2007-10-01-PromoteSafeValue.ll   [plain text]

; RUN: llvm-as < %s | opt -licm | llvm-dis | grep promoted
; Promote value if at least one use is safe


define i32 @f2(i32* %p, i8* %q) {
entry:
        br label %loop.head

loop.head:              ; preds = %cond.true, %entry
        store i32 20, i32* %p
        %tmp3.i = icmp eq i8* null, %q            ; <i1> [#uses=1]
        br i1 %tmp3.i, label %exit, label %cond.true
        
cond.true:              ; preds = %loop.head
        store i32 40, i32* %p
        br label %loop.head

exit:           ; preds = %loop.head
        ret i32 0
}