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Test case for PR770

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28198 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2006-05-09 06:48:12 +00:00
parent e73701df94
commit 5255b39b21
1 changed files with 22 additions and 0 deletions
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test/CodeGen/X86/2006-05-08-CoalesceSubRegClass.ll Normal file
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; 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
}