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llvm-mirror/test/Regression/CodeGen/X86/2006-01-19-ISelFoldingBug.ll
2006-12-02 04:23:10 +00:00

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457 B
LLVM

; RUN: llvm-upgrade < %s | llvm-as | 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
}