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authorAdrian Prantl <aprantl@apple.com>2013-05-16 00:41:31 +0000
committerAdrian Prantl <aprantl@apple.com>2013-05-16 00:41:31 +0000
commit48b3c7dd3df79c79a7b6a943a8ed071e3309c103 (patch)
tree0a4a4221eb48580b37807d4bec1e3cbe43d8e687 /clang/lib/CodeGen/CodeGenFunction.cpp
parent5e5ff6e170faddd31ff3e08f6d7e8ad45a2db46e (diff)
downloadbcm5719-llvm-48b3c7dd3df79c79a7b6a943a8ed071e3309c103.tar.gz
bcm5719-llvm-48b3c7dd3df79c79a7b6a943a8ed071e3309c103.zip
Clarify comment.
llvm-svn: 181959
Diffstat (limited to 'clang/lib/CodeGen/CodeGenFunction.cpp')
-rw-r--r--clang/lib/CodeGen/CodeGenFunction.cpp10
1 files changed, 6 insertions, 4 deletions
diff --git a/clang/lib/CodeGen/CodeGenFunction.cpp b/clang/lib/CodeGen/CodeGenFunction.cpp
index 3e04ae7d153..0986ae7d6a8 100644
--- a/clang/lib/CodeGen/CodeGenFunction.cpp
+++ b/clang/lib/CodeGen/CodeGenFunction.cpp
@@ -192,10 +192,12 @@ void CodeGenFunction::FinishFunction(SourceLocation EndLoc) {
bool OnlySimpleReturnStmts = NumSimpleReturnExprs > 0
&& NumSimpleReturnExprs == NumReturnExprs;
// If the function contains only a simple return statement, the
- // cleanup code may become the first breakpoint in the function. To
- // be safe, set the debug location for it to the location of the
- // return statement. Otherwise point it to end of the function's
- // lexical scope.
+ // location before the cleanup code becomes the last useful
+ // breakpoint in the function, because the simple return expression
+ // will be evaluated after the cleanup code. To be safe, set the
+ // debug location for cleanup code to the location of the return
+ // statement. Otherwise the cleanup code should be at the end of the
+ // function's lexical scope.
if (CGDebugInfo *DI = getDebugInfo()) {
if (OnlySimpleReturnStmts)
DI->EmitLocation(Builder, LastStopPoint);
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