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| -rw-r--r-- | test/CodeGen/X86/2006-05-08-CoalesceSubRegClass.ll | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2006-05-08-CoalesceSubRegClass.ll b/test/CodeGen/X86/2006-05-08-CoalesceSubRegClass.ll new file mode 100644 index 0000000000..35efceed7c --- /dev/null +++ b/test/CodeGen/X86/2006-05-08-CoalesceSubRegClass.ll @@ -0,0 +1,22 @@ +; Coalescing from R32 to a subset R32_. Once another register coalescer bug is +; fixed, the movb should go away as well. + +; RUN: llvm-as < %s | llc -march=x86 -relocation-model=static | grep 'movl' | wc -l + +%B = external global uint +%C = external global ushort* + +void %test(uint %A) { + %A = cast uint %A to ubyte + %tmp2 = load uint* %B + %tmp3 = and ubyte %A, 16 + %tmp4 = shl uint %tmp2, ubyte %tmp3 + store uint %tmp4, uint* %B + %tmp6 = shr uint %A, ubyte 3 + %tmp = load ushort** %C + %tmp8 = cast ushort* %tmp to uint + %tmp9 = add uint %tmp8, %tmp6 + %tmp9 = cast uint %tmp9 to ushort* + store ushort* %tmp9, ushort** %C + ret void +} |