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Use an IndexedMap instead of a DenseMap for the live-out cache.

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This speeds up updateSSA() so it only accounts for 5% of the live range
splitting time.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126972 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2011-03-04 00:15:36 +00:00
parent ac39bd534b
commit 13ba2dab63
3 changed files with 56 additions and 48 deletions
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9
include/llvm/CodeGen/MachineBasicBlock.h
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@ -16,6 +16,7 @@
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/ADT/GraphTraits.h"
#include <functional>
namespace llvm {
@ -411,6 +412,14 @@ raw_ostream& operator<<(raw_ostream &OS, const MachineBasicBlock &MBB);
void WriteAsOperand(raw_ostream &, const MachineBasicBlock*, bool t);
// This is useful when building IndexedMaps keyed on basic block pointers.
struct MBB2NumberFunctor :
public std::unary_function<const MachineBasicBlock*, unsigned> {
unsigned operator()(const MachineBasicBlock *MBB) const {
return MBB->getNumber();
}
};
//===--------------------------------------------------------------------===//
// GraphTraits specializations for machine basic block graphs (machine-CFGs)
//===--------------------------------------------------------------------===//