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Implement frc and floor

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This commit is contained in:
Zack Rusin 2007-10-18 07:03:37 -04:00
parent 1c955171c8
commit c6a1beb18f
3 changed files with 62 additions and 3 deletions
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51
src/mesa/pipe/llvm/instructions.cpp
View file

@ -16,6 +16,7 @@ Instructions::Instructions(llvm::Module *mod, llvm::BasicBlock *block)
m_llvmFSqrt = 0;
m_llvmFAbs = 0;
m_llvmPow = 0;
m_llvmFloor = 0;
}
llvm::Value * Instructions::add(llvm::Value *in1, llvm::Value *in2)
@ -311,3 +312,53 @@ llvm::Value * Instructions::ex2(llvm::Value *in)
return vectorFromVals(val, val, val, val);
}
llvm::Value * Instructions::callFloor(llvm::Value *val)
{
if (!m_llvmFloor) {
// predeclare the intrinsic
std::vector<const Type*> floorArgs;
floorArgs.push_back(Type::FloatTy);
ParamAttrsList *floorPal = 0;
FunctionType* floorType = FunctionType::get(
/*Result=*/Type::FloatTy,
/*Params=*/floorArgs,
/*isVarArg=*/false,
/*ParamAttrs=*/floorPal);
m_llvmFloor = new Function(
/*Type=*/floorType,
/*Linkage=*/GlobalValue::ExternalLinkage,
/*Name=*/"floorf", m_mod);
m_llvmFloor->setCallingConv(CallingConv::C);
}
CallInst *call = new CallInst(m_llvmFloor, val,
name("floorf"),
m_block);
call->setCallingConv(CallingConv::C);
call->setTailCall(false);
return call;
}
llvm::Value * Instructions::floor(llvm::Value *in)
{
ExtractElementInst *x = new ExtractElementInst(in, unsigned(0),
name("extractx"),
m_block);
ExtractElementInst *y = new ExtractElementInst(in, unsigned(1),
name("extracty"),
m_block);
ExtractElementInst *z = new ExtractElementInst(in, unsigned(2),
name("extractz"),
m_block);
ExtractElementInst *w = new ExtractElementInst(in, unsigned(3),
name("extractw"),
m_block);
return vectorFromVals(callFloor(x), callFloor(y),
callFloor(z), callFloor(w));
}
llvm::Value * Instructions::frc(llvm::Value *in)
{
llvm::Value *flr = floor(in);
return sub(in, flr);
}

6
src/mesa/pipe/llvm/instructions.h
View file

@ -20,6 +20,8 @@ public:
llvm::Value *dph(llvm::Value *in1, llvm::Value *in2);
llvm::Value *dst(llvm::Value *in1, llvm::Value *in2);
llvm::Value *ex2(llvm::Value *in1);
llvm::Value *floor(llvm::Value *in1);
llvm::Value *frc(llvm::Value *in1);
llvm::Value *lit(llvm::Value *in1);
llvm::Value *madd(llvm::Value *in1, llvm::Value *in2,
llvm::Value *in2);
@ -31,8 +33,9 @@ public:
private:
const char *name(const char *prefix);
llvm::Value *callFSqrt(llvm::Value *val);
llvm::Value *callFAbs(llvm::Value *val);
llvm::Value *callFloor(llvm::Value *val);
llvm::Value *callFSqrt(llvm::Value *val);
llvm::Value *callPow(llvm::Value *val1, llvm::Value *val2);
llvm::Value *vectorFromVals(llvm::Value *x, llvm::Value *y,
@ -48,6 +51,7 @@ private:
llvm::Function *m_llvmFSqrt;
llvm::Function *m_llvmFAbs;
llvm::Function *m_llvmPow;
llvm::Function *m_llvmFloor;
};
#endif

8
src/mesa/pipe/llvm/llvmtgsi.cpp
View file

@ -241,11 +241,15 @@ translate_instruction(llvm::Module *module,
break;
case TGSI_OPCODE_NEGATE:
break;
case TGSI_OPCODE_FRAC:
case TGSI_OPCODE_FRAC: {
out = instr->frc(inputs[0]);
}
break;
case TGSI_OPCODE_CLAMP:
break;
case TGSI_OPCODE_FLOOR:
case TGSI_OPCODE_FLOOR: {
out = instr->floor(inputs[0]);
}
break;
case TGSI_OPCODE_ROUND:
break;