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Allow target to specify regclass for which antideps will only be broken along the critical path.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88682 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Goodwin
2009-11-13 19:52:48 +00:00
parent a8173b934f
commit 87d21b92fc
9 changed files with 123 additions and 44 deletions
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6
lib/CodeGen/PostRASchedulerList.cpp
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@ -216,14 +216,14 @@ bool PostRAScheduler::runOnMachineFunction(MachineFunction &Fn) {
// Check for explicit enable/disable of post-ra scheduling.
TargetSubtarget::AntiDepBreakMode AntiDepMode = TargetSubtarget::ANTIDEP_NONE;
SmallVector<TargetRegisterClass*, 4> ExcludedRCs;
SmallVector<TargetRegisterClass*, 4> CriticalPathRCs;
if (EnablePostRAScheduler.getPosition() > 0) {
if (!EnablePostRAScheduler)
return false;
} else {
// Check that post-RA scheduling is enabled for this target.
const TargetSubtarget &ST = Fn.getTarget().getSubtarget<TargetSubtarget>();
if (!ST.enablePostRAScheduler(OptLevel, AntiDepMode, ExcludedRCs))
if (!ST.enablePostRAScheduler(OptLevel, AntiDepMode, CriticalPathRCs))
return false;
}
@ -244,7 +244,7 @@ bool PostRAScheduler::runOnMachineFunction(MachineFunction &Fn) {
(ScheduleHazardRecognizer *)new SimpleHazardRecognizer();
AntiDepBreaker *ADB =
((AntiDepMode == TargetSubtarget::ANTIDEP_ALL) ?
(AntiDepBreaker *)new AggressiveAntiDepBreaker(Fn, ExcludedRCs) :
(AntiDepBreaker *)new AggressiveAntiDepBreaker(Fn, CriticalPathRCs) :
((AntiDepMode == TargetSubtarget::ANTIDEP_CRITICAL) ?
(AntiDepBreaker *)new CriticalAntiDepBreaker(Fn) : NULL));