82e5f951fd
In post-commit feedback on D104830 Jessica Clarke pointed out that unconditionally adding __va_list to the std namespace caused namespace debug info to be emitted in C, which is not only inappropriate but turned out to confuse the dtrace tool. Therefore, move __va_list back to std only in C++ so that the correct debug info is generated. We also considered moving __va_list to the top level unconditionally but this would contradict the specification and be visible to AST matchers and such, so make it conditional on the language mode. To avoid breaking name mangling for __va_list, teach the Itanium name mangler to always mangle it as if it were in the std namespace when targeting ARM architectures. This logic is not needed for the Microsoft name mangler because Microsoft platforms define va_list as a typedef of char *. Depends on D116773 Differential Revision: https://reviews.llvm.org/D116774
33 lines
2.8 KiB
C++
33 lines
2.8 KiB
C++
// RUN: %clang_cc1 -emit-llvm -std=c99 -x c %s -triple aarch64-linux -o - | FileCheck %s --check-prefix=AARCH64-C
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// RUN: %clang_cc1 -emit-llvm -std=c++17 -x c++ %s -triple aarch64-linux -o - | FileCheck %s --check-prefix=AARCH64-CXX
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// RUN: %clang_cc1 -emit-llvm -std=c99 -x c %s -triple x86_64-linux -o - | FileCheck %s --check-prefix=X86_64-C
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// RUN: %clang_cc1 -emit-llvm -std=c++17 -x c++ %s -triple x86_64-linux -o - | FileCheck %s --check-prefix=X86_64-CXX
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// RUN: %clang_cc1 -emit-llvm -std=c99 -x c %s -triple ppc64-linux -o - | FileCheck %s --check-prefix=PPC64-C
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// RUN: %clang_cc1 -emit-llvm -std=c++17 -x c++ %s -triple ppc64-linux -o - | FileCheck %s --check-prefix=PPC64-CXX
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// RUN: %clang_cc1 -emit-llvm -std=c99 -x c %s -triple armv7-apple-darwin9 -target-abi aapcs -o - | FileCheck %s --check-prefix=AAPCS-C
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// RUN: %clang_cc1 -emit-llvm -std=c++17 -x c++ %s -triple armv7-apple-darwin9 -target-abi aapcs -o - | FileCheck %s --check-prefix=AAPCS-CXX
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// RUN: %clang_cc1 -emit-llvm -std=c99 -x c %s -triple s390x-linux -o - | FileCheck %s --check-prefix=SYSTEMZ-C
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// RUN: %clang_cc1 -emit-llvm -std=c++17 -x c++ %s -triple s390x-linux -o - | FileCheck %s --check-prefix=SYSTEMZ-CXX
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// RUN: %clang_cc1 -emit-llvm -std=c99 -x c %s -triple i686-linux -o - | FileCheck %s --check-prefix=CHARPTR-C
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// RUN: %clang_cc1 -emit-llvm -std=c++17 -x c++ %s -triple i686-linux -o - | FileCheck %s --check-prefix=CHARPTR-CXX
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// RUN: %clang_cc1 -emit-llvm -std=c99 -x c %s -triple xcore -o - | FileCheck %s --check-prefix=VOIDPTR-C
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// RUN: %clang_cc1 -emit-llvm -std=c++17 -x c++ %s -triple xcore -o - | FileCheck %s --check-prefix=VOIDPTR-CXX
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#include <stdarg.h>
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// AARCH64-C: define {{.*}} @f(i32 noundef %n, %struct.__va_list* noundef %list)
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// AARCH64-CXX: define {{.*}} @_Z1fiSt9__va_list(i32 noundef %n, %"struct.std::__va_list"* noundef %list)
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// X86_64-C: define {{.*}} @f(i32 noundef %n, %struct.__va_list_tag* noundef %list)
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// X86_64-CXX: define {{.*}} @_Z1fiP13__va_list_tag(i32 noundef %n, %struct.__va_list_tag* noundef %list)
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// PPC64-C: define {{.*}} @f(i32 noundef signext %n, i8* noundef %list)
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// PPC64-CXX: define {{.*}} @_Z1fiPc(i32 noundef signext %n, i8* noundef %list)
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// AAPCS-C: define {{.*}} @f(i32 noundef %n, [1 x i32] %list.coerce)
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// AAPCS-CXX: define {{.*}} @_Z1fiSt9__va_list(i32 noundef %n, [1 x i32] %list.coerce)
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// SYSTEMZ-C: define {{.*}} @f(i32 noundef signext %n, %struct.__va_list_tag* noundef %list)
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// SYSTEMZ-CXX: define {{.*}} @_Z1fiP13__va_list_tag(i32 noundef signext %n, %struct.__va_list_tag* noundef %list)
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// CHARPTR-C: define {{.*}} @f(i32 noundef %n, i8* noundef %list)
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// CHARPTR-CXX: define {{.*}} @_Z1fiPc(i32 noundef %n, i8* noundef %list)
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// VOIDPTR-C: define {{.*}} @f(i32 noundef %n, i8* noundef %list)
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// VOIDPTR-CXX: define {{.*}} @_Z1fiPv(i32 noundef %n, i8* noundef %list)
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void f(int n, va_list list) {}
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