commit 030237d0ff0132db949380ef9d5f885196f7f44c
author Tobias Grosser <tobias@grosser.es> Fri Feb 21 15:06:05 2014 +0000
committer Tobias Grosser <tobias@grosser.es> Fri Feb 21 15:06:05 2014 +0000
tree ee15e633663326dcaf47d39aa533df18f5c35174
parent 9a51148cb548bdee94f61af6c9efec142f698b74

Codegen: Do not crash when seeing debug intrinsics

We now skip the debug intrinsics which is a lot better than crashing due to
uncopied metadata references. We should step by step investigate which debug
intrinsics we can copy without trouble.

We still keep the debug location metadata.

llvm-svn: 201860

polly/lib/CodeGen/BlockGenerators.cpp

diff --git a/polly/lib/CodeGen/BlockGenerators.cpp b/polly/lib/CodeGen/BlockGenerators.cpp
index b66b034..a5d1f0f 100644
--- a/polly/lib/CodeGen/BlockGenerators.cpp
+++ b/polly/lib/CodeGen/BlockGenerators.cpp
@@ -25,6 +25,7 @@
 #include "llvm/Analysis/LoopInfo.h"
 #include "llvm/Analysis/ScalarEvolution.h"
 #include "llvm/Analysis/ScalarEvolutionExpander.h"
+#include "llvm/IR/IntrinsicInst.h"
 #include "llvm/Transforms/Utils/BasicBlockUtils.h"
 
 using namespace llvm;
@@ -219,6 +220,13 @@
 
 void BlockGenerator::copyInstScalar(const Instruction *Inst, ValueMapT &BBMap,
                                     ValueMapT &GlobalMap, LoopToScevMapT &LTS) {
+
+  // We do not generate debug intrinsics as we did not investigate how to
+  // copy them correctly. At the current state, they just crash the code
+  // generation as the meta-data operands are not correctly copied.
+  if (isa<DbgInfoIntrinsic>(Inst))
+    return;
+
   Instruction *NewInst = Inst->clone();
 
   // Replace old operands with the new ones.