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llvm-project/clang/test/CodeGenCXX/mangle-win64-ccs.cpp

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Mangle calling conventions into function pointer types where GCC does Summary: GCC 5.1 began mangling these Windows calling conventions into function types, since they can be used for overloading. They've always been mangled in the MS ABI, but they are new to the Itanium mangler. Note that the calling convention doesn't appear as part of the main declaration, it only appears on function parameter types and other types. Fixes PR39860 Reviewers: rjmccall, efriedma Subscribers: cfe-commits Differential Revision: https://reviews.llvm.org/D55672 llvm-svn: 349212
2018-12-15 07:42:59 +08:00
// RUN: %clang_cc1 -triple x86_64-windows-gnu -o - -emit-llvm %s | FileCheck %s -check-prefix CHECK-WIN
// RUN: %clang_cc1 -triple x86_64-linux-gnu -o - -emit-llvm %s | FileCheck %s -check-prefix CHECK-LIN
typedef __PTRDIFF_TYPE__ ptrdiff_t;
template <typename FTy> ptrdiff_t func_as_int(FTy *fp) { return ptrdiff_t(fp); }
int f_plain(int);
int __attribute__((sysv_abi)) f_sysvabi(int);
int __attribute__((ms_abi)) f_msabi(int);
ptrdiff_t useThem() {
ptrdiff_t rv = 0;
rv += func_as_int(f_plain);
rv += func_as_int(f_sysvabi);
rv += func_as_int(f_msabi);
return rv;
}
// CHECK-WIN: define dso_local i64 @_Z7useThemv()
// CHECK-WIN: call i64 @_Z11func_as_intIFiiEExPT_(i32 (i32)* @_Z7f_plaini)
// CHECK-WIN: call i64 @_Z11func_as_intIU8sysv_abiFiiEExPT_(i32 (i32)* @_Z9f_sysvabii)
// CHECK-WIN: call i64 @_Z11func_as_intIFiiEExPT_(i32 (i32)* @_Z7f_msabii)
[test] Add {{.*}} to make ELF tests immune to dso_local/dso_preemptable/(none) differences For a default visibility external linkage definition, dso_local is set for ELF -fno-pic/-fpie and COFF and Mach-O. Since default clang -cc1 for ELF is similar to -fpic ("PIC Level" is not set), this nuance causes unneeded binary format differences. To make emitted IR similar, ELF -cc1 -fpic will default to -fno-semantic-interposition, which sets dso_local for default visibility external linkage definitions. To make this flip smooth and enable future (dso_local as definition default), this patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} `.
2020-12-31 16:27:11 +08:00
// CHECK-LIN: define{{.*}} i64 @_Z7useThemv()
Mangle calling conventions into function pointer types where GCC does Summary: GCC 5.1 began mangling these Windows calling conventions into function types, since they can be used for overloading. They've always been mangled in the MS ABI, but they are new to the Itanium mangler. Note that the calling convention doesn't appear as part of the main declaration, it only appears on function parameter types and other types. Fixes PR39860 Reviewers: rjmccall, efriedma Subscribers: cfe-commits Differential Revision: https://reviews.llvm.org/D55672 llvm-svn: 349212
2018-12-15 07:42:59 +08:00
// CHECK-LIN: call i64 @_Z11func_as_intIFiiEElPT_(i32 (i32)* @_Z7f_plaini)
// CHECK-LIN: call i64 @_Z11func_as_intIFiiEElPT_(i32 (i32)* @_Z9f_sysvabii)
// CHECK-LIN: call i64 @_Z11func_as_intIU6ms_abiFiiEElPT_(i32 (i32)* @_Z7f_msabii)