diff options
| -rw-r--r-- | lib/CodeGen/InlineSpiller.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/CodeGen/InlineSpiller.cpp b/lib/CodeGen/InlineSpiller.cpp index 169a867aa7..01fe84030e 100644 --- a/lib/CodeGen/InlineSpiller.cpp +++ b/lib/CodeGen/InlineSpiller.cpp @@ -28,6 +28,7 @@ #include "llvm/CodeGen/MachineRegisterInfo.h" #include "llvm/Target/TargetMachine.h" #include "llvm/Target/TargetInstrInfo.h" +#include "llvm/Support/CommandLine.h" #include "llvm/Support/Debug.h" #include "llvm/Support/raw_ostream.h" @@ -45,6 +46,9 @@ STATISTIC(NumRemats, "Number of rematerialized defs for spilling"); STATISTIC(NumOmitReloadSpill, "Number of omitted spills of reloads"); STATISTIC(NumHoists, "Number of hoisted spills"); +static cl::opt<bool> DisableHoisting("disable-spill-hoist", cl::Hidden, + cl::desc("Disable inline spill hoisting")); + namespace { class InlineSpiller : public Spiller { MachineFunctionPass &Pass; @@ -367,7 +371,7 @@ void InlineSpiller::propagateSiblingValue(SibValueMap::iterator SVI, // Should this value be propagated as a preferred spill candidate? We don't // propagate values of registers that are about to spill. - bool PropSpill = !isRegToSpill(SV.SpillReg); + bool PropSpill = !DisableHoisting && !isRegToSpill(SV.SpillReg); unsigned SpillDepth = ~0u; for (TinyPtrVector<VNInfo*>::iterator DepI = Deps->begin(), |