[llvm] f838338 - [SlotIndexes] Add insertion point for insertMBBIntoMaps
Carl Ritson via llvm-commits
llvm-commits at lists.llvm.org
Fri Apr 24 18:12:30 PDT 2020
Author: Carl Ritson
Date: 2020-04-25T09:36:19+09:00
New Revision: f83833868b459b176ff7554053bd40b70cd42af0
URL: https://github.com/llvm/llvm-project/commit/f83833868b459b176ff7554053bd40b70cd42af0
DIFF: https://github.com/llvm/llvm-project/commit/f83833868b459b176ff7554053bd40b70cd42af0.diff
LOG: [SlotIndexes] Add insertion point for insertMBBIntoMaps
Summary:
Allow the specification of an insertion point (MachineInstr)
for insertMBBIntoMaps.
This makes it possible to update slot indexes and live intervals
when trivially splitting a block by specifying the point of the
split as the insertion point for the block in the maps.
Reviewers: qcolombet, arsenm, kariddi, MaskRay, tpr
Reviewed By: kariddi
Subscribers: MatzeB, wdng, arphaman, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D78417
Added:
Modified:
llvm/include/llvm/CodeGen/LiveIntervals.h
llvm/include/llvm/CodeGen/SlotIndexes.h
Removed:
################################################################################
diff --git a/llvm/include/llvm/CodeGen/LiveIntervals.h b/llvm/include/llvm/CodeGen/LiveIntervals.h
index 1d89e6f38c72..1b921eea782d 100644
--- a/llvm/include/llvm/CodeGen/LiveIntervals.h
+++ b/llvm/include/llvm/CodeGen/LiveIntervals.h
@@ -256,8 +256,9 @@ class VirtRegMap;
return Indexes->getMBBFromIndex(index);
}
- void insertMBBInMaps(MachineBasicBlock *MBB) {
- Indexes->insertMBBInMaps(MBB);
+ void insertMBBInMaps(MachineBasicBlock *MBB,
+ MachineInstr *InsertionPoint = nullptr) {
+ Indexes->insertMBBInMaps(MBB, InsertionPoint);
assert(unsigned(MBB->getNumber()) == RegMaskBlocks.size() &&
"Blocks must be added in order.");
RegMaskBlocks.push_back(std::make_pair(RegMaskSlots.size(), 0));
diff --git a/llvm/include/llvm/CodeGen/SlotIndexes.h b/llvm/include/llvm/CodeGen/SlotIndexes.h
index 85bd7a404f9b..19eab7ae5e35 100644
--- a/llvm/include/llvm/CodeGen/SlotIndexes.h
+++ b/llvm/include/llvm/CodeGen/SlotIndexes.h
@@ -604,14 +604,22 @@ class raw_ostream;
}
/// Add the given MachineBasicBlock into the maps.
- void insertMBBInMaps(MachineBasicBlock *mbb) {
+ /// If \p InsertionPoint is specified then the block will be placed
+ /// before the given machine instr, otherwise it will be placed
+ /// before the next block in MachineFunction insertion order.
+ void insertMBBInMaps(MachineBasicBlock *mbb,
+ MachineInstr *InsertionPoint = nullptr) {
MachineFunction::iterator nextMBB =
std::next(MachineFunction::iterator(mbb));
IndexListEntry *startEntry = nullptr;
IndexListEntry *endEntry = nullptr;
IndexList::iterator newItr;
- if (nextMBB == mbb->getParent()->end()) {
+ if (InsertionPoint) {
+ startEntry = createEntry(nullptr, 0);
+ endEntry = getInstructionIndex(*InsertionPoint).listEntry();
+ newItr = indexList.insert(endEntry->getIterator(), startEntry);
+ } else if (nextMBB == mbb->getParent()->end()) {
startEntry = &indexList.back();
endEntry = createEntry(nullptr, 0);
newItr = indexList.insertAfter(startEntry->getIterator(), endEntry);
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