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* Speed up canUseAsImmediateForOpcode() by comparing Operand before

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dyn_cast<>ing and checking Constant's value
* Convert tabs to spaces


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15086 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Misha Brukman 2004-07-21 20:22:06 +00:00
parent f0cacc0ae7
commit 17a9000ac8
2 changed files with 38 additions and 38 deletions
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32
lib/Target/PowerPC/PPC32ISelSimple.cpp
View File

@ -431,31 +431,31 @@ bool ISel::canUseAsImmediateForOpcode(ConstantInt *CI, unsigned Operator)
ConstantUInt *Op1Cu;
// ADDI, Compare, and non-indexed Load take SIMM
bool cond1 = (Op1Cs = dyn_cast<ConstantSInt>(CI))
bool cond1 = (Operator == 0)
&& (Op1Cs = dyn_cast<ConstantSInt>(CI))
&& (Op1Cs->getValue() <= 32767)
&& (Op1Cs->getValue() >= -32768)
&& (Operator == 0);
&& (Op1Cs->getValue() >= -32768);
// SUBI takes -SIMM since it is a mnemonic for ADDI
bool cond2 = (Op1Cs = dyn_cast<ConstantSInt>(CI))
bool cond2 = (Operator == 1)
&& (Op1Cs = dyn_cast<ConstantSInt>(CI))
&& (Op1Cs->getValue() <= 32768)
&& (Op1Cs->getValue() >= -32767)
&& (Operator == 1);
&& (Op1Cs->getValue() >= -32767);
// ANDIo, ORI, and XORI take unsigned values
bool cond3 = (Op1Cs = dyn_cast<ConstantSInt>(CI))
&& (Op1Cs->getValue() <= 32767)
&& (Operator >= 2);
bool cond3 = (Operator >= 2)
&& (Op1Cs = dyn_cast<ConstantSInt>(CI))
&& (Op1Cs->getValue() <= 32767);
// ADDI and SUBI take SIMMs, so we have to make sure the UInt would fit
bool cond4 = (Op1Cu = dyn_cast<ConstantUInt>(CI))
&& (Op1Cu->getValue() <= 32767)
&& (Operator < 2);
bool cond4 = (Operator < 2)
&& (Op1Cu = dyn_cast<ConstantUInt>(CI))
&& (Op1Cu->getValue() <= 32767);
// ANDIo, ORI, and XORI take UIMMs, so they can be larger
bool cond5 = (Op1Cu = dyn_cast<ConstantUInt>(CI))
&& (Op1Cu->getValue() <= 65535)
&& (Operator >= 2);
bool cond5 = (Operator >= 2)
&& (Op1Cu = dyn_cast<ConstantUInt>(CI))
&& (Op1Cu->getValue() <= 65535);
if (cond1 || cond2 || cond3 || cond4 || cond5)
return true;
@ -2699,7 +2699,7 @@ void ISel::visitGetElementPtrInst(GetElementPtrInst &I) {
/// emitGEPOperation - Common code shared between visitGetElementPtrInst and
/// constant expression GEP support.
///
void ISel::emitGEPOperation (MachineBasicBlock *MBB,
void ISel::emitGEPOperation(MachineBasicBlock *MBB,
MachineBasicBlock::iterator IP,
Value *Src, User::op_iterator IdxBegin,
User::op_iterator IdxEnd, unsigned TargetReg) {

32
lib/Target/PowerPC/PowerPCISelSimple.cpp
View File

@ -431,31 +431,31 @@ bool ISel::canUseAsImmediateForOpcode(ConstantInt *CI, unsigned Operator)
ConstantUInt *Op1Cu;
// ADDI, Compare, and non-indexed Load take SIMM
bool cond1 = (Op1Cs = dyn_cast<ConstantSInt>(CI))
bool cond1 = (Operator == 0)
&& (Op1Cs = dyn_cast<ConstantSInt>(CI))
&& (Op1Cs->getValue() <= 32767)
&& (Op1Cs->getValue() >= -32768)
&& (Operator == 0);
&& (Op1Cs->getValue() >= -32768);
// SUBI takes -SIMM since it is a mnemonic for ADDI
bool cond2 = (Op1Cs = dyn_cast<ConstantSInt>(CI))
bool cond2 = (Operator == 1)
&& (Op1Cs = dyn_cast<ConstantSInt>(CI))
&& (Op1Cs->getValue() <= 32768)
&& (Op1Cs->getValue() >= -32767)
&& (Operator == 1);
&& (Op1Cs->getValue() >= -32767);
// ANDIo, ORI, and XORI take unsigned values
bool cond3 = (Op1Cs = dyn_cast<ConstantSInt>(CI))
&& (Op1Cs->getValue() <= 32767)
&& (Operator >= 2);
bool cond3 = (Operator >= 2)
&& (Op1Cs = dyn_cast<ConstantSInt>(CI))
&& (Op1Cs->getValue() <= 32767);
// ADDI and SUBI take SIMMs, so we have to make sure the UInt would fit
bool cond4 = (Op1Cu = dyn_cast<ConstantUInt>(CI))
&& (Op1Cu->getValue() <= 32767)
&& (Operator < 2);
bool cond4 = (Operator < 2)
&& (Op1Cu = dyn_cast<ConstantUInt>(CI))
&& (Op1Cu->getValue() <= 32767);
// ANDIo, ORI, and XORI take UIMMs, so they can be larger
bool cond5 = (Op1Cu = dyn_cast<ConstantUInt>(CI))
&& (Op1Cu->getValue() <= 65535)
&& (Operator >= 2);
bool cond5 = (Operator >= 2)
&& (Op1Cu = dyn_cast<ConstantUInt>(CI))
&& (Op1Cu->getValue() <= 65535);
if (cond1 || cond2 || cond3 || cond4 || cond5)
return true;
@ -2699,7 +2699,7 @@ void ISel::visitGetElementPtrInst(GetElementPtrInst &I) {
/// emitGEPOperation - Common code shared between visitGetElementPtrInst and
/// constant expression GEP support.
///
void ISel::emitGEPOperation (MachineBasicBlock *MBB,
void ISel::emitGEPOperation(MachineBasicBlock *MBB,
MachineBasicBlock::iterator IP,
Value *Src, User::op_iterator IdxBegin,
User::op_iterator IdxEnd, unsigned TargetReg) {