Initial implementation of -fmacro-prefix-map and -ffile-prefix-map
GCC 8 implements -fmacro-prefix-map. Like -fdebug-prefix-map, it replaces a string prefix for the __FILE__ macro.
-ffile-prefix-map is the union of -fdebug-prefix-map and -fmacro-prefix-map
Reviewed By: rnk, Lekensteyn, maskray
Differential Revision: https://reviews.llvm.org/D49466
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 080320c..56f6653 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -3315,6 +3315,9 @@
for (const auto *A : Args.filtered(OPT_error_on_deserialized_pch_decl))
Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue());
+ for (const auto &A : Args.getAllArgValues(OPT_fmacro_prefix_map_EQ))
+ Opts.MacroPrefixMap.insert(StringRef(A).split('='));
+
if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
StringRef Value(A->getValue());
size_t Comma = Value.find(',');