diff options
Diffstat (limited to 'llvm/test/CodeGen/X86/vector-shuffle-combining.ll')
| -rw-r--r-- | llvm/test/CodeGen/X86/vector-shuffle-combining.ll | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/vector-shuffle-combining.ll b/llvm/test/CodeGen/X86/vector-shuffle-combining.ll index 2541ea8d315..a2a29e5b894 100644 --- a/llvm/test/CodeGen/X86/vector-shuffle-combining.ll +++ b/llvm/test/CodeGen/X86/vector-shuffle-combining.ll @@ -2819,6 +2819,50 @@ define <4 x float> @combine_insertps4(<4 x float> %a, <4 x float> %b) { ret <4 x float> %d } +; FIXME: Failed to recognise that the VMOVSD has already zero'd the upper element +define void @combine_scalar_load_with_blend_with_zero(double* %a0, <4 x float>* %a1) { +; SSE2-LABEL: combine_scalar_load_with_blend_with_zero: +; SSE2: # BB#0: +; SSE2-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero +; SSE2-NEXT: xorps %xmm1, %xmm1 +; SSE2-NEXT: shufps {{.*#+}} xmm1 = xmm1[0,0],xmm0[3,0] +; SSE2-NEXT: shufps {{.*#+}} xmm0 = xmm0[0,1],xmm1[0,2] +; SSE2-NEXT: movaps %xmm0, (%rsi) +; SSE2-NEXT: retq +; +; SSSE3-LABEL: combine_scalar_load_with_blend_with_zero: +; SSSE3: # BB#0: +; SSSE3-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero +; SSSE3-NEXT: xorps %xmm1, %xmm1 +; SSSE3-NEXT: shufps {{.*#+}} xmm1 = xmm1[0,0],xmm0[3,0] +; SSSE3-NEXT: shufps {{.*#+}} xmm0 = xmm0[0,1],xmm1[0,2] +; SSSE3-NEXT: movaps %xmm0, (%rsi) +; SSSE3-NEXT: retq +; +; SSE41-LABEL: combine_scalar_load_with_blend_with_zero: +; SSE41: # BB#0: +; SSE41-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero +; SSE41-NEXT: xorpd %xmm1, %xmm1 +; SSE41-NEXT: blendpd {{.*#+}} xmm1 = xmm0[0],xmm1[1] +; SSE41-NEXT: movapd %xmm1, (%rsi) +; SSE41-NEXT: retq +; +; AVX-LABEL: combine_scalar_load_with_blend_with_zero: +; AVX: # BB#0: +; AVX-NEXT: vmovsd {{.*#+}} xmm0 = mem[0],zero +; AVX-NEXT: vxorpd %xmm1, %xmm1, %xmm1 +; AVX-NEXT: vblendpd {{.*#+}} xmm0 = xmm0[0],xmm1[1] +; AVX-NEXT: vmovapd %xmm0, (%rsi) +; AVX-NEXT: retq + %1 = load double, double* %a0, align 8 + %2 = insertelement <2 x double> undef, double %1, i32 0 + %3 = insertelement <2 x double> %2, double 0.000000e+00, i32 1 + %4 = bitcast <2 x double> %3 to <4 x float> + %5 = shufflevector <4 x float> %4, <4 x float> <float 0.000000e+00, float undef, float undef, float undef>, <4 x i32> <i32 0, i32 1, i32 4, i32 3> + store <4 x float> %5, <4 x float>* %a1, align 16 + ret void +} + define <4 x float> @PR22377(<4 x float> %a, <4 x float> %b) { ; SSE-LABEL: PR22377: ; SSE: # BB#0: # %entry |
