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llvm-project/clang/test/PCH/external-defs.c

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When writing a PCH file, keep track of all of the non-static, non-inline external definitions (and tentative definitions) that are found at the top level. The corresponding declarations are stored in a record in the PCH file, so that they can be provided to the ASTConsumer (via HandleTopLevelDecl) when the PCH file is read. llvm-svn: 69005
2009-04-14 08:24:19 +08:00
// Test with pch.
// RUN: clang-cc -triple x86_64-apple-darwin9 -emit-pch -o %t.pch %S/external-defs.h &&
// RUN: clang-cc -triple x86_64-apple-darwin9 -include-pch %t.pch -emit-llvm -o %t %s &&
When building a PCH file, don't perform end-of-translation-unit wrap-up (e.g., turning tentative definitions into definitions). Also, very that, when we actually use the PCH file, we get the ride code generation for tentative definitions and definitions that show up in the PCH file. llvm-svn: 69043
2009-04-15 00:27:31 +08:00
// RUN: grep "@x = common global i32 0" %t | count 1 &&
// RUN: grep "@z" %t | count 0 &&
// RUN: grep "@x2 = global i32 19" %t | count 1 &&
int x2 = 19;
// RUN: grep "@incomplete_array = common global .*1 x i32" %t | count 1 &&
// RUN: grep "@incomplete_array2 = common global .*17 x i32" %t | count 1 &&
int incomplete_array2[17];
// RUN: grep "@incomplete_array3 = common global .*1 x i32" %t | count 1
int incomplete_array3[];
struct S {
int x, y;
};