X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=test%2FTransforms%2FObjCARC%2Fgvn.ll;h=2d120e7345a5274c46b3f538ab1a920cfca01189;hb=40d542097aef5f334d870aa7a4c169ca1afc5763;hp=a828b5485f4c31ee3d8a2b5ade0ab40de3e24ef6;hpb=2c2e85536d5020db3f64ab73b56ebe1bfd9aeb73;p=oota-llvm.git

diff --git a/test/Transforms/ObjCARC/gvn.ll b/test/Transforms/ObjCARC/gvn.ll
index a828b5485f4..2d120e7345a 100644
--- a/test/Transforms/ObjCARC/gvn.ll
+++ b/test/Transforms/ObjCARC/gvn.ll
@@ -3,20 +3,39 @@
 @x = common global i8* null, align 8
 
 declare i8* @objc_retain(i8*)
+declare i32 @objc_sync_enter(i8*)
+declare i32 @objc_sync_exit(i8*)
 
 ; GVN should be able to eliminate this redundant load, with ARC-specific
 ; alias analysis.
 
-; CHECK: define i8* @foo(i32 %n)
+; CHECK: define i8* @test0(i32 %n)
 ; CHECK-NEXT: entry:
 ; CHECK-NEXT: %s = load i8** @x
 ; CHECK-NOT: load
 ; CHECK: ret i8* %s
 ; CHECK-NEXT: }
-define i8* @foo(i32 %n) nounwind {
+define i8* @test0(i32 %n) nounwind {
 entry:
   %s = load i8** @x
   %0 = tail call i8* @objc_retain(i8* %s) nounwind
   %t = load i8** @x
-  ret i8* %s
+  ret i8* %t
+}
+
+; GVN should not be able to eliminate this redundant load, with ARC-specific
+; alias analysis.
+
+; CHECK-LABEL: define i8* @test1(
+; CHECK: load
+; CHECK: load
+; CHECK: ret i8* %t
+; CHECK: }
+define i8* @test1(i32 %n) nounwind {
+entry:
+  %s = load i8** @x
+  %0 = call i32 @objc_sync_enter(i8* %s)
+  %t = load i8** @x
+  %1 = call i32 @objc_sync_exit(i8* %s)
+  ret i8* %t
 }