Propagate SourceLocations through to get a Loc on float_cast_overflow

Summary:
float_cast_overflow is the only UBSan check without a source location attached.
This patch propagates SourceLocations where necessary to get them to the
EmitCheck() call.

Reviewers: rsmith, ABataev, rjmccall

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D11757

llvm-svn: 244568

1 files changed, 4 insertions, 2 deletions

diff --git a/clang/lib/CodeGen/CGExpr.cpp b/clang/lib/CodeGen/CGExpr.cpp
index 0ee144cb68d..a0d004d315c 100644
--- a/clang/lib/CodeGen/CGExpr.cpp
+++ b/clang/lib/CodeGen/CGExpr.cpp
@@ -96,10 +96,12 @@ llvm::Value *CodeGenFunction::EvaluateExprAsBool(const Expr *E) {
   }
 
   QualType BoolTy = getContext().BoolTy;
+  SourceLocation Loc = E->getExprLoc();
   if (!E->getType()->isAnyComplexType())
-    return EmitScalarConversion(EmitScalarExpr(E), E->getType(), BoolTy);
+    return EmitScalarConversion(EmitScalarExpr(E), E->getType(), BoolTy, Loc);
 
-  return EmitComplexToScalarConversion(EmitComplexExpr(E), E->getType(),BoolTy);
+  return EmitComplexToScalarConversion(EmitComplexExpr(E), E->getType(), BoolTy,
+                                       Loc);
 }
 
 /// EmitIgnoredExpr - Emit code to compute the specified expression,