1 ; Test to make sure that stores in a diamond get merged with a non barrier load after the store instruction
2 ; Stores sunks into the footer.
3 ; RUN: opt -passes=mldst-motion -S < %s | FileCheck %s
4 target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
6 %struct.node = type { i32, ptr, ptr, ptr, i32, i32, i32, i32 }
8 ; Function Attrs: nounwind uwtable
9 define void @sink_store(ptr nocapture %r, i32 %index) {
11 %node.0.in16 = getelementptr inbounds %struct.node, ptr %r, i64 0, i32 2
12 %node.017 = load ptr, ptr %node.0.in16, align 8
13 %index.addr = alloca i32, align 4
14 store i32 %index, ptr %index.addr, align 4
15 %0 = load i32, ptr %index.addr, align 4
16 %cmp = icmp slt i32 %0, 0
17 br i1 %cmp, label %if.then, label %if.else
20 if.then: ; preds = %entry
21 %1 = load i32, ptr %index.addr, align 4
22 %p1 = getelementptr inbounds %struct.node, ptr %node.017, i32 0, i32 6
23 ; CHECK-NOT: store i32
24 store i32 %1, ptr %p1, align 4
25 %p2 = getelementptr inbounds %struct.node, ptr %node.017, i32 5, i32 6
26 ; CHECK: load i32, ptr
27 %not_barrier = load i32 , ptr %p2, align 4
31 if.else: ; preds = %entry
32 %2 = load i32, ptr %index.addr, align 4
33 %add = add nsw i32 %2, 1
34 %p3 = getelementptr inbounds %struct.node, ptr %node.017, i32 0, i32 6
35 ; CHECK-NOT: store i32
36 store i32 %add, ptr %p3, align 4
40 if.end: ; preds = %if.else, %if.then