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Use std::vector instead of a hard-coded array. The length of that array could

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get *very* large, but we only need it to be the size of thenumber of pregs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108411 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling
2010-07-15 05:56:32 +00:00
parent bbcdebbc8d
commit f7f72bc1ea
2 changed files with 8 additions and 6 deletions
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lib/CodeGen/CriticalAntiDepBreaker.cpp
+4 -2
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@@ -34,6 +34,9 @@ CriticalAntiDepBreaker(MachineFunction& MFi) :
TRI(MF.getTarget().getRegisterInfo()),
AllocatableSet(TRI->getAllocatableSet(MF))
{
Classes.reserve(TRI->getNumRegs());
KillIndices.reserve(TRI->getNumRegs());
DefIndices.reserve(TRI->getNumRegs());
}
CriticalAntiDepBreaker::~CriticalAntiDepBreaker() {
@@ -41,8 +44,7 @@ CriticalAntiDepBreaker::~CriticalAntiDepBreaker() {
void CriticalAntiDepBreaker::StartBlock(MachineBasicBlock *BB) {
// Clear out the register class data.
std::fill(Classes, array_endof(Classes),
static_cast<const TargetRegisterClass *>(0));
Classes.clear();
// Initialize the indices to indicate that no registers are live.
const unsigned BBSize = BB->size();