb.0:
|
||||
; CHECK-NEXT: str d10, [sp, #-32]! // 8-byte Folded Spill
|
||||
; CHECK-NEXT: .cfi_def_cfa_offset 32
|
||||
; CHECK-NEXT: stp d9, d8, [sp, #8] // 16-byte Folded Spill
|
||||
; CHECK-NEXT: str x30, [sp, #24] // 8-byte Folded Spill
|
||||
; CHECK-NEXT: .cfi_offset w30, -8
|
||||
; CHECK-NEXT: .cfi_offset b8, -16
|
||||
; CHECK-NEXT: .cfi_offset b9, -24
|
||||
; CHECK-NEXT: .cfi_offset b10, -32
|
||||
; CHECK-NEXT: bl bar
|
||||
; CHECK-NEXT: fmov d8, d0
|
||||
; CHECK-NEXT: bl bar
|
||||
; CHECK-NEXT: fmov d9, d0
|
||||
; CHECK-NEXT: bl bar
|
||||
; CHECK-NEXT: fmov d10, d0
|
||||
; CHECK-NEXT: bl bar
|
||||
; CHECK-NEXT: fadd d1, d8, d9
|
||||
; CHECK-NEXT: fadd d0, d10, d0
|
||||
; CHECK-NEXT: ldr x30, [sp, #24] // 8-byte Folded Reload
|
||||
; CHECK-NEXT: ldp d9, d8, [sp, #8] // 16-byte Folded Reload
|
||||
; CHECK-NEXT: fadd d0, d1, d0
|
||||
; CHECK-NEXT: ldr d10, [sp], #32 // 8-byte Folded Reload
|
||||
; CHECK-NEXT: ret
|
||||
%x0 = call double @bar()
|
||||
%x1 = call double @bar()
|
||||
%x2 = call double @bar()
|
||||
|
|
|
|||
Loading…
Reference in New Issue