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Add -verify-misched option. 

This verifies live intervals both before and after scheduling. It's
useful for anyone hacking on live interval update.

Note that we don't yet pass verification all the time. We don't yet
handle updating nonallocatable live intervals perfectly.

llvm-svn: 176685
This commit is contained in:
Andrew Trick 2013-03-08 05:40:34 +00:00
parent 9c4a232add
commit 48f2a72435
1 changed files with 9 additions and 0 deletions
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9
llvm/lib/CodeGen/MachineScheduler.cpp
View File

@ -57,6 +57,9 @@ static cl::opt<bool> EnableLoadCluster("misched-cluster", cl::Hidden,
static cl::opt<bool> EnableMacroFusion("misched-fusion", cl::Hidden,
cl::desc("Enable scheduling for macro fusion."), cl::init(true));
static cl::opt<bool> VerifyScheduling("verify-misched", cl::Hidden,
cl::desc("Verify machine instrs before and after machine scheduling"));
// DAG subtrees must have at least this many nodes.
static const unsigned MinSubtreeSize = 8;
@ -197,6 +200,10 @@ bool MachineScheduler::runOnMachineFunction(MachineFunction &mf) {
LIS = &getAnalysis<LiveIntervals>();
const TargetInstrInfo *TII = MF->getTarget().getInstrInfo();
if (VerifyScheduling) {
DEBUG(LIS->print(dbgs()));
MF->verify(this, "Before machine scheduling.");
}
RegClassInfo->runOnMachineFunction(*MF);
// Select the scheduler, or set the default.
@ -285,6 +292,8 @@ bool MachineScheduler::runOnMachineFunction(MachineFunction &mf) {
}
Scheduler->finalizeSchedule();
DEBUG(LIS->print(dbgs()));
if (VerifyScheduling)
MF->verify(this, "After machine scheduling.");
return true;
}