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f9970cbc84
This is a follow-on to r299096 which added support for fmadd. Subtract does not have the case where with two multiply operands we commute in order to fuse with the multiply with the fewer uses. llvm-svn: 299572
54 lines
1.6 KiB
LLVM
54 lines
1.6 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(<2 x float> %A, <2 x float> %B, <2 x float> %C) {
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; CHECK-LABEL: fma:
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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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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> @no_fma_2(<2 x float> %A, <2 x float> %B, <2 x float> %C) {
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; CHECK-LABEL: no_fma_2:
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; CHECK: fmul
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; CHECK: fadd
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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> @fma_sub(<2 x float> %A, <2 x float> %B, <2 x float> %C) {
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; CHECK-LABEL: fma_sub:
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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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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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define <2 x float> @no_fma_sub_2(<2 x float> %A, <2 x float> %B, <2 x float> %C) {
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; CHECK-LABEL: no_fma_sub_2:
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; CHECK: fmul
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; CHECK: fsub
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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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