6b3351792c
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.
21 lines
952 B
Objective-C
21 lines
952 B
Objective-C
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -fobjc-runtime-has-weak -o - %s | FileCheck %s
|
|
|
|
__attribute((objc_root_class)) @interface A @end
|
|
@interface B : A @end
|
|
|
|
// rdar://problem/23559789
|
|
// Ensure that type differences don't cause an assert here.
|
|
void test0(__weak B **src) {
|
|
__weak A *dest = *src;
|
|
}
|
|
// CHECK-LABEL: define{{.*}} void @test0
|
|
// CHECK: [[SRC:%.*]] = alloca [[B:%.*]]**, align 8
|
|
// CHECK: [[DEST:%.*]] = alloca [[A:%.*]]*, align 8
|
|
// CHECK: [[T0:%.*]] = load [[B]]**, [[B]]*** [[SRC]], align 8
|
|
// CHECK-NEXT: [[T1:%.*]] = bitcast [[B]]** [[T0]] to [[A]]**
|
|
// CHECK-NEXT: [[T2:%.*]] = bitcast [[A]]** [[DEST]] to i8**
|
|
// CHECK-NEXT: [[T3:%.*]] = bitcast [[A]]** [[T1]] to i8**
|
|
// CHECK-NEXT: call void @llvm.objc.copyWeak(i8** [[T2]], i8** [[T3]])
|
|
// CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]** [[DEST]] to i8**
|
|
// CHECK: call void @llvm.objc.destroyWeak(i8** [[T0]])
|