6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2026-04-20 16:17:38 +00:00
Code Issues Projects Releases Wiki Activity

Implement LiveRangeCalc::extendToUses() and createDeadDefs().

Browse Source 
These LiveRangeCalc methods are to be used when computing a live range
from scratch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158027 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2012-06-05 21:54:09 +00:00
parent d88d27868b
commit 4e53a40ea3
4 changed files with 108 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/CodeGen/LiveInterval.cpp
+20
View File
@@ -48,6 +48,26 @@ LiveInterval::iterator LiveInterval::find(SlotIndex Pos) {
return I;
}
VNInfo *LiveInterval::createDeadDef(SlotIndex Def,
VNInfo::Allocator &VNInfoAllocator) {
assert(!Def.isDead() && "Cannot define a value at the dead slot");
iterator I = find(Def);
if (I == end()) {
VNInfo *VNI = getNextValue(Def, VNInfoAllocator);
ranges.push_back(LiveRange(Def, Def.getDeadSlot(), VNI));
return VNI;
}
if (SlotIndex::isSameInstr(Def, I->start)) {
assert(I->start == Def && "Cannot insert def, already live");
assert(I->valno->def == Def && "Inconsistent existing value def");
return I->valno;
}
assert(SlotIndex::isEarlierInstr(Def, I->start) && "Already live at def");
VNInfo *VNI = getNextValue(Def, VNInfoAllocator);
ranges.insert(I, LiveRange(Def, Def.getDeadSlot(), VNI));
return VNI;
}
/// killedInRange - Return true if the interval has kills in [Start,End).
bool LiveInterval::killedInRange(SlotIndex Start, SlotIndex End) const {
Ranges::const_iterator r =