diff options
Diffstat (limited to 'llvm/lib/Target/AArch64/AArch64Subtarget.cpp')
| -rw-r--r-- | llvm/lib/Target/AArch64/AArch64Subtarget.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/Target/AArch64/AArch64Subtarget.cpp b/llvm/lib/Target/AArch64/AArch64Subtarget.cpp index 6dfa0af4f88..e6ef6dc80e2 100644 --- a/llvm/lib/Target/AArch64/AArch64Subtarget.cpp +++ b/llvm/lib/Target/AArch64/AArch64Subtarget.cpp @@ -114,6 +114,11 @@ void AArch64Subtarget::overrideSchedPolicy(MachineSchedPolicy &Policy, // bi-directional scheduling. 253.perlbmk. Policy.OnlyTopDown = false; Policy.OnlyBottomUp = false; + // Enabling or Disabling the latency heuristic is a close call: It seems to + // help nearly no benchmark on out-of-order architectures, on the other hand + // it regresses register pressure on a few benchmarking. + if (isCyclone()) + Policy.DisableLatencyHeuristic = true; } bool AArch64Subtarget::enableEarlyIfConversion() const { |
