Implement __builtin_LINE() et. al. to support source location capture.
Summary:
This patch implements the source location builtins `__builtin_LINE(), `__builtin_FUNCTION()`, `__builtin_FILE()` and `__builtin_COLUMN()`. These builtins are needed to implement [`std::experimental::source_location`](https://rawgit.com/cplusplus/fundamentals-ts/v2/main.html#reflection.src_loc.creation).
With the exception of `__builtin_COLUMN`, GCC also implements these builtins, and Clangs behavior is intended to match as closely as possible.
Reviewers: rsmith, joerg, aaron.ballman, bogner, majnemer, shafik, martong
Reviewed By: rsmith
Subscribers: rnkovacs, loskutov, riccibruno, mgorny, kunitoki, alexr, majnemer, hfinkel, cfe-commits
Differential Revision: https://reviews.llvm.org/D37035
llvm-svn: 360937
diff --git a/clang/lib/CodeGen/CGExpr.cpp b/clang/lib/CodeGen/CGExpr.cpp
index 5641d54..5b57655 100644
--- a/clang/lib/CodeGen/CGExpr.cpp
+++ b/clang/lib/CodeGen/CGExpr.cpp
@@ -1315,11 +1315,15 @@
return LV;
}
- case Expr::CXXDefaultArgExprClass:
- return EmitLValue(cast<CXXDefaultArgExpr>(E)->getExpr());
+ case Expr::CXXDefaultArgExprClass: {
+ auto *DAE = cast<CXXDefaultArgExpr>(E);
+ CXXDefaultArgExprScope Scope(*this, DAE);
+ return EmitLValue(DAE->getExpr());
+ }
case Expr::CXXDefaultInitExprClass: {
- CXXDefaultInitExprScope Scope(*this);
- return EmitLValue(cast<CXXDefaultInitExpr>(E)->getExpr());
+ auto *DIE = cast<CXXDefaultInitExpr>(E);
+ CXXDefaultInitExprScope Scope(*this, DIE);
+ return EmitLValue(DIE->getExpr());
}
case Expr::CXXTypeidExprClass:
return EmitCXXTypeidLValue(cast<CXXTypeidExpr>(E));