================
@@ -4770,9 +4770,20 @@ std::string CompilerInvocation::getModuleHash() const {
// When compiling with -gmodules, also hash -fdebug-prefix-map as it
// affects the debug info in the PCM.
- if (getCodeGenOpts().DebugTypeExtRefs)
+ if (getHeaderSearchOpts().ModuleFormat == "obj") {
----------------
ributzka wrote:
There was a test case that only passed the module format, but not
DebugTypeExtRefs. DebugTypeExtRefs was used as a proxy for `-gmodules`, but
that doesn't always work. From my understanding the driving factor should be
the ModuleFormat, because that decides if debug options make a difference in
the PCM.
https://github.com/llvm/llvm-project/pull/74006
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