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[X86][FMA] Add FMA 'negated expression' combine tests for D63141
llvm-svn: 369384
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py | ||
; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu -mattr=+avx,fma | FileCheck %s --check-prefixes=CHECK,FMA3 | ||
; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu -mattr=+avx,fma4 | FileCheck %s --check-prefixes=CHECK,FMA4 | ||
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define float @test_fneg_fma_subx_y_negz_f32(float %w, float %x, float %y, float %z) { | ||
; FMA3-LABEL: test_fneg_fma_subx_y_negz_f32: | ||
; FMA3: # %bb.0: # %entry | ||
; FMA3-NEXT: vsubss %xmm1, %xmm0, %xmm0 | ||
; FMA3-NEXT: vfnmadd213ss {{.*#+}} xmm0 = -(xmm2 * xmm0) + xmm3 | ||
; FMA3-NEXT: retq | ||
; | ||
; FMA4-LABEL: test_fneg_fma_subx_y_negz_f32: | ||
; FMA4: # %bb.0: # %entry | ||
; FMA4-NEXT: vsubss %xmm1, %xmm0, %xmm0 | ||
; FMA4-NEXT: vfnmaddss %xmm3, %xmm2, %xmm0, %xmm0 | ||
; FMA4-NEXT: retq | ||
entry: | ||
%subx = fsub nsz float %w, %x | ||
%negz = fsub float -0.000000e+00, %z | ||
%0 = tail call nsz float @llvm.fma.f32(float %subx, float %y, float %negz) | ||
%1 = fsub float -0.000000e+00, %0 | ||
ret float %1 | ||
} | ||
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define float @test_fneg_fma_x_suby_negz_f32(float %w, float %x, float %y, float %z) { | ||
; FMA3-LABEL: test_fneg_fma_x_suby_negz_f32: | ||
; FMA3: # %bb.0: # %entry | ||
; FMA3-NEXT: vsubss %xmm2, %xmm0, %xmm0 | ||
; FMA3-NEXT: vfnmadd213ss {{.*#+}} xmm0 = -(xmm1 * xmm0) + xmm3 | ||
; FMA3-NEXT: retq | ||
; | ||
; FMA4-LABEL: test_fneg_fma_x_suby_negz_f32: | ||
; FMA4: # %bb.0: # %entry | ||
; FMA4-NEXT: vsubss %xmm2, %xmm0, %xmm0 | ||
; FMA4-NEXT: vfnmaddss %xmm3, %xmm0, %xmm1, %xmm0 | ||
; FMA4-NEXT: retq | ||
entry: | ||
%suby = fsub nsz float %w, %y | ||
%negz = fsub float -0.000000e+00, %z | ||
%0 = tail call nsz float @llvm.fma.f32(float %x, float %suby, float %negz) | ||
%1 = fsub float -0.000000e+00, %0 | ||
ret float %1 | ||
} | ||
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define float @test_fneg_fma_subx_suby_negz_f32(float %w, float %x, float %y, float %z) { | ||
; FMA3-LABEL: test_fneg_fma_subx_suby_negz_f32: | ||
; FMA3: # %bb.0: # %entry | ||
; FMA3-NEXT: vsubss %xmm1, %xmm0, %xmm1 | ||
; FMA3-NEXT: vsubss %xmm2, %xmm0, %xmm0 | ||
; FMA3-NEXT: vfnmadd213ss {{.*#+}} xmm0 = -(xmm1 * xmm0) + xmm3 | ||
; FMA3-NEXT: retq | ||
; | ||
; FMA4-LABEL: test_fneg_fma_subx_suby_negz_f32: | ||
; FMA4: # %bb.0: # %entry | ||
; FMA4-NEXT: vsubss %xmm1, %xmm0, %xmm1 | ||
; FMA4-NEXT: vsubss %xmm2, %xmm0, %xmm0 | ||
; FMA4-NEXT: vfnmaddss %xmm3, %xmm0, %xmm1, %xmm0 | ||
; FMA4-NEXT: retq | ||
entry: | ||
%subx = fsub nsz float %w, %x | ||
%suby = fsub nsz float %w, %y | ||
%negz = fsub float -0.000000e+00, %z | ||
%0 = tail call nsz float @llvm.fma.f32(float %subx, float %suby, float %negz) | ||
%1 = fsub float -0.000000e+00, %0 | ||
ret float %1 | ||
} | ||
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define float @test_fneg_fma_subx_negy_negz_f32(float %w, float %x, float %y, float %z) { | ||
; FMA3-LABEL: test_fneg_fma_subx_negy_negz_f32: | ||
; FMA3: # %bb.0: # %entry | ||
; FMA3-NEXT: vsubss %xmm1, %xmm0, %xmm0 | ||
; FMA3-NEXT: vfmadd213ss {{.*#+}} xmm0 = (xmm2 * xmm0) + xmm3 | ||
; FMA3-NEXT: retq | ||
; | ||
; FMA4-LABEL: test_fneg_fma_subx_negy_negz_f32: | ||
; FMA4: # %bb.0: # %entry | ||
; FMA4-NEXT: vsubss %xmm1, %xmm0, %xmm0 | ||
; FMA4-NEXT: vfmaddss %xmm3, %xmm2, %xmm0, %xmm0 | ||
; FMA4-NEXT: retq | ||
entry: | ||
%subx = fsub nsz float %w, %x | ||
%negy = fsub float -0.000000e+00, %y | ||
%negz = fsub float -0.000000e+00, %z | ||
%0 = tail call nsz float @llvm.fma.f32(float %subx, float %negy, float %negz) | ||
%1 = fsub float -0.000000e+00, %0 | ||
ret float %1 | ||
} | ||
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declare float @llvm.fma.f32(float, float, float) |