diff options
Diffstat (limited to 'llvm/test/CodeGen/X86/movddup-load-fold.ll')
| -rw-r--r-- | llvm/test/CodeGen/X86/movddup-load-fold.ll | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/movddup-load-fold.ll b/llvm/test/CodeGen/X86/movddup-load-fold.ll new file mode 100644 index 00000000000..a0e65fb892d --- /dev/null +++ b/llvm/test/CodeGen/X86/movddup-load-fold.ll @@ -0,0 +1,26 @@ +; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py +; RUN: llc < %s -mtriple=i686-- -mattr=+sse4.1 | FileCheck %s --check-prefixes=SSE,SSE41 +; RUN: llc < %s -mtriple=i686-- -mattr=+avx | FileCheck %s --check-prefixes=AVX,AVX1 +; RUN: llc < %s -mtriple=i686-- -mattr=+avx2 | FileCheck %s --check-prefixes=AVX,AVX2 +; RUN: llc < %s -mtriple=i686-- -mattr=+avx512vl | FileCheck %s --check-prefixes=AVX,AVX512VL + +; Test an isel pattern for a splatted VZLOAD. + +define <4 x float> @movddup_load_fold(float %x, float %y) { +; SSE-LABEL: movddup_load_fold: +; SSE: # %bb.0: +; SSE-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero +; SSE-NEXT: movddup {{.*#+}} xmm0 = xmm0[0,0] +; SSE-NEXT: retl +; +; AVX-LABEL: movddup_load_fold: +; AVX: # %bb.0: +; AVX-NEXT: vmovsd {{.*#+}} xmm0 = mem[0],zero +; AVX-NEXT: vmovddup {{.*#+}} xmm0 = xmm0[0,0] +; AVX-NEXT: retl + %i0 = insertelement <4 x float> zeroinitializer, float %x, i32 0 + %i1 = insertelement <4 x float> %i0, float %y, i32 1 + %dup = shufflevector <4 x float> %i1, <4 x float> undef, <4 x i32> <i32 0, i32 1, i32 0, i32 1> + ret <4 x float> %dup +} + |
