From: Richard Smith <richard-llvm@metafoo.co.uk>
Date: Wed, 4 Sep 2019 22:14:50 +0000 (+0000)
Subject: For PR43213, track whether template parameters are implicit through
X-Git-Tag: llvmorg-11-init~10010
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=71c37a8fdaa8c5abbb3c614576659e5a948781e6;p=platform%2Fupstream%2Fllvm.git

For PR43213, track whether template parameters are implicit through
template instantiation so we know whether to mangle them in
lambda-expressions.

llvm-svn: 370991
---

diff --git a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
index 6e4f9b9..5ef16b4 100644
--- a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
+++ b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -2337,6 +2337,7 @@ Decl *TemplateDeclInstantiator::VisitTemplateTypeParmDecl(
       D->getDepth() - TemplateArgs.getNumSubstitutedLevels(), D->getIndex(),
       D->getIdentifier(), D->wasDeclaredWithTypename(), D->isParameterPack());
   Inst->setAccess(AS_public);
+  Inst->setImplicit(D->isImplicit());
 
   if (D->hasDefaultArgument() && !D->defaultArgumentWasInherited()) {
     TypeSourceInfo *InstantiatedDefaultArg =
@@ -2483,6 +2484,7 @@ Decl *TemplateDeclInstantiator::VisitNonTypeTemplateParmDecl(
         D->getPosition(), D->getIdentifier(), T, D->isParameterPack(), DI);
 
   Param->setAccess(AS_public);
+  Param->setImplicit(D->isImplicit());
   if (Invalid)
     Param->setInvalidDecl();
 
@@ -2626,6 +2628,7 @@ TemplateDeclInstantiator::VisitTemplateTemplateParmDecl(
                               D->getDefaultArgument().getTemplateNameLoc()));
   }
   Param->setAccess(AS_public);
+  Param->setImplicit(D->isImplicit());
 
   // Introduce this template parameter's instantiation into the instantiation
   // scope.
diff --git a/clang/test/CodeGenCXX/mangle-lambda-explicit-template-params.cpp b/clang/test/CodeGenCXX/mangle-lambda-explicit-template-params.cpp
index 3bec641..b88b0d5 100644
--- a/clang/test/CodeGenCXX/mangle-lambda-explicit-template-params.cpp
+++ b/clang/test/CodeGenCXX/mangle-lambda-explicit-template-params.cpp
@@ -32,3 +32,10 @@ inline void inline_func() {
 void call_inline_func() {
   inline_func();
 }
+
+template<typename> void f() {
+  // CHECK: define linkonce_odr {{.*}} @_ZZ1fIiEvvENKUlT_E_clIiEEDaS0_(
+  auto x = [](auto){};
+  x(0);
+}
+void use_f() { f<int>(); }