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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /gfx/angle/checkout/src/compiler/translator/tree_ops/apple/RewriteUnaryMinusOperatorFloat.cpp | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/angle/checkout/src/compiler/translator/tree_ops/apple/RewriteUnaryMinusOperatorFloat.cpp')
-rw-r--r-- | gfx/angle/checkout/src/compiler/translator/tree_ops/apple/RewriteUnaryMinusOperatorFloat.cpp | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/compiler/translator/tree_ops/apple/RewriteUnaryMinusOperatorFloat.cpp b/gfx/angle/checkout/src/compiler/translator/tree_ops/apple/RewriteUnaryMinusOperatorFloat.cpp new file mode 100644 index 0000000000..4aa8a28203 --- /dev/null +++ b/gfx/angle/checkout/src/compiler/translator/tree_ops/apple/RewriteUnaryMinusOperatorFloat.cpp @@ -0,0 +1,97 @@ +// +// 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. +// + +#include "compiler/translator/tree_ops/apple/RewriteUnaryMinusOperatorFloat.h" + +#include "compiler/translator/tree_util/IntermNode_util.h" +#include "compiler/translator/tree_util/IntermTraverse.h" + +namespace sh +{ + +namespace +{ + +class Traverser : public TIntermTraverser +{ + public: + [[nodiscard]] static bool Apply(TCompiler *compiler, TIntermNode *root); + + private: + Traverser(); + bool visitUnary(Visit visit, TIntermUnary *node) override; + void nextIteration(); + + bool mFound = false; +}; + +// static +bool Traverser::Apply(TCompiler *compiler, TIntermNode *root) +{ + Traverser traverser; + do + { + traverser.nextIteration(); + root->traverse(&traverser); + if (traverser.mFound) + { + if (!traverser.updateTree(compiler, root)) + { + return false; + } + } + } while (traverser.mFound); + + return true; +} + +Traverser::Traverser() : TIntermTraverser(true, false, false) {} + +void Traverser::nextIteration() +{ + mFound = false; +} + +bool Traverser::visitUnary(Visit visit, TIntermUnary *node) +{ + if (mFound) + { + return false; + } + + // Detect if the current operator is unary minus operator. + if (node->getOp() != EOpNegative) + { + return true; + } + + // Detect if the current operand is a float variable. + TIntermTyped *fValue = node->getOperand(); + if (!fValue->getType().isScalarFloat()) + { + return true; + } + + // 0.0 - float + TIntermTyped *zero = CreateZeroNode(fValue->getType()); + zero->setLine(fValue->getLine()); + TIntermBinary *sub = new TIntermBinary(EOpSub, zero, fValue); + sub->setLine(fValue->getLine()); + + queueReplacement(sub, OriginalNode::IS_DROPPED); + + mFound = true; + return false; +} + +} // anonymous namespace + +bool RewriteUnaryMinusOperatorFloat(TCompiler *compiler, TIntermNode *root) +{ + return Traverser::Apply(compiler, root); +} + +} // namespace sh |