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2600a27111
Summary: This patch originated from D47388 and is a proper subset of the originating changes, containing only the fmf optimization guard extensions. Reviewers: spatel, hfinkel, wristow, arsenm, javed.absar, rampitec, nhaehnle, nemanjai Reviewed By: rampitec, nhaehnle Subscribers: tpr, nemanjai, wdng Differential Revision: https://reviews.llvm.org/D47918 llvm-svn: 334876
56 lines
1.9 KiB
LLVM
56 lines
1.9 KiB
LLVM
; RUN: llc < %s -verify-machineinstrs -mtriple=aarch64-none-linux-gnu -mattr=+neon | FileCheck %s
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define <2 x float> @fma_1(<2 x float> %A, <2 x float> %B, <2 x float> %C) {
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; CHECK-LABEL: fma_1:
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; CHECK: fmla {{v[0-9]+}}.2s, {{v[0-9]+}}.2s, {{v[0-9]+}}.2s
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%tmp1 = fmul contract <2 x float> %A, %B;
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%tmp2 = fadd contract <2 x float> %C, %tmp1;
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ret <2 x float> %tmp2
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}
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; This case will fold as it was only available through unsafe before, now available from
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; the contract on the fadd
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define <2 x float> @fma_2(<2 x float> %A, <2 x float> %B, <2 x float> %C) {
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; CHECK-LABEL: fma_2:
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; CHECK: fmla {{v[0-9]+}}.2s, {{v[0-9]+}}.2s, {{v[0-9]+}}.2s
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%tmp1 = fmul <2 x float> %A, %B;
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%tmp2 = fadd contract <2 x float> %C, %tmp1;
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ret <2 x float> %tmp2
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}
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define <2 x float> @no_fma_1(<2 x float> %A, <2 x float> %B, <2 x float> %C) {
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; CHECK-LABEL: no_fma_1:
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; CHECK: fmul
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; CHECK: fadd
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%tmp1 = fmul contract <2 x float> %A, %B;
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%tmp2 = fadd <2 x float> %C, %tmp1;
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ret <2 x float> %tmp2
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}
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define <2 x float> @fma_sub_1(<2 x float> %A, <2 x float> %B, <2 x float> %C) {
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; CHECK-LABEL: fma_sub_1:
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; CHECK: fmls {{v[0-9]+}}.2s, {{v[0-9]+}}.2s, {{v[0-9]+}}.2s
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%tmp1 = fmul contract <2 x float> %A, %B;
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%tmp2 = fsub contract <2 x float> %C, %tmp1;
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ret <2 x float> %tmp2
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}
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; This case will fold as it was only available through unsafe before, now available from
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; the contract on the fsub
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define <2 x float> @fma_sub_2(<2 x float> %A, <2 x float> %B, <2 x float> %C) {
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; CHECK-LABEL: fma_sub_2:
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; CHECK: fmls {{v[0-9]+}}.2s, {{v[0-9]+}}.2s, {{v[0-9]+}}.2s
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%tmp1 = fmul <2 x float> %A, %B;
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%tmp2 = fsub contract <2 x float> %C, %tmp1;
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ret <2 x float> %tmp2
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}
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define <2 x float> @no_fma_sub_1(<2 x float> %A, <2 x float> %B, <2 x float> %C) {
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; CHECK-LABEL: no_fma_sub_1:
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; CHECK: fmul
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; CHECK: fsub
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%tmp1 = fmul contract <2 x float> %A, %B;
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%tmp2 = fsub <2 x float> %C, %tmp1;
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ret <2 x float> %tmp2
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}
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