6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-10-02 02:55:35 +00:00
Code Issues Projects Releases Wiki Activity

Add SplitKit API to query and select the current interval being worked on.

Browse Source 
This makes it possible to target multiple registers in one pass.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129374 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2011-04-12 18:11:31 +00:00
parent dfaf0e2c0e
commit e1b43c3b40
2 changed files with 17 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
lib/CodeGen/SplitKit.cpp
View File

@ -557,7 +557,7 @@ VNInfo *SplitEditor::defFromParent(unsigned RegIdx,
}
/// Create a new virtual register and live interval.
void SplitEditor::openIntv() {
unsigned SplitEditor::openIntv() {
assert(!OpenIdx && "Previous LI not closed before openIntv");
// Create the complement as index 0.
@ -567,6 +567,13 @@ void SplitEditor::openIntv() {
// Create the open interval.
OpenIdx = Edit->size();
Edit->create(LIS, VRM);
return OpenIdx;
}
void SplitEditor::selectIntv(unsigned Idx) {
assert(Idx != 0 && "Cannot select the complement interval");
assert(Idx < Edit->size() && "Can only select previously opened interval");
OpenIdx = Idx;
}
SlotIndex SplitEditor::enterIntvBefore(SlotIndex Idx) {

10
lib/CodeGen/SplitKit.h
View File

@ -283,7 +283,15 @@ public:
void reset(LiveRangeEdit&);
/// Create a new virtual register and live interval.
void openIntv();
/// Return the interval index, starting from 1. Interval index 0 is the
/// implicit complement interval.
unsigned openIntv();
/// currentIntv - Return the current interval index.
unsigned currentIntv() const { return OpenIdx; }
/// selectIntv - Select a previously opened interval index.
void selectIntv(unsigned Idx);
/// enterIntvBefore - Enter the open interval before the instruction at Idx.
/// If the parent interval is not live before Idx, a COPY is not inserted.