From: Mike Stump <mrs@apple.com>
Date: Tue, 15 Dec 2009 00:59:40 +0000 (+0000)
Subject: Ensure we preserve line information for each  trap for
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=41513444fe9d032dc74660c581d3689865bf32d3;p=clang

Ensure we preserve line information for each  trap for
-fcatch-undefined-behavior if we aren't optimizing.  WIP.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91382 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/CGExpr.cpp b/lib/CodeGen/CGExpr.cpp
index 975f749255..9af79ab70b 100644
--- a/lib/CodeGen/CGExpr.cpp
+++ b/lib/CodeGen/CGExpr.cpp
@@ -18,6 +18,7 @@
 #include "clang/AST/ASTContext.h"
 #include "clang/AST/DeclObjC.h"
 #include "llvm/Intrinsics.h"
+#include "clang/CodeGen/CodeGenOptions.h"
 #include "llvm/Target/TargetData.h"
 using namespace clang;
 using namespace CodeGen;
@@ -1014,7 +1015,14 @@ LValue CodeGenFunction::EmitPredefinedLValue(const PredefinedExpr *E) {
 }
 
 llvm::BasicBlock*CodeGenFunction::getTrapBB() {
-  if (TrapBB)
+  const CodeGenOptions &GCO = CGM.getCodeGenOpts();
+
+  // If we are not optimzing, don't collapse all calls to trap in the function
+  // to the same call, that way, in the debugger they can see which operation
+  // did in fact fail.  If we are optimizing, we collpase all call to trap down
+  // to just one per function to save on codesize.
+  if (GCO.OptimizationLevel
+      && TrapBB)
     return TrapBB;
 
   llvm::BasicBlock *Cont = 0;