diff options
| -rw-r--r-- | lib/CodeGen/InlineSpiller.cpp | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/lib/CodeGen/InlineSpiller.cpp b/lib/CodeGen/InlineSpiller.cpp index 0e157ac..ee30a15 100644 --- a/lib/CodeGen/InlineSpiller.cpp +++ b/lib/CodeGen/InlineSpiller.cpp @@ -35,6 +35,10 @@ using namespace llvm; static cl::opt<bool> VerifySpills("verify-spills", cl::desc("Verify after each spill/split")); +static cl::opt<bool> +ExtraSpillerSplits("extra-spiller-splits", + cl::desc("Enable additional splitting during splitting")); + namespace { class InlineSpiller : public Spiller { MachineFunctionPass &pass_; @@ -116,10 +120,13 @@ bool InlineSpiller::split() { splitAnalysis_.analyze(&edit_->getParent()); // Try splitting around loops. - if (const MachineLoop *loop = splitAnalysis_.getBestSplitLoop()) { - SplitEditor(splitAnalysis_, lis_, vrm_, mdt_, *edit_) - .splitAroundLoop(loop); - return true; + if (ExtraSpillerSplits) { + const MachineLoop *loop = splitAnalysis_.getBestSplitLoop(); + if (loop) { + SplitEditor(splitAnalysis_, lis_, vrm_, mdt_, *edit_) + .splitAroundLoop(loop); + return true; + } } // Try splitting into single block intervals. @@ -131,10 +138,13 @@ bool InlineSpiller::split() { } // Try splitting inside a basic block. - if (const MachineBasicBlock *MBB = splitAnalysis_.getBlockForInsideSplit()) { - SplitEditor(splitAnalysis_, lis_, vrm_, mdt_, *edit_) - .splitInsideBlock(MBB); - return true; + if (ExtraSpillerSplits) { + const MachineBasicBlock *MBB = splitAnalysis_.getBlockForInsideSplit(); + if (MBB){ + SplitEditor(splitAnalysis_, lis_, vrm_, mdt_, *edit_) + .splitInsideBlock(MBB); + return true; + } } return false; |