Encode the target triple in the PCH file, and check that target triple when using the PCH file
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68824 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/PCHWriter.cpp b/lib/Frontend/PCHWriter.cpp
index 6feb726..a31c0c7 100644
--- a/lib/Frontend/PCHWriter.cpp
+++ b/lib/Frontend/PCHWriter.cpp
@@ -21,6 +21,7 @@
#include "clang/Lex/Preprocessor.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/SourceManager.h"
+#include "clang/Basic/TargetInfo.h"
#include "llvm/Bitcode/BitstreamWriter.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/MemoryBuffer.h"
@@ -328,6 +329,21 @@
// PCHWriter Implementation
//===----------------------------------------------------------------------===//
+/// \brief Write the target triple (e.g., i686-apple-darwin9).
+void PCHWriter::WriteTargetTriple(const TargetInfo &Target) {
+ using namespace llvm;
+ BitCodeAbbrev *Abbrev = new BitCodeAbbrev();
+ Abbrev->Add(BitCodeAbbrevOp(pch::TARGET_TRIPLE));
+ Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Triple name
+ unsigned TripleAbbrev = S.EmitAbbrev(Abbrev);
+
+ RecordData Record;
+ Record.push_back(pch::TARGET_TRIPLE);
+ const char *Triple = Target.getTargetTriple();
+ S.EmitRecordWithBlob(TripleAbbrev, Record, Triple, strlen(Triple));
+}
+
+/// \brief Write the LangOptions structure.
void PCHWriter::WriteLanguageOptions(const LangOptions &LangOpts) {
RecordData Record;
Record.push_back(LangOpts.Trigraphs);
@@ -815,7 +831,8 @@
DeclsToEmit.push(Context.getTranslationUnitDecl());
// Write the remaining PCH contents.
- S.EnterSubblock(pch::PCH_BLOCK_ID, 2);
+ S.EnterSubblock(pch::PCH_BLOCK_ID, 3);
+ WriteTargetTriple(Context.Target);
WriteLanguageOptions(Context.getLangOptions());
WriteSourceManagerBlock(Context.getSourceManager());
WritePreprocessor(PP);