1 ; Test to make sure that load from the same address as a store and appears after the store prevents the store from being sunk
2 ; RUN: opt -basicaa -memdep -mldst-motion -S < %s | FileCheck %s
3 target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
5 %struct.node = type { i32, %struct.node*, %struct.node*, %struct.node*, i32, i32, i32, i32 }
7 ; Function Attrs: nounwind uwtable
8 define void @sink_store(%struct.node* nocapture %r, i32 %index) {
10 %node.0.in16 = getelementptr inbounds %struct.node, %struct.node* %r, i64 0, i32 2
11 %node.017 = load %struct.node*, %struct.node** %node.0.in16, align 8
12 %index.addr = alloca i32, align 4
13 store i32 %index, i32* %index.addr, align 4
14 %0 = load i32, i32* %index.addr, align 4
15 %cmp = icmp slt i32 %0, 0
16 br i1 %cmp, label %if.then, label %if.else
19 if.then: ; preds = %entry
20 %1 = load i32, i32* %index.addr, align 4
21 %p1 = getelementptr inbounds %struct.node, %struct.node* %node.017, i32 0, i32 6
23 store i32 %1, i32* %p1, align 4
24 %p2 = getelementptr inbounds %struct.node, %struct.node* %node.017, i32 0, i32 6
25 ; CHECK: load i32, i32*
26 %barrier = load i32 , i32 * %p2, align 4
30 if.else: ; preds = %entry
31 %2 = load i32, i32* %index.addr, align 4
32 %add = add nsw i32 %2, 1
33 %p3 = getelementptr inbounds %struct.node, %struct.node* %node.017, i32 0, i32 6
35 store i32 %add, i32* %p3, align 4
39 if.end: ; preds = %if.else, %if.then