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Reapply bottom-up fast-isel, with several fixes for x86-32:

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- Check getBytesToPopOnReturn().
 - Eschew ST0 and ST1 for return values.
 - Fix the PIC base register initialization so that it doesn't ever
   fail to end up the top of the entry block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108039 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2010-07-10 09:00:22 +00:00
parent d737fcafc4
commit 84023e0fbe
26 changed files with 775 additions and 391 deletions
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lib/CodeGen/SelectionDAG/InstrEmitter.cpp
+7 -2
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@@ -734,8 +734,13 @@ EmitMachineNode(SDNode *Node, bool IsClone, bool IsCloned,
if (II.usesCustomInsertionHook()) {
// Insert this instruction into the basic block using a target
// specific inserter which may returns a new basic block.
MBB = TLI->EmitInstrWithCustomInserter(MI, MBB);
InsertPos = MBB->end();
bool AtEnd = InsertPos == MBB->end();
MachineBasicBlock *NewMBB = TLI->EmitInstrWithCustomInserter(MI, MBB);
if (NewMBB != MBB) {
if (AtEnd)
InsertPos = NewMBB->end();
MBB = NewMBB;
}
return;
}