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Add a target hook to allow loads from constant pools to be rematerialized, and an

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implementation for x86.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37576 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2007-06-14 20:50:44 +00:00
parent 86ff296e63
commit c101e95cb6
5 changed files with 42 additions and 3 deletions
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3
lib/CodeGen/VirtRegMap.cpp
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@ -664,7 +664,8 @@ void LocalSpiller::RewriteMBB(MachineBasicBlock &MBB, VirtRegMap &VRM,
// If this instruction is being rematerialized, just remove it!
int FrameIdx;
if ((TID->Flags & M_REMATERIALIZIBLE) ||
TII->isLoadFromStackSlot(&MI, FrameIdx)) {
TII->isLoadFromStackSlot(&MI, FrameIdx) ||
TII->isOtherReMaterializableLoad(&MI)) {
bool Remove = true;
for (unsigned i = 0, e = MI.getNumOperands(); i != e; ++i) {
MachineOperand &MO = MI.getOperand(i);