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Revert r302932, as it appears to be breaking stage2 for some of our modules-enabled buildbots. 

llvm-svn: 302947
This commit is contained in:
Richard Smith 2017-05-12 20:42:54 +00:00
parent 4de0f034cf
commit 483d74c7ee
1 changed files with 12 additions and 7 deletions
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19
clang/lib/Lex/PPLexerChange.cpp
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@ -731,7 +731,7 @@ Module *Preprocessor::LeaveSubmodule(bool ForPragma) {
Module *LeavingMod = Info.M;
SourceLocation ImportLoc = Info.ImportLoc;
if (!needModuleMacros() ||
if (!needModuleMacros() ||
(!getLangOpts().ModulesLocalVisibility &&
LeavingMod->getTopLevelModuleName() != getLangOpts().CurrentModule)) {
// If we don't need module macros, or this is not a module for which we
@ -777,6 +777,17 @@ Module *Preprocessor::LeaveSubmodule(bool ForPragma) {
for (auto *MD = Macro.getLatest(); MD != OldMD; MD = MD->getPrevious()) {
assert(MD && "broken macro directive chain");
// Stop on macros defined in other submodules of this module that we
// #included along the way. There's no point doing this if we're
// tracking local submodule visibility, since there can be no such
// directives in our list.
if (!getLangOpts().ModulesLocalVisibility) {
Module *Mod = getModuleContainingLocation(MD->getLocation());
if (Mod != LeavingMod &&
Mod->getTopLevelModule() == LeavingMod->getTopLevelModule())
break;
}
if (auto *VisMD = dyn_cast<VisibilityMacroDirective>(MD)) {
// The latest visibility directive for a name in a submodule affects
// all the directives that come before it.
@ -798,12 +809,6 @@ Module *Preprocessor::LeaveSubmodule(bool ForPragma) {
if (Def || !Macro.getOverriddenMacros().empty())
addModuleMacro(LeavingMod, II, Def,
Macro.getOverriddenMacros(), IsNew);
if (!getLangOpts().ModulesLocalVisibility) {
// This macro is exposed to the rest of this compilation as a
// ModuleMacro; we don't need to track its MacroDirective any more.
Macro.setLatest(nullptr);
}
break;
}
}