[llvm-commits] CVS: llvm/include/llvm/CodeGen/LiveVariables.h
Chris Lattner
lattner at cs.uiuc.edu
Sun May 11 22:52:01 PDT 2003
Changes in directory llvm/include/llvm/CodeGen:
LiveVariables.h updated: 1.2 -> 1.3
---
Log message:
Expand API for updating live var info.
Expose iterators, not const-iterators.
Rename method that was VERY misleading
---
Diffs of the changes:
Index: llvm/include/llvm/CodeGen/LiveVariables.h
diff -u llvm/include/llvm/CodeGen/LiveVariables.h:1.2 llvm/include/llvm/CodeGen/LiveVariables.h:1.3
--- llvm/include/llvm/CodeGen/LiveVariables.h:1.2 Wed May 7 15:07:58 2003
+++ llvm/include/llvm/CodeGen/LiveVariables.h Sun May 11 22:51:30 2003
@@ -72,6 +72,7 @@
/// liveness for values that are not in this set.
///
std::vector<bool> AllocatablePhysicalRegisters;
+
private: // Intermediate data structures
/// BBMap - Maps LLVM basic blocks to their corresponding machine basic block.
@@ -89,30 +90,60 @@
/// killed_iterator - Iterate over registers killed by a machine instruction
///
- typedef std::multimap<MachineInstr*,
- unsigned>::const_iterator killed_iterator;
+ typedef std::multimap<MachineInstr*, unsigned>::iterator killed_iterator;
/// killed_begin/end - Get access to the range of registers killed by a
/// machine instruction.
- killed_iterator killed_begin(MachineInstr *MI) const {
+ killed_iterator killed_begin(MachineInstr *MI) {
return RegistersKilled.lower_bound(MI);
}
- killed_iterator killed_end(MachineInstr *MI) const {
+ killed_iterator killed_end(MachineInstr *MI) {
return RegistersKilled.upper_bound(MI);
}
+ std::pair<killed_iterator, killed_iterator>
+ killed_range(MachineInstr *MI) {
+ return RegistersKilled.equal_range(MI);
+ }
- killed_iterator dead_begin(MachineInstr *MI) const {
+ killed_iterator dead_begin(MachineInstr *MI) {
return RegistersDead.lower_bound(MI);
}
- killed_iterator dead_end(MachineInstr *MI) const {
+ killed_iterator dead_end(MachineInstr *MI) {
return RegistersDead.upper_bound(MI);
}
+ std::pair<killed_iterator, killed_iterator>
+ dead_range(MachineInstr *MI) {
+ return RegistersDead.equal_range(MI);
+ }
- /// addVirtualRegisterKill - Add information about the fact that the specified
+ //===--------------------------------------------------------------------===//
+ // API to update live variable information
+
+ /// addVirtualRegisterKilled - Add information about the fact that the
+ /// specified register is killed after being used by the specified
+ /// instruction.
+ ///
+ void addVirtualRegisterKilled(unsigned IncomingReg, MachineInstr *MI) {
+ RegistersKilled.insert(std::make_pair(MI, IncomingReg));
+ }
+
+ /// removeVirtualRegistersKilled - Remove all of the specified killed
+ /// registers from the live variable information.
+ void removeVirtualRegistersKilled(killed_iterator B, killed_iterator E) {
+ RegistersKilled.erase(B, E);
+ }
+
+ /// addVirtualRegisterDead - Add information about the fact that the specified
/// register is dead after being used by the specified instruction.
///
- void addVirtualRegisterKill(unsigned IncomingReg, MachineInstr *MI) {
+ void addVirtualRegisterDead(unsigned IncomingReg, MachineInstr *MI) {
RegistersDead.insert(std::make_pair(MI, IncomingReg));
+ }
+
+ /// removeVirtualRegistersKilled - Remove all of the specified killed
+ /// registers from the live variable information.
+ void removeVirtualRegistersDead(killed_iterator B, killed_iterator E) {
+ RegistersDead.erase(B, E);
}
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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