[coroutines] Pass coro func args to promise ctor

Summary:
Use corutine function arguments to initialize a promise type, but only
if the promise type defines a constructor that takes those arguments.
Otherwise, fall back to the default constructor.

Test Plan: check-clang

Reviewers: rsmith, GorNishanov, eric_niebler

Reviewed By: GorNishanov

Subscribers: toby-allsopp, lewissbaker, EricWF, cfe-commits

Differential Revision: https://reviews.llvm.org/D41820

llvm-svn: 323381

1 files changed, 1 insertions, 0 deletions

diff --git a/clang/lib/Sema/ScopeInfo.cpp b/clang/lib/Sema/ScopeInfo.cpp
index b309a36a30a..62a83ccb70a 100644
--- a/clang/lib/Sema/ScopeInfo.cpp
+++ b/clang/lib/Sema/ScopeInfo.cpp
@@ -43,6 +43,7 @@ void FunctionScopeInfo::Clear() {
   // Coroutine state
   FirstCoroutineStmtLoc = SourceLocation();
   CoroutinePromise = nullptr;
+  CoroutineParameterMoves.clear();
   NeedsCoroutineSuspends = true;
   CoroutineSuspends.first = nullptr;
   CoroutineSuspends.second = nullptr;