diff --git a/llvm/test/Analysis/MemorySSA/phi-translation.ll b/llvm/test/Analysis/MemorySSA/phi-translation.ll index 7fa6e6c69057e..5e065a27baff4 100644 --- a/llvm/test/Analysis/MemorySSA/phi-translation.ll +++ b/llvm/test/Analysis/MemorySSA/phi-translation.ll @@ -474,3 +474,45 @@ cleanup: ; preds = %while.body, %while. declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) + +define void @another_loop_clobber() { +; CHECK-LABEL: void @another_loop_clobber +; CHECK-LABEL: loop.header: +; CHECK-NEXT: ; 4 = MemoryPhi({entry,1},{cond.read,3}) + +; CHECK-LABEL: cond.read: +; NOLIMIT: ; MemoryUse(liveOnEntry) +; LIMIT: ; MemoryUse(4) +; CHECK-NEXT: %use = load i32, i32* %ptr.1, align 4 +; CHECK-NEXT: ; 2 = MemoryDef(4) +; CHECK-NEXT: %c.2 = call i1 @cond(i32 %use) +; CHECK-NEXT: %ptr.10 = getelementptr inbounds [12 x i32], [12 x i32]* %nodeStack, i32 0, i32 %inc +; CHECK-NEXT: ; 3 = MemoryDef(2) +; CHECK-NEXT: store i32 10, i32* %ptr.2, align 4 + +entry: + %nodeStack = alloca [12 x i32], align 4 + %c.1 = call i1 @cond(i32 1) + br i1 %c.1, label %cleanup, label %loop.header + +loop.header: ; preds = %entry, %while.cond.backedge + %depth.1 = phi i32 [ %inc, %cond.read], [ 1, %entry ] + %cmp = icmp sgt i32 %depth.1, 0 + %inc = add nsw i32 %depth.1, 3 + %inc2 = add nsw i32 %depth.1, 6 + br i1 %cmp, label %cond.read, label %cleanup + +cond.read: ; preds = %while.cond + %ptr.1 = getelementptr inbounds [12 x i32], [12 x i32]* %nodeStack, i32 0, i32 %depth.1 + %ptr.2 = getelementptr inbounds [12 x i32], [12 x i32]* %nodeStack, i32 0, i32 %inc2 + %use = load i32, i32* %ptr.1, align 4 + %c.2 = call i1 @cond(i32 %use) + %ptr.10 = getelementptr inbounds [12 x i32], [12 x i32]* %nodeStack, i32 0, i32 %inc + store i32 10, i32* %ptr.2, align 4 + br i1 %c.2, label %loop.header, label %cleanup + +cleanup: + ret void +} + +declare i1 @cond(i32)