diff options
Diffstat (limited to 'llvm/test')
| -rw-r--r-- | llvm/test/Transforms/ObjCARC/gvn.ll | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/llvm/test/Transforms/ObjCARC/gvn.ll b/llvm/test/Transforms/ObjCARC/gvn.ll index 8d9b1bb84b8..1c55ee5c8ab 100644 --- a/llvm/test/Transforms/ObjCARC/gvn.ll +++ b/llvm/test/Transforms/ObjCARC/gvn.ll @@ -3,6 +3,8 @@ @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. @@ -20,3 +22,20 @@ entry: %t = load i8** @x ret i8* %t } + +; GVN should not be able to eliminate this redundant load, with ARC-specific +; alias analysis. + +; CHECK: 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 +} |
