Author: Fangrui Song Date: 2024-04-16T11:05:45-07:00 New Revision: 1c2afbae9af22b58190c10e3517242d01d89d612
URL: https://github.com/llvm/llvm-project/commit/1c2afbae9af22b58190c10e3517242d01d89d612 DIFF: https://github.com/llvm/llvm-project/commit/1c2afbae9af22b58190c10e3517242d01d89d612.diff LOG: [CodeGen,test] Test llvm-libc style alias attribute with UsingShadowDecl The pattern is quite involved and deserves a specific codegen test. This test would catch the bug in the first attempt of #87130 Added: Modified: clang/test/CodeGen/alias.cpp Removed: ################################################################################ diff --git a/clang/test/CodeGen/alias.cpp b/clang/test/CodeGen/alias.cpp index 17c1e1ae32f035..a468c31d369ed0 100644 --- a/clang/test/CodeGen/alias.cpp +++ b/clang/test/CodeGen/alias.cpp @@ -1,27 +1,42 @@ -// RUN: %clang_cc1 -triple x86_64-linux -verify -emit-llvm-only %s -// RUN: not %clang_cc1 -triple x86_64-linux -emit-llvm-only -fdiagnostics-parseable-fixits %s 2>&1 | FileCheck %s +// RUN: %clang_cc1 -triple x86_64-linux -verify -emit-llvm-only -DERR %s +// RUN: not %clang_cc1 -triple x86_64-linux -emit-llvm-only -fdiagnostics-parseable-fixits -DERR %s 2>&1 | FileCheck %s --check-prefix=FIXIT +// RUN: %clang_cc1 -triple x86_64-linux -emit-llvm %s -o - | FileCheck %s +#ifdef ERR void *f1_ifunc(void) { return nullptr; } void f1(void) __attribute__((alias("f1_ifunc"))); // expected-error@-1 {{alias must point to a defined variable or function}} // expected-note@-2 {{must refer to its mangled name}} // expected-note@-3 {{function by that name is mangled as}} -// CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:30-[[@LINE-4]]:47}:"alias(\"_Z8f1_ifuncv\")" +// FIXIT: fix-it:"{{.*}}":{[[@LINE-4]]:30-[[@LINE-4]]:47}:"alias(\"_Z8f1_ifuncv\")" void *f6_resolver_resolver(void) { return 0; } void *f6_resolver(void) __attribute__((alias("f6_resolver_resolver"))); // expected-error@-1 {{alias must point to a defined variable or function}} // expected-note@-2 {{must refer to its mangled name}} // expected-note@-3 {{function by that name is mangled as}} -// CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:40-[[@LINE-4]]:69}:"alias(\"_Z20f6_resolver_resolverv\")" +// FIXIT: fix-it:"{{.*}}":{[[@LINE-4]]:40-[[@LINE-4]]:69}:"alias(\"_Z20f6_resolver_resolverv\")" void f6(void) __attribute__((alias("f6_resolver"))); // expected-error@-1 {{alias must point to a defined variable or function}} // expected-note@-2 {{must refer to its mangled name}} // expected-note@-3 {{function by that name is mangled as}} -// CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:30-[[@LINE-4]]:50}:"alias(\"_Z11f6_resolverv\")" +// FIXIT: fix-it:"{{.*}}":{[[@LINE-4]]:30-[[@LINE-4]]:50}:"alias(\"_Z11f6_resolverv\")" __attribute__((unused, alias("resolver"), deprecated("hahahaha, isn't C great?"))) void func(); // expected-error@-2 {{alias must point to a defined variable or function}} // expected-note@-3 {{must refer to its mangled name}} +#endif +// CHECK: @_ZN4libc4log2Ed ={{.*}} alias double (double), ptr @log2 +// CHECK: define{{.*}} @log2( +namespace libc { double log2(double x); } +extern "C" double log2(double); +namespace std { using ::log2; } +using std::log2; + +namespace libc { +decltype(libc::log2) __log2_impl__ __asm__("log2"); +decltype(libc::log2) log2 [[gnu::alias("log2")]]; +double __log2_impl__(double x) { return x; } +} _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
