diff options
Diffstat (limited to 'lib/Target')
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index 511cd31c64..4f8132d06b 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -221,7 +221,13 @@ X86TargetLowering::X86TargetLowering(X86TargetMachine &TM) // X86 is weird, it always uses i8 for shift amounts and setcc results. setBooleanContents(ZeroOrOneBooleanContent); - setSchedulingPreference(Sched::ILP); + + // For 64-bit since we have so many registers use the ILP scheduler, for + // 32-bit code use the register pressure specific scheduling. + if (Subtarget->is64Bit()) + setSchedulingPreference(Sched::ILP); + else + setSchedulingPreference(Sched::RegPressure); setStackPointerRegisterToSaveRestore(X86StackPtr); if (Subtarget->isTargetWindows() && !Subtarget->isTargetCygMing()) { |