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Added a load folding bug test case.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25472 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2006-01-20 01:12:23 +00:00
parent 76356d9594
commit 52b8b5982f
1 changed files with 15 additions and 0 deletions
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15
test/CodeGen/X86/2006-01-19-ISelFoldingBug.ll Normal file
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; RUN: llvm-as < %s | llc -march=x86 | grep 'shld' | wc -l | grep 1
;
; Check that the isel does not fold the shld, which already folds a load
; and has two uses, into a store.
%A = external global uint
uint %test5(uint %B, ubyte %C) {
%tmp.1 = load uint *%A;
%tmp.2 = shl uint %tmp.1, ubyte %C
%tmp.3 = sub ubyte 32, %C
%tmp.4 = shr uint %B, ubyte %tmp.3
%tmp.5 = or uint %tmp.4, %tmp.2
store uint %tmp.5, uint* %A
ret uint %tmp.5
}