diff options
| -rw-r--r-- | llvm/test/CodeGen/X86/fma-fneg-combine-2.ll | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/fma-fneg-combine-2.ll b/llvm/test/CodeGen/X86/fma-fneg-combine-2.ll index cf33c0c..3aadee8 100644 --- a/llvm/test/CodeGen/X86/fma-fneg-combine-2.ll +++ b/llvm/test/CodeGen/X86/fma-fneg-combine-2.ll @@ -86,6 +86,28 @@ entry: ret float %1 } +define <4 x float> @test_fma_rcp_fneg_v4f32(<4 x float> %x, <4 x float> %y, <4 x float> %z) { +; FMA3-LABEL: test_fma_rcp_fneg_v4f32: +; FMA3: # %bb.0: # %entry +; FMA3-NEXT: vxorps {{.*}}(%rip), %xmm2, %xmm2 +; FMA3-NEXT: vrcpps %xmm2, %xmm2 +; FMA3-NEXT: vfmadd213ps {{.*#+}} xmm0 = (xmm1 * xmm0) + xmm2 +; FMA3-NEXT: retq +; +; FMA4-LABEL: test_fma_rcp_fneg_v4f32: +; FMA4: # %bb.0: # %entry +; FMA4-NEXT: vxorps {{.*}}(%rip), %xmm2, %xmm2 +; FMA4-NEXT: vrcpps %xmm2, %xmm2 +; FMA4-NEXT: vfmaddps %xmm2, %xmm1, %xmm0, %xmm0 +; FMA4-NEXT: retq +entry: + %0 = fneg <4 x float> %z + %1 = tail call <4 x float> @llvm.x86.sse.rcp.ps(<4 x float> %0) + %2 = tail call nsz <4 x float> @llvm.fma.v4f32(<4 x float> %x, <4 x float> %y, <4 x float> %1) + ret <4 x float> %2 +} +declare <4 x float> @llvm.x86.sse.rcp.ps(<4 x float>) + ; This would crash while trying getNegatedExpression(). define float @negated_constant(float %x) { @@ -107,3 +129,4 @@ define float @negated_constant(float %x) { } declare float @llvm.fma.f32(float, float, float) +declare <4 x float> @llvm.fma.v4f32(<4 x float>, <4 x float>, <4 x float>) |