llvm.org GIT mirror llvm / release_20 test / CodeGen / X86 / 2006-01-19-ISelFoldingBug.ll
release_20

Tree @release_20 (Download .tar.gz)

2006-01-19-ISelFoldingBug.ll @release_20raw · history · blame

; RUN: llvm-upgrade < %s | llvm-as | llc -march=x86 | \
; RUN:   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
}