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llvm-project/clang/test/CodeGenObjC/arc-unoptimized-byref-var.m

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objective-C arc: in copy helper function for __strong __block variables, perform objc_storeStrong on source and destination instead of direct move. This is done with -O0 and to improve some analysis. // rdar://12530881 llvm-svn: 171555
2013-01-05 07:32:24 +08:00
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -fobjc-runtime-has-weak -o - %s | FileCheck -check-prefix=CHECK-UNOPT %s
// rdar://12530881
void test19() {
__block id x;
Distinguish `__block` variables that are captured by escaping blocks from those that aren't. This patch changes the way __block variables that aren't captured by escaping blocks are handled: - Since non-escaping blocks on the stack never get copied to the heap (see https://reviews.llvm.org/D49303), Sema shouldn't error out when the type of a non-escaping __block variable doesn't have an accessible copy constructor. - IRGen doesn't have to use the specialized byref structure (see https://clang.llvm.org/docs/Block-ABI-Apple.html#id8) for a non-escaping __block variable anymore. Instead IRGen can emit the variable as a normal variable and copy the reference to the block literal. Byref copy/dispose helpers aren't needed either. This reapplies r343518 after fixing a use-after-free bug in function Sema::ActOnBlockStmtExpr where the BlockScopeInfo was dereferenced after it was popped and deleted. rdar://problem/39352313 Differential Revision: https://reviews.llvm.org/D51564 llvm-svn: 343542
2018-10-02 05:51:28 +08:00
^{ (void)x; };
CHECK-LABEL-ify some code gen tests to improve diagnostic experience when tests fail. llvm-svn: 188447
2013-08-15 14:47:53 +08:00
// CHECK-UNOPT-LABEL: define internal void @__Block_byref_object_copy
Update Clang tests to handle explicitly typed gep changes in LLVM. llvm-svn: 230783
2015-02-28 03:18:17 +08:00
// CHECK-UNOPT: [[X:%.*]] = getelementptr inbounds [[BYREF_T:%.*]], [[BYREF_T:%.*]]* [[VAR:%.*]], i32 0, i32 6
// CHECK-UNOPT: [[X2:%.*]] = getelementptr inbounds [[BYREF_T:%.*]], [[BYREF_T:%.*]]* [[VAR1:%.*]], i32 0, i32 6
Update Clang tests to handle explicitly typed load changes in LLVM. llvm-svn: 230795
2015-02-28 05:19:58 +08:00
// CHECK-UNOPT-NEXT: [[SIX:%.*]] = load i8*, i8** [[X2]], align 8
In my last patch initialize the destination to null (with a simple store) before doing a storeStrong to it. // rdar://12530881 llvm-svn: 171572
2013-01-05 08:32:13 +08:00
// CHECK-UNOPT-NEXT: store i8* null, i8** [[X]], align 8
Update to use references to attribute groups instead of listing the attributes on the call/invoke instructions. llvm-svn: 175878
2013-02-22 17:10:20 +08:00
// CHECK-UNOPT-NEXT: call void @objc_storeStrong(i8** [[X]], i8* [[SIX]]) [[NUW:#[0-9]+]]
// CHECK-UNOPT-NEXT: call void @objc_storeStrong(i8** [[X2]], i8* null) [[NUW]]
objective-C arc: in copy helper function for __strong __block variables, perform objc_storeStrong on source and destination instead of direct move. This is done with -O0 and to improve some analysis. // rdar://12530881 llvm-svn: 171555
2013-01-05 07:32:24 +08:00
// CHECK-UNOPT-NEXT: ret void
}
Update to use references to attribute groups instead of listing the attributes on the call/invoke instructions. llvm-svn: 175878
2013-02-22 17:10:20 +08:00
// CHECK: attributes [[NUW]] = { nounwind }