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Added function UltraSparcInstrInfo::CreateCodeToCopyFloatToInt.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1226 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Vikram S. Adve 2001-11-09 02:16:40 +00:00
parent b7048409ae
commit 5b6082eccf
1 changed files with 53 additions and 19 deletions
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72
lib/Target/SparcV9/SparcV9InstrInfo.cpp
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@ -163,9 +163,9 @@ UltraSparcInstrInfo::CreateCodeToLoadConst(Value* val,
}
// Create an instruction sequence to copy an integer value `val' from an
// integer to a floating point register `dest'. val must be an integral
// type. dest must be a Float or Double.
// Create an instruction sequence to copy an integer value `val'
// to a floating point value `dest' by copying to memory and back.
// val must be an integral type. dest must be a Float or Double.
// The generated instructions are returned in `minstrVec'.
// Any temp. registers (TmpInstruction) created are returned in `tempVec'.
//
@ -177,7 +177,8 @@ UltraSparcInstrInfo::CreateCodeToCopyIntToFloat(Method* method,
vector<TmpInstruction*>& tempVec,
TargetMachine& target) const
{
assert(val->getType()->isIntegral() && "Source type must be integral");
assert((val->getType()->isIntegral() || val->getType()->isPointerType())
&& "Source type must be integral");
assert((dest->getType() ==Type::FloatTy || dest->getType() ==Type::DoubleTy)
&& "Dest type must be float/double");
@ -186,21 +187,11 @@ UltraSparcInstrInfo::CreateCodeToCopyIntToFloat(Method* method,
MachineCodeForMethod& mcinfo = MachineCodeForMethod::get(method);
int offset = mcinfo.allocateLocalVar(target, val);
// int offset = mcinfo.getOffset(val);
// if (offset == MAXINT)
// {
// offset = frameInfo.getFirstAutomaticVarOffsetFromFP(method)
// - mcinfo.getAutomaticVarsSize();
// mcinfo.putLocalVarAtOffsetFromFP(val, offset,
// target.findOptimalStorageSize(val->getType()));
// }
// Store instruction stores `val' to [%fp+offset].
// We could potentially use up to the full 64 bits of the integer register
// but since there are the same number of single-prec and double-prec regs,
// we can avoid over-using one of these types. So we make the store type
// the same size as the dest type:
// The store and load opCodes are based on the value being copied, and
// they use the integer type that matches the destination type in size:
// On SparcV9: int for float, long for double.
//
Type* tmpType = (dest->getType() == Type::FloatTy)? Type::IntTy
: Type::LongTy;
MachineInstr* store = new MachineInstr(ChooseStoreInstruction(tmpType));
@ -210,8 +201,51 @@ UltraSparcInstrInfo::CreateCodeToCopyIntToFloat(Method* method,
minstrVec.push_back(store);
// Load instruction loads [%fp+offset] to `dest'.
// The load instruction should have type of the value being loaded,
// not the destination register type.
//
MachineInstr* load = new MachineInstr(ChooseLoadInstruction(tmpType));
load->SetMachineOperand(0, target.getRegInfo().getFramePointer());
load->SetMachineOperand(1, MachineOperand::MO_SignExtendedImmed, offset);
load->SetMachineOperand(2, MachineOperand::MO_VirtualRegister, dest);
minstrVec.push_back(load);
}
// Similarly, create an instruction sequence to copy an FP value
// `val' to an integer value `dest' by copying to memory and back.
// See the previous function for information about return values.
//
void
UltraSparcInstrInfo::CreateCodeToCopyFloatToInt(Method* method,
Value* val,
Instruction* dest,
vector<MachineInstr*>& minstrVec,
vector<TmpInstruction*>& tempVec,
TargetMachine& target) const
{
assert((val->getType() ==Type::FloatTy || val->getType() ==Type::DoubleTy)
&& "Source type must be float/double");
assert((dest->getType()->isIntegral() || dest->getType()->isPointerType())
&& "Dest type must be integral");
const MachineFrameInfo& frameInfo = ((UltraSparc&) target).getFrameInfo();
MachineCodeForMethod& mcinfo = MachineCodeForMethod::get(method);
int offset = mcinfo.allocateLocalVar(target, val);
// Store instruction stores `val' to [%fp+offset].
// The store and load opCodes are based on the value being copied, and
// they use the integer type that matches the source type in size:
// On SparcV9: int for float, long for double.
//
Type* tmpType = (val->getType() == Type::FloatTy)? Type::IntTy
: Type::LongTy;
MachineInstr* store = new MachineInstr(ChooseStoreInstruction(tmpType));
store->SetMachineOperand(0, MachineOperand::MO_VirtualRegister, val);
store->SetMachineOperand(1, target.getRegInfo().getFramePointer());
store->SetMachineOperand(2, MachineOperand::MO_SignExtendedImmed, offset);
minstrVec.push_back(store);
// Load instruction loads [%fp+offset] to `dest'.
//
MachineInstr* load = new MachineInstr(ChooseLoadInstruction(tmpType));
load->SetMachineOperand(0, target.getRegInfo().getFramePointer());