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llvm-project/clang/test/PCH/local_static.cpp

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Revert "Revert r241620 and follow-up commits" and move the initialization of the llvm targets from clang/CodeGen into ClangCheck.cpp and CIndex.cpp. llvm-svn: 241653
2015-07-08 09:00:30 +08:00
// REQUIRES: x86-registered-target
Fix PCH deserialization bug with local static symbols being treated as local extern. This triggered a miscompilation of code using Boost's function_template.hpp when it was included inside a PCH file. A local static within that header would be treated as local extern, resulting in the wrong mangling. This only occurred during PCH deserialization. Fixes <rdar://problem/15975816> and <rdar://problem/15926311>. llvm-svn: 201130
2014-02-11 14:29:29 +08:00
// Test this without PCH.
// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9.0 -include %S/local_static.h -fsyntax-only %s -emit-llvm -o %t.no_pch.ll %s
// RUN: FileCheck --input-file %t.no_pch.ll %s
// Test with PCH.
// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9.0 -x c++-header -emit-pch -o %t.pch %S/local_static.h
// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9.0 -include-pch %t.pch -emit-llvm -o %t.pch.ll %s
// RUN: FileCheck --input-file %t.pch.ll %s
void test(Bar &b) {
b.f<int>();
static int s;
}
// Check if the mangling of static and local extern variables
// are correct and preserved by PCH.
// CHECK: @_ZZ4testR3BarE1s = internal global i32 0, align 4
// CHECK: @_ZZN3Bar1fIiEEvvE1y = linkonce_odr constant i32 0, align 4