Fix for bug 38508 - Don't do PCH processing when only generating preprocessor output
This clang-cl driver change removes the PCH options when we are only generating
preprocessed output. This is similar to the behavior of Y-.
Patch by: mikerice
Differential Revision: https://reviews.llvm.org/D50640
llvm-svn: 340025
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index 350ee0e3..6527c19 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -3010,9 +3010,10 @@
Args.eraseArg(options::OPT__SLASH_Yc);
YcArg = nullptr;
}
- if (Args.hasArg(options::OPT__SLASH_Y_)) {
- // /Y- disables all pch handling. Rather than check for it everywhere,
- // just remove clang-cl pch-related flags here.
+ if (FinalPhase == phases::Preprocess || Args.hasArg(options::OPT__SLASH_Y_)) {
+ // If only preprocessing or /Y- is used, all pch handling is disabled.
+ // Rather than check for it everywhere, just remove clang-cl pch-related
+ // flags here.
Args.eraseArg(options::OPT__SLASH_Fp);
Args.eraseArg(options::OPT__SLASH_Yc);
Args.eraseArg(options::OPT__SLASH_Yu);