diff options
Diffstat (limited to 'llvm/lib/Transforms/Scalar/LICM.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/LICM.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Scalar/LICM.cpp b/llvm/lib/Transforms/Scalar/LICM.cpp index 8a29540a9eb..6ef9d056132 100644 --- a/llvm/lib/Transforms/Scalar/LICM.cpp +++ b/llvm/lib/Transforms/Scalar/LICM.cpp @@ -767,6 +767,14 @@ static bool hoist(Instruction &I, const DominatorTree *DT, const Loop *CurLoop, // Move the new node to the Preheader, before its terminator. I.moveBefore(Preheader->getTerminator()); + // Do not retain debug locations when we are moving instructions to different + // basic blocks, because we want to avoid jumpy line tables. Calls, however, + // need to retain their debug locs because they may be inlined. + // FIXME: How do we retain source locations without causing poor debugging + // behavior? + if (!isa<CallInst>(I)) + I.setDebugLoc(DebugLoc()); + if (isa<LoadInst>(I)) ++NumMovedLoads; else if (isa<CallInst>(I)) |
