diff options
| -rw-r--r-- | llvm/test/CodeGen/X86/vec_fneg.ll | 32 |
1 files changed, 29 insertions, 3 deletions
diff --git a/llvm/test/CodeGen/X86/vec_fneg.ll b/llvm/test/CodeGen/X86/vec_fneg.ll index 26c233f7db2..e9dc88ea433 100644 --- a/llvm/test/CodeGen/X86/vec_fneg.ll +++ b/llvm/test/CodeGen/X86/vec_fneg.ll @@ -99,15 +99,15 @@ define <2 x float> @fneg_bitcast(i64 %i) nounwind { ret <2 x float> %fneg } -define <4 x float> @undef_elts_v4f32(<4 x float> %x) { -; X32-SSE-LABEL: undef_elts_v4f32: +define <4 x float> @fneg_undef_elts_v4f32(<4 x float> %x) { +; X32-SSE-LABEL: fneg_undef_elts_v4f32: ; X32-SSE: # %bb.0: ; X32-SSE-NEXT: movaps {{.*#+}} xmm1 = <-0,u,u,-0> ; X32-SSE-NEXT: subps %xmm0, %xmm1 ; X32-SSE-NEXT: movaps %xmm1, %xmm0 ; X32-SSE-NEXT: retl ; -; X64-SSE-LABEL: undef_elts_v4f32: +; X64-SSE-LABEL: fneg_undef_elts_v4f32: ; X64-SSE: # %bb.0: ; X64-SSE-NEXT: movaps {{.*#+}} xmm1 = <-0,u,u,-0> ; X64-SSE-NEXT: subps %xmm0, %xmm1 @@ -117,3 +117,29 @@ define <4 x float> @undef_elts_v4f32(<4 x float> %x) { ret <4 x float> %r } +; This isn't fneg, but similarly check that (X - 0.0) is simplified. + +define <4 x float> @fsub0_undef_elts_v4f32(<4 x float> %x) { +; X32-SSE1-LABEL: fsub0_undef_elts_v4f32: +; X32-SSE1: # %bb.0: +; X32-SSE1-NEXT: retl +; +; X32-SSE2-LABEL: fsub0_undef_elts_v4f32: +; X32-SSE2: # %bb.0: +; X32-SSE2-NEXT: xorps %xmm1, %xmm1 +; X32-SSE2-NEXT: subps %xmm1, %xmm0 +; X32-SSE2-NEXT: retl +; +; X64-SSE1-LABEL: fsub0_undef_elts_v4f32: +; X64-SSE1: # %bb.0: +; X64-SSE1-NEXT: retq +; +; X64-SSE2-LABEL: fsub0_undef_elts_v4f32: +; X64-SSE2: # %bb.0: +; X64-SSE2-NEXT: xorps %xmm1, %xmm1 +; X64-SSE2-NEXT: subps %xmm1, %xmm0 +; X64-SSE2-NEXT: retq + %r = fsub <4 x float> %x, <float 0.0, float undef, float 0.0, float undef> + ret <4 x float> %r +} + |
