[llvm] r224248 - Added a test related to 224247 revision

[Elena Demikhovsky]

Author: delena
Date: Mon Dec 15 08:14:10 2014
New Revision: 224248

URL: http://llvm.org/viewvc/llvm-project?rev=224248&view=rev
Log:
Added a test related to 224247 revision

Added:
    llvm/trunk/test/Transforms/InstMerge/st_sink_barrier_call.ll

Added: llvm/trunk/test/Transforms/InstMerge/st_sink_barrier_call.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstMerge/st_sink_barrier_call.ll?rev=224248&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/InstMerge/st_sink_barrier_call.ll (added)
+++ llvm/trunk/test/Transforms/InstMerge/st_sink_barrier_call.ll Mon Dec 15 08:14:10 2014
@@ -0,0 +1,43 @@
+; Test to make sure that a function call that needs to be a barrier to sinking stores is indeed a barrier.
+; Stores sunks into the footer.
+; RUN: opt -basicaa -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 }
+
+declare i32 @foo(i32 %x)
+
+; Function Attrs: nounwind uwtable
+define void @sink_store(%struct.node* nocapture %r, i32 %index) {
+entry:
+  %node.0.in16 = getelementptr inbounds %struct.node* %r, i64 0, i32 2
+  %node.017 = load %struct.node** %node.0.in16, align 8
+  %index.addr = alloca i32, align 4
+  store i32 %index, i32* %index.addr, align 4
+  %0 = load 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* %index.addr, align 4
+  %p1 = getelementptr inbounds %struct.node* %node.017, i32 0, i32 6
+  ; CHECK: store i32
+  store i32 %1, i32* %p1, align 4
+  br label %if.end
+  
+; CHECK: if.else
+if.else:                                          ; preds = %entry
+  %2 = load i32* %index.addr, align 4
+  %add = add nsw i32 %2, 1
+  %p3 = getelementptr inbounds %struct.node* %node.017, i32 0, i32 6
+  ; CHECK: store i32
+  store i32 %add, i32* %p3, align 4
+  call i32 @foo(i32 5)				  ;barrier
+  br label %if.end
+
+; CHECK: if.end
+if.end:                                           ; preds = %if.else, %if.then
+; CHECK-NOT: store
+  ret void
+}