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authorwolfbeast <mcwerewolf@gmail.com>2018-07-11 18:11:13 +0200
committerwolfbeast <mcwerewolf@gmail.com>2018-07-11 18:11:13 +0200
commit4f2ecd53a9daaf88bb7d075745eefb6e2e4741e0 (patch)
treef000dd831240707a03b8c806db292c2a15cde3ce /gfx/angle/src/compiler/translator/ConstantUnion.cpp
parent3b7ffb477eec078c7036c92c6a51bb5de6de4f28 (diff)
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Roll back to ANGLE/2845
Diffstat (limited to 'gfx/angle/src/compiler/translator/ConstantUnion.cpp')
-rw-r--r--gfx/angle/src/compiler/translator/ConstantUnion.cpp642
1 files changed, 0 insertions, 642 deletions
diff --git a/gfx/angle/src/compiler/translator/ConstantUnion.cpp b/gfx/angle/src/compiler/translator/ConstantUnion.cpp
deleted file mode 100644
index 66f444b0b..000000000
--- a/gfx/angle/src/compiler/translator/ConstantUnion.cpp
+++ /dev/null
@@ -1,642 +0,0 @@
-//
-// Copyright 2016 The ANGLE Project Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-//
-// ConstantUnion: Constant folding helper class.
-
-#include "compiler/translator/ConstantUnion.h"
-
-#include "base/numerics/safe_math.h"
-#include "common/mathutil.h"
-#include "compiler/translator/Diagnostics.h"
-
-namespace sh
-{
-
-namespace
-{
-
-template <typename T>
-T CheckedSum(base::CheckedNumeric<T> lhs,
- base::CheckedNumeric<T> rhs,
- TDiagnostics *diag,
- const TSourceLoc &line)
-{
- ASSERT(lhs.IsValid() && rhs.IsValid());
- auto result = lhs + rhs;
- if (!result.IsValid())
- {
- diag->error(line, "Addition out of range", "*", "");
- return 0;
- }
- return result.ValueOrDefault(0);
-}
-
-template <typename T>
-T CheckedDiff(base::CheckedNumeric<T> lhs,
- base::CheckedNumeric<T> rhs,
- TDiagnostics *diag,
- const TSourceLoc &line)
-{
- ASSERT(lhs.IsValid() && rhs.IsValid());
- auto result = lhs - rhs;
- if (!result.IsValid())
- {
- diag->error(line, "Difference out of range", "*", "");
- return 0;
- }
- return result.ValueOrDefault(0);
-}
-
-template <typename T>
-T CheckedMul(base::CheckedNumeric<T> lhs,
- base::CheckedNumeric<T> rhs,
- TDiagnostics *diag,
- const TSourceLoc &line)
-{
- ASSERT(lhs.IsValid() && rhs.IsValid());
- auto result = lhs * rhs;
- if (!result.IsValid())
- {
- diag->error(line, "Multiplication out of range", "*", "");
- return 0;
- }
- return result.ValueOrDefault(0);
-}
-
-} // anonymous namespace
-
-TConstantUnion::TConstantUnion()
-{
- iConst = 0;
- type = EbtVoid;
-}
-
-bool TConstantUnion::cast(TBasicType newType, const TConstantUnion &constant)
-{
- switch (newType)
- {
- case EbtFloat:
- switch (constant.type)
- {
- case EbtInt:
- setFConst(static_cast<float>(constant.getIConst()));
- break;
- case EbtUInt:
- setFConst(static_cast<float>(constant.getUConst()));
- break;
- case EbtBool:
- setFConst(static_cast<float>(constant.getBConst()));
- break;
- case EbtFloat:
- setFConst(static_cast<float>(constant.getFConst()));
- break;
- default:
- return false;
- }
- break;
- case EbtInt:
- switch (constant.type)
- {
- case EbtInt:
- setIConst(static_cast<int>(constant.getIConst()));
- break;
- case EbtUInt:
- setIConst(static_cast<int>(constant.getUConst()));
- break;
- case EbtBool:
- setIConst(static_cast<int>(constant.getBConst()));
- break;
- case EbtFloat:
- setIConst(static_cast<int>(constant.getFConst()));
- break;
- default:
- return false;
- }
- break;
- case EbtUInt:
- switch (constant.type)
- {
- case EbtInt:
- setUConst(static_cast<unsigned int>(constant.getIConst()));
- break;
- case EbtUInt:
- setUConst(static_cast<unsigned int>(constant.getUConst()));
- break;
- case EbtBool:
- setUConst(static_cast<unsigned int>(constant.getBConst()));
- break;
- case EbtFloat:
- setUConst(static_cast<unsigned int>(constant.getFConst()));
- break;
- default:
- return false;
- }
- break;
- case EbtBool:
- switch (constant.type)
- {
- case EbtInt:
- setBConst(constant.getIConst() != 0);
- break;
- case EbtUInt:
- setBConst(constant.getUConst() != 0);
- break;
- case EbtBool:
- setBConst(constant.getBConst());
- break;
- case EbtFloat:
- setBConst(constant.getFConst() != 0.0f);
- break;
- default:
- return false;
- }
- break;
- case EbtStruct: // Struct fields don't get cast
- switch (constant.type)
- {
- case EbtInt:
- setIConst(constant.getIConst());
- break;
- case EbtUInt:
- setUConst(constant.getUConst());
- break;
- case EbtBool:
- setBConst(constant.getBConst());
- break;
- case EbtFloat:
- setFConst(constant.getFConst());
- break;
- default:
- return false;
- }
- break;
- default:
- return false;
- }
-
- return true;
-}
-
-bool TConstantUnion::operator==(const int i) const
-{
- return i == iConst;
-}
-
-bool TConstantUnion::operator==(const unsigned int u) const
-{
- return u == uConst;
-}
-
-bool TConstantUnion::operator==(const float f) const
-{
- return f == fConst;
-}
-
-bool TConstantUnion::operator==(const bool b) const
-{
- return b == bConst;
-}
-
-bool TConstantUnion::operator==(const TConstantUnion &constant) const
-{
- if (constant.type != type)
- return false;
-
- switch (type)
- {
- case EbtInt:
- return constant.iConst == iConst;
- case EbtUInt:
- return constant.uConst == uConst;
- case EbtFloat:
- return constant.fConst == fConst;
- case EbtBool:
- return constant.bConst == bConst;
- default:
- return false;
- }
-}
-
-bool TConstantUnion::operator!=(const int i) const
-{
- return !operator==(i);
-}
-
-bool TConstantUnion::operator!=(const unsigned int u) const
-{
- return !operator==(u);
-}
-
-bool TConstantUnion::operator!=(const float f) const
-{
- return !operator==(f);
-}
-
-bool TConstantUnion::operator!=(const bool b) const
-{
- return !operator==(b);
-}
-
-bool TConstantUnion::operator!=(const TConstantUnion &constant) const
-{
- return !operator==(constant);
-}
-
-bool TConstantUnion::operator>(const TConstantUnion &constant) const
-{
- ASSERT(type == constant.type);
- switch (type)
- {
- case EbtInt:
- return iConst > constant.iConst;
- case EbtUInt:
- return uConst > constant.uConst;
- case EbtFloat:
- return fConst > constant.fConst;
- default:
- return false; // Invalid operation, handled at semantic analysis
- }
-}
-
-bool TConstantUnion::operator<(const TConstantUnion &constant) const
-{
- ASSERT(type == constant.type);
- switch (type)
- {
- case EbtInt:
- return iConst < constant.iConst;
- case EbtUInt:
- return uConst < constant.uConst;
- case EbtFloat:
- return fConst < constant.fConst;
- default:
- return false; // Invalid operation, handled at semantic analysis
- }
-}
-
-// static
-TConstantUnion TConstantUnion::add(const TConstantUnion &lhs,
- const TConstantUnion &rhs,
- TDiagnostics *diag,
- const TSourceLoc &line)
-{
- TConstantUnion returnValue;
- ASSERT(lhs.type == rhs.type);
- switch (lhs.type)
- {
- case EbtInt:
- returnValue.setIConst(gl::WrappingSum<int>(lhs.iConst, rhs.iConst));
- break;
- case EbtUInt:
- returnValue.setUConst(gl::WrappingSum<unsigned int>(lhs.uConst, rhs.uConst));
- break;
- case EbtFloat:
- returnValue.setFConst(CheckedSum<float>(lhs.fConst, rhs.fConst, diag, line));
- break;
- default:
- UNREACHABLE();
- }
-
- return returnValue;
-}
-
-// static
-TConstantUnion TConstantUnion::sub(const TConstantUnion &lhs,
- const TConstantUnion &rhs,
- TDiagnostics *diag,
- const TSourceLoc &line)
-{
- TConstantUnion returnValue;
- ASSERT(lhs.type == rhs.type);
- switch (lhs.type)
- {
- case EbtInt:
- returnValue.setIConst(gl::WrappingDiff<int>(lhs.iConst, rhs.iConst));
- break;
- case EbtUInt:
- returnValue.setUConst(gl::WrappingDiff<unsigned int>(lhs.uConst, rhs.uConst));
- break;
- case EbtFloat:
- returnValue.setFConst(CheckedDiff<float>(lhs.fConst, rhs.fConst, diag, line));
- break;
- default:
- UNREACHABLE();
- }
-
- return returnValue;
-}
-
-// static
-TConstantUnion TConstantUnion::mul(const TConstantUnion &lhs,
- const TConstantUnion &rhs,
- TDiagnostics *diag,
- const TSourceLoc &line)
-{
- TConstantUnion returnValue;
- ASSERT(lhs.type == rhs.type);
- switch (lhs.type)
- {
- case EbtInt:
- returnValue.setIConst(gl::WrappingMul(lhs.iConst, rhs.iConst));
- break;
- case EbtUInt:
- // Unsigned integer math in C++ is defined to be done in modulo 2^n, so we rely on that
- // to implement wrapping multiplication.
- returnValue.setUConst(lhs.uConst * rhs.uConst);
- break;
- case EbtFloat:
- returnValue.setFConst(CheckedMul<float>(lhs.fConst, rhs.fConst, diag, line));
- break;
- default:
- UNREACHABLE();
- }
-
- return returnValue;
-}
-
-TConstantUnion TConstantUnion::operator%(const TConstantUnion &constant) const
-{
- TConstantUnion returnValue;
- ASSERT(type == constant.type);
- switch (type)
- {
- case EbtInt:
- returnValue.setIConst(iConst % constant.iConst);
- break;
- case EbtUInt:
- returnValue.setUConst(uConst % constant.uConst);
- break;
- default:
- UNREACHABLE();
- }
-
- return returnValue;
-}
-
-// static
-TConstantUnion TConstantUnion::rshift(const TConstantUnion &lhs,
- const TConstantUnion &rhs,
- TDiagnostics *diag,
- const TSourceLoc &line)
-{
- TConstantUnion returnValue;
- ASSERT(lhs.type == EbtInt || lhs.type == EbtUInt);
- ASSERT(rhs.type == EbtInt || rhs.type == EbtUInt);
- if ((rhs.type == EbtInt && (rhs.iConst < 0 || rhs.iConst > 31)) ||
- (rhs.type == EbtUInt && rhs.uConst > 31u))
- {
- diag->error(line, "Undefined shift (operand out of range)", ">>", "");
- switch (lhs.type)
- {
- case EbtInt:
- returnValue.setIConst(0);
- break;
- case EbtUInt:
- returnValue.setUConst(0u);
- break;
- default:
- UNREACHABLE();
- }
- return returnValue;
- }
-
- switch (lhs.type)
- {
- case EbtInt:
- {
- unsigned int shiftOffset = 0;
- switch (rhs.type)
- {
- case EbtInt:
- shiftOffset = static_cast<unsigned int>(rhs.iConst);
- break;
- case EbtUInt:
- shiftOffset = rhs.uConst;
- break;
- default:
- UNREACHABLE();
- }
- if (shiftOffset > 0)
- {
- // ESSL 3.00.6 section 5.9: "If E1 is a signed integer, the right-shift will extend
- // the sign bit." In C++ shifting negative integers is undefined, so we implement
- // extending the sign bit manually.
- int lhsSafe = lhs.iConst;
- if (lhsSafe == std::numeric_limits<int>::min())
- {
- // The min integer needs special treatment because only bit it has set is the
- // sign bit, which we clear later to implement safe right shift of negative
- // numbers.
- lhsSafe = -0x40000000;
- --shiftOffset;
- }
- if (shiftOffset > 0)
- {
- bool extendSignBit = false;
- if (lhsSafe < 0)
- {
- extendSignBit = true;
- // Clear the sign bit so that bitshift right is defined in C++.
- lhsSafe &= 0x7fffffff;
- ASSERT(lhsSafe > 0);
- }
- returnValue.setIConst(lhsSafe >> shiftOffset);
-
- // Manually fill in the extended sign bit if necessary.
- if (extendSignBit)
- {
- int extendedSignBit = static_cast<int>(0xffffffffu << (31 - shiftOffset));
- returnValue.setIConst(returnValue.getIConst() | extendedSignBit);
- }
- }
- else
- {
- returnValue.setIConst(lhsSafe);
- }
- }
- else
- {
- returnValue.setIConst(lhs.iConst);
- }
- break;
- }
- case EbtUInt:
- switch (rhs.type)
- {
- case EbtInt:
- returnValue.setUConst(lhs.uConst >> rhs.iConst);
- break;
- case EbtUInt:
- returnValue.setUConst(lhs.uConst >> rhs.uConst);
- break;
- default:
- UNREACHABLE();
- }
- break;
-
- default:
- UNREACHABLE();
- }
- return returnValue;
-}
-
-// static
-TConstantUnion TConstantUnion::lshift(const TConstantUnion &lhs,
- const TConstantUnion &rhs,
- TDiagnostics *diag,
- const TSourceLoc &line)
-{
- TConstantUnion returnValue;
- ASSERT(lhs.type == EbtInt || lhs.type == EbtUInt);
- ASSERT(rhs.type == EbtInt || rhs.type == EbtUInt);
- if ((rhs.type == EbtInt && (rhs.iConst < 0 || rhs.iConst > 31)) ||
- (rhs.type == EbtUInt && rhs.uConst > 31u))
- {
- diag->error(line, "Undefined shift (operand out of range)", "<<", "");
- switch (lhs.type)
- {
- case EbtInt:
- returnValue.setIConst(0);
- break;
- case EbtUInt:
- returnValue.setUConst(0u);
- break;
- default:
- UNREACHABLE();
- }
- return returnValue;
- }
-
- switch (lhs.type)
- {
- case EbtInt:
- switch (rhs.type)
- {
- // Cast to unsigned integer before shifting, since ESSL 3.00.6 section 5.9 says that
- // lhs is "interpreted as a bit pattern". This also avoids the possibility of signed
- // integer overflow or undefined shift of a negative integer.
- case EbtInt:
- returnValue.setIConst(
- static_cast<int>(static_cast<uint32_t>(lhs.iConst) << rhs.iConst));
- break;
- case EbtUInt:
- returnValue.setIConst(
- static_cast<int>(static_cast<uint32_t>(lhs.iConst) << rhs.uConst));
- break;
- default:
- UNREACHABLE();
- }
- break;
-
- case EbtUInt:
- switch (rhs.type)
- {
- case EbtInt:
- returnValue.setUConst(lhs.uConst << rhs.iConst);
- break;
- case EbtUInt:
- returnValue.setUConst(lhs.uConst << rhs.uConst);
- break;
- default:
- UNREACHABLE();
- }
- break;
-
- default:
- UNREACHABLE();
- }
- return returnValue;
-}
-
-TConstantUnion TConstantUnion::operator&(const TConstantUnion &constant) const
-{
- TConstantUnion returnValue;
- ASSERT(constant.type == EbtInt || constant.type == EbtUInt);
- switch (type)
- {
- case EbtInt:
- returnValue.setIConst(iConst & constant.iConst);
- break;
- case EbtUInt:
- returnValue.setUConst(uConst & constant.uConst);
- break;
- default:
- UNREACHABLE();
- }
-
- return returnValue;
-}
-
-TConstantUnion TConstantUnion::operator|(const TConstantUnion &constant) const
-{
- TConstantUnion returnValue;
- ASSERT(type == constant.type);
- switch (type)
- {
- case EbtInt:
- returnValue.setIConst(iConst | constant.iConst);
- break;
- case EbtUInt:
- returnValue.setUConst(uConst | constant.uConst);
- break;
- default:
- UNREACHABLE();
- }
-
- return returnValue;
-}
-
-TConstantUnion TConstantUnion::operator^(const TConstantUnion &constant) const
-{
- TConstantUnion returnValue;
- ASSERT(type == constant.type);
- switch (type)
- {
- case EbtInt:
- returnValue.setIConst(iConst ^ constant.iConst);
- break;
- case EbtUInt:
- returnValue.setUConst(uConst ^ constant.uConst);
- break;
- default:
- UNREACHABLE();
- }
-
- return returnValue;
-}
-
-TConstantUnion TConstantUnion::operator&&(const TConstantUnion &constant) const
-{
- TConstantUnion returnValue;
- ASSERT(type == constant.type);
- switch (type)
- {
- case EbtBool:
- returnValue.setBConst(bConst && constant.bConst);
- break;
- default:
- UNREACHABLE();
- }
-
- return returnValue;
-}
-
-TConstantUnion TConstantUnion::operator||(const TConstantUnion &constant) const
-{
- TConstantUnion returnValue;
- ASSERT(type == constant.type);
- switch (type)
- {
- case EbtBool:
- returnValue.setBConst(bConst || constant.bConst);
- break;
- default:
- UNREACHABLE();
- }
-
- return returnValue;
-}
-
-} // namespace sh