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Clarify comment.

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llvm-svn: 181959
This commit is contained in:
Adrian Prantl
2013-05-16 00:41:31 +00:00
parent 5e5ff6e170
commit 48b3c7dd3d
1 changed files with 6 additions and 4 deletions
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10
clang/lib/CodeGen/CodeGenFunction.cpp
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@@ -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);