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llvm-project/clang/test/CodeGenObjC/attr-exception.m

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Use the actual class visibility for the ObjC EHTYPE global, not the global visibility mode. Noticed by inspection. llvm-svn: 175479
2013-02-19 09:57:29 +08:00
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fexceptions -fobjc-exceptions -o - %s | FileCheck %s
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fexceptions -fobjc-exceptions -fvisibility hidden -o - %s | FileCheck -check-prefix=CHECK-HIDDEN %s
__attribute__((objc_root_class))
@interface Root {
Class isa;
}
@end
__attribute__((objc_exception))
@interface A : Root
@end
@implementation A
@end
[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.
2020-12-31 12:45:56 +08:00
// CHECK: @"OBJC_EHTYPE_$_A" ={{.*}} global {{%.*}} { i8** getelementptr inbounds (i8*, i8** @objc_ehtype_vtable, i32 2)
[CodeGen] Compute the objc EH vtable address point using inbounds GEP. The object is provided by the objc runtime and is never visible in the module itself, but even so, the address point we compute points into it, and "+16" is guaranteed not to overflow. This matches the c++ vtable IRGen. Note that I'm not entirely convinced the 'i8*' type is correct here: at the IR level, we're accessing memory that's outside the global object. But we don't control the allocation, so it's not obviously wrong either. But either way, this is only in a global initializer, so I don't think it's going to be mucked with. Filed PR35352 to discuss that. llvm-svn: 318545
2017-11-18 03:46:47 +08:00
// CHECK-HIDDEN: @"OBJC_EHTYPE_$_A" = hidden global {{%.*}} { i8** getelementptr inbounds (i8*, i8** @objc_ehtype_vtable, i32 2)
Use the actual class visibility for the ObjC EHTYPE global, not the global visibility mode. Noticed by inspection. llvm-svn: 175479
2013-02-19 09:57:29 +08:00
__attribute__((objc_exception))
__attribute__((visibility("default")))
@interface B : Root
@end
@implementation B
@end
[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.
2020-12-31 12:45:56 +08:00
// CHECK: @"OBJC_EHTYPE_$_B" ={{.*}} global {{%.*}} { i8** getelementptr inbounds (i8*, i8** @objc_ehtype_vtable, i32 2)
// CHECK-HIDDEN: @"OBJC_EHTYPE_$_B" ={{.*}} global {{%.*}} { i8** getelementptr inbounds (i8*, i8** @objc_ehtype_vtable, i32 2)