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Diffstat (limited to 'test/CodeGen/X86/selectiondag-crash.ll')
| -rw-r--r-- | test/CodeGen/X86/selectiondag-crash.ll | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/test/CodeGen/X86/selectiondag-crash.ll b/test/CodeGen/X86/selectiondag-crash.ll new file mode 100644 index 0000000..9978902 --- /dev/null +++ b/test/CodeGen/X86/selectiondag-crash.ll @@ -0,0 +1,15 @@ +; RUN: llc -mtriple=x86_64-unknown-unknown -mcpu=corei7 < %s + +; Check that llc doesn't crash in the attempt to fold a shuffle with +; a splat mask into a constant build_vector. + +define <8 x i8> @autogen_SD26299(i8) { +BB: + %Shuff = shufflevector <8 x i32> <i32 -1, i32 -1, i32 -1, i32 -1, i32 -1, i32 -1, i32 -1, i32 -1>, <8 x i32> zeroinitializer, <8 x i32> <i32 2, i32 undef, i32 6, i32 8, i32 undef, i32 12, i32 14, i32 0> + %Shuff14 = shufflevector <8 x i32> %Shuff, <8 x i32> %Shuff, <8 x i32> <i32 7, i32 9, i32 11, i32 undef, i32 undef, i32 1, i32 3, i32 5> + %Shuff35 = shufflevector <8 x i32> %Shuff14, <8 x i32> %Shuff, <8 x i32> <i32 undef, i32 1, i32 3, i32 5, i32 7, i32 9, i32 11, i32 13> + %I42 = insertelement <8 x i32> %Shuff35, i32 88608, i32 0 + %Shuff48 = shufflevector <8 x i32> %Shuff35, <8 x i32> %I42, <8 x i32> <i32 4, i32 6, i32 8, i32 10, i32 12, i32 14, i32 0, i32 2> + %Tr59 = trunc <8 x i32> %Shuff48 to <8 x i8> + ret <8 x i8> %Tr59 +} |