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Add -verify-misched option.

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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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176685 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Trick 2013-03-08 05:40:34 +00:00
parent 6a66500cbe
commit fff2d3aed9
1 changed files with 9 additions and 0 deletions
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9
lib/CodeGen/MachineScheduler.cpp
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@ -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;
}