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When creating intervals, leave min(1, numdefs) holes after each instruction.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57765 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2008-10-18 05:18:55 +00:00
parent 4ae14bc1f5
commit 99fe34b9b2
1 changed files with 13 additions and 5 deletions
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18
lib/CodeGen/LiveIntervalAnalysis.cpp
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@ -130,9 +130,13 @@ void LiveIntervals::computeNumbering() {
MIIndex += InstrSlots::NUM;
FunctionSize++;
// Insert an empty slot after every instruction.
MIIndex += InstrSlots::NUM;
i2miMap_.push_back(0);
// Insert min(1, numdefs) empty slots after every instruction.
unsigned Slots = I->getDesc().getNumDefs();
if (Slots == 0)
Slots = 1;
MIIndex += InstrSlots::NUM * Slots;
while (Slots--)
i2miMap_.push_back(0);
}
// Set the MBB2IdxMap entry for this MBB.
@ -732,8 +736,12 @@ void LiveIntervals::computeIntervals() {
handleRegisterDef(MBB, MI, MIIndex, MO, i);
}
}
MIIndex += InstrSlots::NUM;
// Skip over the empty slots after each instruction.
unsigned Slots = MI->getDesc().getNumDefs();
if (Slots == 0)
Slots = 1;
MIIndex += InstrSlots::NUM * Slots;
// Skip over empty indices.
while (MIIndex / InstrSlots::NUM < i2miMap_.size() &&