diff options
Diffstat (limited to 'llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp b/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp index f64b00c0028..132030d0393 100644 --- a/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp +++ b/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp @@ -2047,6 +2047,11 @@ char ARMPreAllocLoadStoreOpt::ID = 0; INITIALIZE_PASS(ARMPreAllocLoadStoreOpt, "arm-prera-ldst-opt", ARM_PREALLOC_LOAD_STORE_OPT_NAME, false, false) +// Limit the number of instructions to be rescheduled. +// FIXME: tune this limit, and/or come up with some better heuristics. +static cl::opt<unsigned> InstReorderLimit("arm-prera-ldst-opt-reorder-limit", + cl::init(8), cl::Hidden); + bool ARMPreAllocLoadStoreOpt::runOnMachineFunction(MachineFunction &Fn) { if (AssumeMisalignedLoadStores || skipFunction(Fn.getFunction())) return false; @@ -2222,7 +2227,7 @@ bool ARMPreAllocLoadStoreOpt::RescheduleOps(MachineBasicBlock *MBB, } // Don't try to reschedule too many instructions. - if (NumMove == 8) // FIXME: Tune this limit. + if (NumMove == InstReorderLimit) break; // Found a mergable instruction; save information about it. |
