[NFC] Remove getDefaultCallingConvention IsBuiltin (#145904)

ASTContext::getDefaultCallingConvention() was documented as returning
"the default calling convention for the current target", but did not do
this, and was never intended to do this, it has always been controlled
by command-line options to deviate from the target default.

This commit changes ASTContext::getDefaultCallingConvention() to reflect
the fact that it returns the context's default calling convention, not
the target's default calling convention. The IsBuiltin parameter, which
was used to return the target's default calling convention rather than
the context's, is removed in favor of
getTargetInfo().getDefaultCallingConv() which is more explicit of the
intent.

1 files changed, 2 insertions, 1 deletions

diff --git a/clang/lib/Sema/SemaLookup.cpp b/clang/lib/Sema/SemaLookup.cpp
index aa7191d..6d6e07a 100644
--- a/clang/lib/Sema/SemaLookup.cpp
+++ b/clang/lib/Sema/SemaLookup.cpp
@@ -22,6 +22,7 @@
 #include "clang/AST/ExprCXX.h"
 #include "clang/Basic/Builtins.h"
 #include "clang/Basic/LangOptions.h"
+#include "clang/Basic/TargetInfo.h"
 #include "clang/Lex/HeaderSearch.h"
 #include "clang/Lex/ModuleLoader.h"
 #include "clang/Lex/Preprocessor.h"
@@ -777,7 +778,7 @@ static void GetOpenCLBuiltinFctOverloads(
     std::vector<QualType> &FunctionList, SmallVector<QualType, 1> &RetTypes,
     SmallVector<SmallVector<QualType, 1>, 5> &ArgTypes) {
   FunctionProtoType::ExtProtoInfo PI(
-      Context.getDefaultCallingConvention(false, false, true));
+      Context.getTargetInfo().getDefaultCallingConv());
   PI.Variadic = false;
 
   // Do not attempt to create any FunctionTypes if there are no return types,