// If we had a phi translation failure, we'll have a single entry which is a
// clobber in the current block. Reject this early.
- if (Deps.size() == 1 && Deps[0].getResult().isClobber()) {
+ if (Deps.size() == 1 && Deps[0].getResult().isClobber() &&
+ Deps[0].getResult().getInst()->getParent() == LI->getParent()) {
DEBUG(
dbgs() << "GVN: non-local load ";
WriteAsOperand(dbgs(), LI);
}
+; Cross block partial alias case.
+define i32 @load_load_partial_alias_cross_block(i8* %P) nounwind ssp {
+entry:
+ %xx = bitcast i8* %P to i32*
+ %x1 = load i32* %xx, align 4
+ %cmp = icmp eq i32 %x1, 127
+ br i1 %cmp, label %land.lhs.true, label %if.end
+
+land.lhs.true: ; preds = %entry
+ %arrayidx4 = getelementptr inbounds i8* %P, i64 1
+ %tmp5 = load i8* %arrayidx4, align 1
+ %conv6 = zext i8 %tmp5 to i32
+ ret i32 %conv6
+
+if.end:
+ ret i32 52
+; CHECK: @load_load_partial_alias_cross_block
+; CHECK: land.lhs.true:
+; CHECK-NOT: load i8
+; CHECK: ret i32 %conv6
+}
+
+
-; RUN: opt < %s -gvn -simplifycfg \
-; RUN: -disable-output
+; RUN: opt < %s -gvn -simplifycfg -disable-output
; PR867
-; END.
target datalayout = "E-p:32:32"
target triple = "powerpc-apple-darwin8"