mirror of https://github.com/ZDoom/gzdoom.git
144 lines
3.8 KiB
C++
144 lines
3.8 KiB
C++
/*
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** SSA float32
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** Copyright (c) 2016 Magnus Norddahl
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**
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** This software is provided 'as-is', without any express or implied
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** warranty. In no event will the authors be held liable for any damages
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** arising from the use of this software.
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**
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** Permission is granted to anyone to use this software for any purpose,
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** including commercial applications, and to alter it and redistribute it
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** freely, subject to the following restrictions:
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**
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** 1. The origin of this software must not be misrepresented; you must not
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** claim that you wrote the original software. If you use this software
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** in a product, an acknowledgment in the product documentation would be
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** appreciated but is not required.
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** 2. Altered source versions must be plainly marked as such, and must not be
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** misrepresented as being the original software.
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** 3. This notice may not be removed or altered from any source distribution.
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**
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*/
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#include "precomp.h"
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#include "ssa_float.h"
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#include "ssa_int.h"
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#include "ssa_scope.h"
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#include "ssa_bool.h"
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#include "ssa_vec4f.h"
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SSAFloat::SSAFloat()
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: v(0)
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{
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}
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SSAFloat::SSAFloat(float constant)
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: v(0)
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{
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v = llvm::ConstantFP::get(SSAScope::context(), llvm::APFloat(constant));
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}
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SSAFloat::SSAFloat(SSAInt i)
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: v(0)
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{
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v = SSAScope::builder().CreateSIToFP(i.v, llvm::Type::getFloatTy(SSAScope::context()), SSAScope::hint());
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}
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SSAFloat::SSAFloat(llvm::Value *v)
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: v(v)
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{
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}
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llvm::Type *SSAFloat::llvm_type()
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{
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return llvm::Type::getFloatTy(SSAScope::context());
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}
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SSAFloat SSAFloat::rsqrt(SSAFloat f)
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{
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#ifdef ARM_TARGET
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//return SSAFloat::from_llvm(SSAScope::builder().CreateCall(SSAScope::intrinsic(llvm::Intrinsic::aarch64_neon_frsqrts), f.v, SSAScope::hint()));
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return SSAFloat(1.0f) / (f * SSAFloat(0.01f));
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#else
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llvm::Value *f_ss = SSAScope::builder().CreateInsertElement(llvm::UndefValue::get(SSAVec4f::llvm_type()), f.v, llvm::ConstantInt::get(SSAScope::context(), llvm::APInt(32, (uint64_t)0)));
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f_ss = SSAScope::builder().CreateCall(SSAScope::intrinsic(llvm::Intrinsic::x86_sse_rsqrt_ss), f_ss, SSAScope::hint());
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return SSAFloat::from_llvm(SSAScope::builder().CreateExtractElement(f_ss, SSAInt(0).v, SSAScope::hint()));
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#endif
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}
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SSAFloat SSAFloat::MIN(SSAFloat a, SSAFloat b)
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{
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return SSAFloat::from_llvm(SSAScope::builder().CreateSelect((a < b).v, a.v, b.v, SSAScope::hint()));
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}
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SSAFloat SSAFloat::MAX(SSAFloat a, SSAFloat b)
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{
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return SSAFloat::from_llvm(SSAScope::builder().CreateSelect((a > b).v, a.v, b.v, SSAScope::hint()));
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}
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SSAFloat SSAFloat::clamp(SSAFloat a, SSAFloat b, SSAFloat c)
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{
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return SSAFloat::MAX(SSAFloat::MIN(a, c), b);
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}
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SSAFloat operator+(const SSAFloat &a, const SSAFloat &b)
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{
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return SSAFloat::from_llvm(SSAScope::builder().CreateFAdd(a.v, b.v, SSAScope::hint()));
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}
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SSAFloat operator-(const SSAFloat &a, const SSAFloat &b)
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{
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return SSAFloat::from_llvm(SSAScope::builder().CreateFSub(a.v, b.v, SSAScope::hint()));
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}
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SSAFloat operator*(const SSAFloat &a, const SSAFloat &b)
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{
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return SSAFloat::from_llvm(SSAScope::builder().CreateFMul(a.v, b.v, SSAScope::hint()));
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}
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SSAFloat operator/(const SSAFloat &a, const SSAFloat &b)
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{
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return SSAFloat::from_llvm(SSAScope::builder().CreateFDiv(a.v, b.v, SSAScope::hint()));
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}
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SSAFloat operator+(float a, const SSAFloat &b)
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{
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return SSAFloat(a) + b;
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}
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SSAFloat operator-(float a, const SSAFloat &b)
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{
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return SSAFloat(a) - b;
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}
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SSAFloat operator*(float a, const SSAFloat &b)
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{
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return SSAFloat(a) * b;
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}
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SSAFloat operator/(float a, const SSAFloat &b)
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{
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return SSAFloat(a) / b;
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}
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SSAFloat operator+(const SSAFloat &a, float b)
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{
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return a + SSAFloat(b);
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}
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SSAFloat operator-(const SSAFloat &a, float b)
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{
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return a - SSAFloat(b);
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}
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SSAFloat operator*(const SSAFloat &a, float b)
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{
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return a * SSAFloat(b);
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}
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SSAFloat operator/(const SSAFloat &a, float b)
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{
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return a / SSAFloat(b);
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}
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