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| author | Akira Hatanaka <ahatanaka@apple.com> | 2019-06-14 22:06:28 +0000 |
|---|---|---|
| committer | Akira Hatanaka <ahatanaka@apple.com> | 2019-06-14 22:06:28 +0000 |
| commit | 6cb2d9dbd2d46ee1811f756d4b1f567b8ff36aa9 (patch) | |
| tree | ad9a46f1a38ce64d675f990cccee3f3ffceb15ec /clang/test/CodeGenObjC | |
| parent | 05e48cb9fabe58b2704fbca14530c844a9d2243d (diff) | |
| download | bcm5719-llvm-6cb2d9dbd2d46ee1811f756d4b1f567b8ff36aa9.tar.gz bcm5719-llvm-6cb2d9dbd2d46ee1811f756d4b1f567b8ff36aa9.zip | |
[CodeGen][ObjC] Annotate retain-agnostic ObjC globals with attribute
'objc_arc_inert'
The attribute enables the ARC optimizer to delete ObjC ARC runtime calls
on the annotated globals (see https://reviews.llvm.org/D62433). We
currently only annotate global variables for string literals and global
blocks with the attribute.
rdar://problem/49839633
Differential Revision: https://reviews.llvm.org/D62831
llvm-svn: 363467
Diffstat (limited to 'clang/test/CodeGenObjC')
| -rw-r--r-- | clang/test/CodeGenObjC/attr-objc-arc-inert.m | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/clang/test/CodeGenObjC/attr-objc-arc-inert.m b/clang/test/CodeGenObjC/attr-objc-arc-inert.m new file mode 100644 index 00000000000..eddccf54acd --- /dev/null +++ b/clang/test/CodeGenObjC/attr-objc-arc-inert.m @@ -0,0 +1,16 @@ +// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fblocks -emit-llvm -o - %s | FileCheck %s + +// CHECK: @{{.*}} = private global %{{.*}} { i32* getelementptr inbounds ([0 x i32], [0 x i32]* @__CFConstantStringClassReference, i32 0, i32 0), i32 1992, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @{{.*}}, i32 0, i32 0), i64 3 }, section "__DATA,__cfstring", align 8 #[[ATTRNUM0:[0-9]+]] +// CHECK: @{{.*}} = internal constant { i8**, i32, i32, i8*, %{{.*}}* } { i8** @_NSConcreteGlobalBlock, i32 1342177280, i32 0, i8* bitcast (i32 (i8*)* @{{.*}} to i8*), %{{.*}}* bitcast ({ i64, i64, i8*, i8* }* @{{.*}} to %{{.*}}*) }, align 8 #[[ATTRNUM0]] + +@class NSString; + +NSString *testStringLiteral(void) { + return @"abc"; +} + +int testGlobalBlock(int a) { + return ^{ return 123; }(); +} + +// CHECK: attributes #[[ATTRNUM0]] = { "objc_arc_inert" } |
