diff options
Diffstat (limited to 'llvm/test/CodeGen/X86/combine-or.ll')
| -rw-r--r-- | llvm/test/CodeGen/X86/combine-or.ll | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/combine-or.ll b/llvm/test/CodeGen/X86/combine-or.ll index ff807b98717..df3b9015add 100644 --- a/llvm/test/CodeGen/X86/combine-or.ll +++ b/llvm/test/CodeGen/X86/combine-or.ll @@ -266,4 +266,16 @@ define <2 x i64> @test21(<2 x i64> %a, <2 x i64> %b) { ; CHECK-NEXT: pslldq ; CHECK-NEXT: ret +; Verify that the DAGCombiner doesn't crash in the attempt to check if a shuffle +; with illegal type has a legal mask. Method 'isShuffleMaskLegal' only knows how to +; handle legal vector value types. +define <4 x i8> @test_crash(<4 x i8> %a, <4 x i8> %b) { + %shuf1 = shufflevector <4 x i8> %a, <4 x i8> zeroinitializer, <4 x i32><i32 4, i32 4, i32 2, i32 3> + %shuf2 = shufflevector <4 x i8> %b, <4 x i8> zeroinitializer, <4 x i32><i32 0, i32 1, i32 4, i32 4> + %or = or <4 x i8> %shuf1, %shuf2 + ret <4 x i8> %or +} +; CHECK-LABEL: test_crash +; CHECK: movsd +; CHECK: ret |
