diff options
Diffstat (limited to 'test')
-rw-r--r-- | test/CodeGen/X86/vec_shuf-insert.ll | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/test/CodeGen/X86/vec_shuf-insert.ll b/test/CodeGen/X86/vec_shuf-insert.ll new file mode 100644 index 0000000000..254fdbc15b --- /dev/null +++ b/test/CodeGen/X86/vec_shuf-insert.ll @@ -0,0 +1,28 @@ +; RUN: llc < %s -mtriple=x86_64-unknown-linux -mcpu=corei7-avx | FileCheck %s + +; These tests check that an insert_subvector which replaces one of the halves +; of a concat_vectors is optimized into a single vinsertf128. + +declare <8 x float> @llvm.x86.avx.vinsertf128.ps.256(<8 x float>, <4 x float>, i8) + +define <8 x float> @lower_half(<4 x float> %v1, <4 x float> %v2, <4 x float> %v3) { + %1 = shufflevector <4 x float> %v1, <4 x float> %v2, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7> + %2 = tail call <8 x float> @llvm.x86.avx.vinsertf128.ps.256(<8 x float> %1, <4 x float> %v3, i8 0) + ret <8 x float> %2 + +; CHECK-LABEL: lower_half +; CHECK-NOT: vinsertf128 +; CHECK: vinsertf128 $1, %xmm1, %ymm2, %ymm0 +; CHECK-NEXT: ret +} + +define <8 x float> @upper_half(<4 x float> %v1, <4 x float> %v2, <4 x float> %v3) { + %1 = shufflevector <4 x float> %v1, <4 x float> %v2, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7> + %2 = tail call <8 x float> @llvm.x86.avx.vinsertf128.ps.256(<8 x float> %1, <4 x float> %v3, i8 1) + ret <8 x float> %2 + +; CHECK-LABEL: upper_half +; CHECK-NOT: vinsertf128 +; CHECK: vinsertf128 $1, %xmm2, %ymm0, %ymm0 +; CHECK-NEXT: ret +} |