Keep track of the number of statements/expressions written to and read
from a PCH file. It turns out that "Hello, World!" is bringing in 19%
of all of the statements in Carbon.h, so we need to be lazy.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69393 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/PCHWriter.cpp b/lib/Frontend/PCHWriter.cpp
index 5775ac4..64bf383 100644
--- a/lib/Frontend/PCHWriter.cpp
+++ b/lib/Frontend/PCHWriter.cpp
@@ -1723,7 +1723,7 @@
}
PCHWriter::PCHWriter(llvm::BitstreamWriter &Stream)
- : Stream(Stream), NextTypeID(pch::NUM_PREDEF_TYPE_IDS) { }
+ : Stream(Stream), NextTypeID(pch::NUM_PREDEF_TYPE_IDS), NumStatements(0) { }
void PCHWriter::WritePCH(ASTContext &Context, const Preprocessor &PP) {
// Emit the file header.
@@ -1749,6 +1749,11 @@
Stream.EmitRecord(pch::DECL_OFFSET, DeclOffsets);
if (!ExternalDefinitions.empty())
Stream.EmitRecord(pch::EXTERNAL_DEFINITIONS, ExternalDefinitions);
+
+ // Some simple statistics
+ RecordData Record;
+ Record.push_back(NumStatements);
+ Stream.EmitRecord(pch::STATISTICS, Record);
Stream.ExitBlock();
}
@@ -1880,6 +1885,7 @@
void PCHWriter::WriteSubStmt(Stmt *S) {
RecordData Record;
PCHStmtWriter Writer(*this, Record);
+ ++NumStatements;
if (!S) {
Stream.EmitRecord(pch::STMT_NULL_PTR, Record);
@@ -1900,6 +1906,7 @@
PCHStmtWriter Writer(*this, Record);
for (unsigned I = 0, N = StmtsToEmit.size(); I != N; ++I) {
+ ++NumStatements;
Stmt *S = StmtsToEmit[I];
if (!S) {