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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240213 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
NAKAMURA Takumi 2015-06-20 06:22:04 +00:00
parent 3d378e625c
commit ac5e008dfd
1 changed files with 12 additions and 7 deletions
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19
lib/CodeGen/BranchFolding.cpp
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@ -273,8 +273,12 @@ static unsigned HashMachineInstr(const MachineInstr *MI) {
// Merge in bits from the operand if easy.
unsigned OperandHash = 0;
switch (Op.getType()) {
case MachineOperand::MO_Register: OperandHash = Op.getReg(); break;
case MachineOperand::MO_Immediate: OperandHash = Op.getImm(); break;
case MachineOperand::MO_Register:
OperandHash = Op.getReg();
break;
case MachineOperand::MO_Immediate:
OperandHash = Op.getImm();
break;
case MachineOperand::MO_MachineBasicBlock:
OperandHash = Op.getMBB()->getNumber();
break;
@ -289,10 +293,11 @@ static unsigned HashMachineInstr(const MachineInstr *MI) {
// pull in the offset.
OperandHash = Op.getOffset();
break;
default: break;
default:
break;
}
Hash += ((OperandHash << 3) | Op.getType()) << (i&31);
Hash += ((OperandHash << 3) | Op.getType()) << (i & 31);
}
return Hash;
}
@ -301,13 +306,13 @@ static unsigned HashMachineInstr(const MachineInstr *MI) {
static unsigned HashEndOfMBB(const MachineBasicBlock *MBB) {
MachineBasicBlock::const_iterator I = MBB->end();
if (I == MBB->begin())
return 0; // Empty MBB.
return 0; // Empty MBB.
--I;
// Skip debug info so it will not affect codegen.
while (I->isDebugValue()) {
if (I==MBB->begin())
return 0; // MBB empty except for debug info.
if (I == MBB->begin())
return 0; // MBB empty except for debug info.
--I;
}