For Intel Atom, use ILP scheduling always, instead of ILP for 64 bit
and Hybrid for 32 bit, since benchmarks show ILP scheduling is better
most of the time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156028 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index bbe2808..bdbdaf5 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -167,11 +167,11 @@
// For 64-bit since we have so many registers use the ILP scheduler, for
// 32-bit code use the register pressure specific scheduling.
- // For 32 bit Atom, use Hybrid (register pressure + latency) scheduling.
- if (Subtarget->is64Bit())
+ // For Atom, always use ILP scheduling.
+ if (Subtarget->isAtom())
setSchedulingPreference(Sched::ILP);
- else if (Subtarget->isAtom())
- setSchedulingPreference(Sched::Hybrid);
+ else if (Subtarget->is64Bit())
+ setSchedulingPreference(Sched::ILP);
else
setSchedulingPreference(Sched::RegPressure);
setStackPointerRegisterToSaveRestore(X86StackPtr);