| ; Test to make sure that stores in a diamond get merged with a non barrier load after the store instruction |
| ; Stores sunks into the footer. |
| ; RUN: opt -basic-aa -memdep -mldst-motion -S < %s | FileCheck %s |
| target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128" |
| |
| %struct.node = type { i32, %struct.node*, %struct.node*, %struct.node*, i32, i32, i32, i32 } |
| |
| ; Function Attrs: nounwind uwtable |
| define void @sink_store(%struct.node* nocapture %r, i32 %index) { |
| entry: |
| %node.0.in16 = getelementptr inbounds %struct.node, %struct.node* %r, i64 0, i32 2 |
| %node.017 = load %struct.node*, %struct.node** %node.0.in16, align 8 |
| %index.addr = alloca i32, align 4 |
| store i32 %index, i32* %index.addr, align 4 |
| %0 = load i32, i32* %index.addr, align 4 |
| %cmp = icmp slt i32 %0, 0 |
| br i1 %cmp, label %if.then, label %if.else |
| |
| ; CHECK: if.then |
| if.then: ; preds = %entry |
| %1 = load i32, i32* %index.addr, align 4 |
| %p1 = getelementptr inbounds %struct.node, %struct.node* %node.017, i32 0, i32 6 |
| ; CHECK-NOT: store i32 |
| store i32 %1, i32* %p1, align 4 |
| %p2 = getelementptr inbounds %struct.node, %struct.node* %node.017, i32 5, i32 6 |
| ; CHECK: load i32, i32* |
| %not_barrier = load i32 , i32 * %p2, align 4 |
| br label %if.end |
| |
| ; CHECK: if.else |
| if.else: ; preds = %entry |
| %2 = load i32, i32* %index.addr, align 4 |
| %add = add nsw i32 %2, 1 |
| %p3 = getelementptr inbounds %struct.node, %struct.node* %node.017, i32 0, i32 6 |
| ; CHECK-NOT: store i32 |
| store i32 %add, i32* %p3, align 4 |
| br label %if.end |
| |
| ; CHECK: if.end |
| if.end: ; preds = %if.else, %if.then |
| ; CHECK: store |
| ret void |
| } |