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cosmetic changes from review of last patch. obvious

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34598 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dale Johannesen 2007-02-25 18:31:31 +00:00
parent de4e942faa
commit ce74de46dd
2 changed files with 5 additions and 4 deletions
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4
lib/Target/ARM/ARMConstantIslandPass.cpp
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@ -558,7 +558,7 @@ MachineBasicBlock *ARMConstantIslands::SplitBlockBeforeInstr(MachineInstr *MI) {
return NewBB;
}
//// OffsetIsInRange - Checks whether UserOffset is within MaxDisp of
/// OffsetIsInRange - Checks whether UserOffset is within MaxDisp of
/// TrialOffset.
bool ARMConstantIslands::OffsetIsInRange(unsigned UserOffset,
unsigned TrialOffset, unsigned MaxDisp, bool NegativeOK) {
@ -631,7 +631,7 @@ static bool BBIsJumpedOver(MachineBasicBlock *MBB) {
void ARMConstantIslands::AdjustBBOffsetsAfter(MachineBasicBlock *BB, int delta)
{
MachineFunction::iterator MBBI = BB->getParent()->end();
for(int i=BB->getNumber()+1; i<=prior(MBBI)->getNumber(); i++)
for(unsigned i=BB->getNumber()+1; i<BB->getParent()->getNumBlockIDs(); i++)
BBOffsets[i] += delta;
}

5
lib/Target/ARM/README.txt
View File

@ -24,8 +24,9 @@ things that can be done:
1. When there isn't an existing water, the current MBB is split right after
the use. It would be profitable to look farther forward, especially on Thumb,
where negative offsets won't work.
Now it will put the island at the end of the block if that is in range. If it
is not in range things still work as above, which is poor on Thumb.
(Partially fixed: it will put the island at the end of the block if that is
in range. If it is not in range things still work as above, which is poor on
Thumb.)
2. There may be some advantage to trying to be smarter about the initial
placement, rather than putting everything at the end.