3f3d522ba7
fixes https://github.com/llvm/llvm-project/issues/129432 Recognize expansion sequence of negate where it isn't legal in order to select multiply-subtract.
37 lines
1.4 KiB
LLVM
37 lines
1.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
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; RUN: llc -verify-machineinstrs < %s -mcpu=pwr5 -mtriple=ppc32-- -mattr=+altivec | FileCheck %s
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define dso_local <4 x float> @intrinsic(<4 x float> noundef %a, <4 x float> noundef %b, <4 x float> noundef %c) local_unnamed_addr {
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; CHECK-LABEL: intrinsic:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: vnmsubfp 2, 2, 3, 4
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; CHECK-NEXT: blr
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entry:
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%0 = tail call <4 x float> @llvm.ppc.altivec.vnmsubfp(<4 x float> %a, <4 x float> %b, <4 x float> %c)
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ret <4 x float> %0
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}
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define <4 x float> @manual_llvm_fma(<4 x float> %a, <4 x float> %b, <4 x float> %c) unnamed_addr {
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; CHECK-LABEL: manual_llvm_fma:
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; CHECK: # %bb.0: # %start
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; CHECK-NEXT: vnmsubfp 2, 2, 3, 4
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; CHECK-NEXT: blr
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start:
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%0 = fneg <4 x float> %c
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%1 = tail call <4 x float> @llvm.fma.v4f32(<4 x float> %a, <4 x float> %b, <4 x float> %0)
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%2 = fneg <4 x float> %1
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ret <4 x float> %2
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}
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define dso_local <4 x float> @manual_vmaddfp(<4 x float> noundef %a, <4 x float> noundef %b, <4 x float> noundef %c) local_unnamed_addr {
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; CHECK-LABEL: manual_vmaddfp:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: vnmsubfp 2, 2, 3, 4
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; CHECK-NEXT: blr
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entry:
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%fneg.i3 = fneg <4 x float> %c
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%0 = tail call <4 x float> @llvm.ppc.altivec.vmaddfp(<4 x float> %a, <4 x float> %b, <4 x float> %fneg.i3)
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%fneg.i = fneg <4 x float> %0
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ret <4 x float> %fneg.i
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}
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