diff options
| author | Zack Rusin <zack@tungstengraphics.com> | 2007-10-18 07:20:27 -0400 |
|---|---|---|
| committer | Zack Rusin <zack@tungstengraphics.com> | 2007-10-24 11:21:04 -0400 |
| commit | 3ae767dd073e8c24fc159cb86f89e61ea7a0e85f (patch) | |
| tree | fa27a2d81093510454768c8a85d6b7697f904a92 /src/mesa/pipe/llvm/instructions.cpp | |
| parent | c6a1beb18fa5c556c3889f3a5ebdffe51981ad85 (diff) | |
Fix some warnings and implement lg2
Diffstat (limited to 'src/mesa/pipe/llvm/instructions.cpp')
| -rw-r--r-- | src/mesa/pipe/llvm/instructions.cpp | 55 |
1 files changed, 53 insertions, 2 deletions
diff --git a/src/mesa/pipe/llvm/instructions.cpp b/src/mesa/pipe/llvm/instructions.cpp index ee9104434f..d43a617d35 100644 --- a/src/mesa/pipe/llvm/instructions.cpp +++ b/src/mesa/pipe/llvm/instructions.cpp @@ -14,9 +14,10 @@ Instructions::Instructions(llvm::Module *mod, llvm::BasicBlock *block) m_floatVecType = VectorType::get(Type::FloatTy, 4); m_llvmFSqrt = 0; - m_llvmFAbs = 0; - m_llvmPow = 0; + m_llvmFAbs = 0; + m_llvmPow = 0; m_llvmFloor = 0; + m_llvmFlog = 0; } llvm::Value * Instructions::add(llvm::Value *in1, llvm::Value *in2) @@ -362,3 +363,53 @@ llvm::Value * Instructions::frc(llvm::Value *in) return sub(in, flr); } +llvm::Value * Instructions::callFLog(llvm::Value *val) +{ + if (!m_llvmFlog) { + // predeclare the intrinsic + std::vector<const Type*> flogArgs; + flogArgs.push_back(Type::FloatTy); + ParamAttrsList *flogPal = 0; + FunctionType* flogType = FunctionType::get( + /*Result=*/Type::FloatTy, + /*Params=*/flogArgs, + /*isVarArg=*/false, + /*ParamAttrs=*/flogPal); + m_llvmFlog = new Function( + /*Type=*/flogType, + /*Linkage=*/GlobalValue::ExternalLinkage, + /*Name=*/"logf", m_mod); + m_llvmFlog->setCallingConv(CallingConv::C); + } + CallInst *call = new CallInst(m_llvmFlog, val, + name("logf"), + m_block); + call->setCallingConv(CallingConv::C); + call->setTailCall(false); + return call; +} + +llvm::Value * Instructions::lg2(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); + llvm::Value *const_vec = vectorFromVals( + ConstantFP::get(Type::FloatTy, APFloat(1.442695f)), + ConstantFP::get(Type::FloatTy, APFloat(1.442695f)), + ConstantFP::get(Type::FloatTy, APFloat(1.442695f)), + ConstantFP::get(Type::FloatTy, APFloat(1.442695f)) + ); + return mul(vectorFromVals(callFLog(x), callFLog(y), + callFLog(z), callFLog(w)), const_vec); +} + |