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llvm-project/clang/test/CodeGenObjCXX/block-default-arg.mm

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[OpaquePtrs][Clang] Add -no-opaque-pointers to tests (NFC) This adds -no-opaque-pointers to clang tests whose output will change when opaque pointers are enabled by default. This is intended to be part of the migration approach described in https://discourse.llvm.org/t/enabling-opaque-pointers-by-default/61322/9. The patch has been produced by replacing %clang_cc1 with %clang_cc1 -no-opaque-pointers for tests that fail with opaque pointers enabled. Worth noting that this doesn't cover all tests, there's a remaining ~40 tests not using %clang_cc1 that will need a followup change. Differential Revision: https://reviews.llvm.org/D123115
2022-04-07 18:03:55 +08:00
// RUN: %clang_cc1 -no-opaque-pointers -triple x86_64-apple-darwin10.0.0 -emit-llvm -o - %s -std=c++11 -fblocks -fobjc-arc | FileCheck %s
[CodeGenObjCXX] Don't rematerialize default arguments of function parameters in the body of a block. This fixes a bug where clang would materialize the default argument inside the body of a block instead of passing the value via the block descriptor. For example, in the code below, foo1 would always print 42 regardless of the value of argument "a" passed to foo1. void foo1(const int a = 42 ) { auto block = ^{ printf("%d\n", a); }; block(); } rdar://problem/24449235 llvm-svn: 268314
2016-05-03 05:52:57 +08:00
[Clang/Test]: Rename enable_noundef_analysis to disable-noundef-analysis and turn it off by default Turning on `enable_noundef_analysis` flag allows better codegen by removing freeze instructions. I modified clang by renaming `enable_noundef_analysis` flag to `disable-noundef-analysis` and turning it off by default. Test updates are made as a separate patch: D108453 Reviewed By: eugenis Differential Revision: https://reviews.llvm.org/D105169
2022-01-16 17:53:11 +08:00
// CHECK: define internal void @___Z16test_default_argi_block_invoke(i8* noundef %[[BLOCK_DESCRIPTOR:.*]])
[CodeGenObjCXX] Don't rematerialize default arguments of function parameters in the body of a block. This fixes a bug where clang would materialize the default argument inside the body of a block instead of passing the value via the block descriptor. For example, in the code below, foo1 would always print 42 regardless of the value of argument "a" passed to foo1. void foo1(const int a = 42 ) { auto block = ^{ printf("%d\n", a); }; block(); } rdar://problem/24449235 llvm-svn: 268314
2016-05-03 05:52:57 +08:00
// CHECK: %[[BLOCK:.*]] = bitcast i8* %[[BLOCK_DESCRIPTOR]] to <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i32 }>*
// CHECK: %[[BLOCK_CAPTURE_ADDR:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i32 }>, <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i32 }>* %[[BLOCK]], i32 0, i32 5
// CHECK: %[[V0:.*]] = load i32, i32* %[[BLOCK_CAPTURE_ADDR]]
[Clang/Test]: Rename enable_noundef_analysis to disable-noundef-analysis and turn it off by default Turning on `enable_noundef_analysis` flag allows better codegen by removing freeze instructions. I modified clang by renaming `enable_noundef_analysis` flag to `disable-noundef-analysis` and turning it off by default. Test updates are made as a separate patch: D108453 Reviewed By: eugenis Differential Revision: https://reviews.llvm.org/D105169
2022-01-16 17:53:11 +08:00
// CHECK: call void @_Z4foo1i(i32 noundef %[[V0]])
[CodeGenObjCXX] Don't rematerialize default arguments of function parameters in the body of a block. This fixes a bug where clang would materialize the default argument inside the body of a block instead of passing the value via the block descriptor. For example, in the code below, foo1 would always print 42 regardless of the value of argument "a" passed to foo1. void foo1(const int a = 42 ) { auto block = ^{ printf("%d\n", a); }; block(); } rdar://problem/24449235 llvm-svn: 268314
2016-05-03 05:52:57 +08:00
void foo1(int);
void test_default_arg(const int a = 42) {
auto block = ^{
foo1(a);
};
block();
}