llvm-project/clang/test/CodeGenCXX/block-byref.cpp

// RUN: %clang_cc1 %s -fblocks -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - | FileCheck %s
// REQUIRES: x86-registered-target

// CHECK: @b ={{.*}} global i32 0,

// CHECK: define {{.*}}void @{{.*}}test{{.*}}_block_invoke(
// CHECK: store i32 2, i32* @b,
// CHECK: ret void

int b;

void test() {
  int &a = b;
  ^{ a = 2; };
}
[OPENMP][BLOCKS]Fix PR38923: reference to a global variable is captured by a block. Added checks for capturing of the variable in the block when trying to emit correct address for the variable with the reference type. This extra check allows correctly identify the variables that are not captured in the block context. llvm-svn: 340181 2018-08-20 16:00:22 +00:00			`// RUN: %clang_cc1 %s -fblocks -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - \| FileCheck %s`
			`// REQUIRES: x86-registered-target`

[test] Add {{.}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.}} `, (variable/constant/alias) `= ` with `={{.}} `, or inserts appropriate `{{.}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal. 2020-12-30 20:45:56 -08:00			`// CHECK: @b ={{.*}} global i32 0,`
[OPENMP][BLOCKS]Fix PR38923: reference to a global variable is captured by a block. Added checks for capturing of the variable in the block when trying to emit correct address for the variable with the reference type. This extra check allows correctly identify the variables that are not captured in the block context. llvm-svn: 340181 2018-08-20 16:00:22 +00:00
			`// CHECK: define {{.}}void @{{.}}test{{.*}}_block_invoke(`
			`// CHECK: store i32 2, i32* @b,`
			`// CHECK: ret void`

			`int b;`

			`void test() {`
			`int &a = b;`
			`^{ a = 2; };`
			`}`