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-rw-r--r--src/3rdparty/angle/src/compiler/translator/PruneNoOps.cpp156
1 files changed, 0 insertions, 156 deletions
diff --git a/src/3rdparty/angle/src/compiler/translator/PruneNoOps.cpp b/src/3rdparty/angle/src/compiler/translator/PruneNoOps.cpp
deleted file mode 100644
index 6c9a02cd1c..0000000000
--- a/src/3rdparty/angle/src/compiler/translator/PruneNoOps.cpp
+++ /dev/null
@@ -1,156 +0,0 @@
-//
-// Copyright (c) 2002-2015 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.
-//
-// PruneNoOps.cpp: The PruneNoOps function prunes:
-// 1. Empty declarations "int;". Empty declarators will be pruned as well, so for example:
-// int , a;
-// is turned into
-// int a;
-// 2. Literal statements: "1.0;". The ESSL output doesn't define a default precision for float,
-// so float literal statements would end up with no precision which is invalid ESSL.
-
-#include "compiler/translator/PruneNoOps.h"
-
-#include "compiler/translator/IntermTraverse.h"
-
-namespace sh
-{
-
-namespace
-{
-
-bool IsNoOp(TIntermNode *node)
-{
- if (node->getAsConstantUnion() != nullptr)
- {
- return true;
- }
- bool isEmptyDeclaration = node->getAsDeclarationNode() != nullptr &&
- node->getAsDeclarationNode()->getSequence()->empty();
- if (isEmptyDeclaration)
- {
- return true;
- }
- return false;
-}
-
-class PruneNoOpsTraverser : private TIntermTraverser
-{
- public:
- static void apply(TIntermBlock *root);
-
- private:
- PruneNoOpsTraverser();
- bool visitDeclaration(Visit, TIntermDeclaration *node) override;
- bool visitBlock(Visit visit, TIntermBlock *node) override;
- bool visitLoop(Visit visit, TIntermLoop *loop) override;
-};
-
-void PruneNoOpsTraverser::apply(TIntermBlock *root)
-{
- PruneNoOpsTraverser prune;
- root->traverse(&prune);
- prune.updateTree();
-}
-
-PruneNoOpsTraverser::PruneNoOpsTraverser() : TIntermTraverser(true, false, false)
-{
-}
-
-bool PruneNoOpsTraverser::visitDeclaration(Visit, TIntermDeclaration *node)
-{
- TIntermSequence *sequence = node->getSequence();
- if (sequence->size() >= 1)
- {
- TIntermSymbol *sym = sequence->front()->getAsSymbolNode();
- // Prune declarations without a variable name, unless it's an interface block declaration.
- if (sym != nullptr && sym->getSymbol() == "" && !sym->isInterfaceBlock())
- {
- if (sequence->size() > 1)
- {
- // Generate a replacement that will remove the empty declarator in the beginning of
- // a declarator list. Example of a declaration that will be changed:
- // float, a;
- // will be changed to
- // float a;
- // This applies also to struct declarations.
- TIntermSequence emptyReplacement;
- mMultiReplacements.push_back(
- NodeReplaceWithMultipleEntry(node, sym, emptyReplacement));
- }
- else if (sym->getBasicType() != EbtStruct)
- {
- // If there are entirely empty non-struct declarations, they result in
- // TIntermDeclaration nodes without any children in the parsing stage. These are
- // handled in visitBlock and visitLoop.
- UNREACHABLE();
- }
- else if (sym->getType().getQualifier() != EvqGlobal &&
- sym->getType().getQualifier() != EvqTemporary)
- {
- // Single struct declarations may just declare the struct type and no variables, so
- // they should not be pruned. Here we handle an empty struct declaration with a
- // qualifier, for example like this:
- // const struct a { int i; };
- // NVIDIA GL driver version 367.27 doesn't accept this kind of declarations, so we
- // convert the declaration to a regular struct declaration. This is okay, since ESSL
- // 1.00 spec section 4.1.8 says about structs that "The optional qualifiers only
- // apply to any declarators, and are not part of the type being defined for name."
-
- if (mInGlobalScope)
- {
- sym->getTypePointer()->setQualifier(EvqGlobal);
- }
- else
- {
- sym->getTypePointer()->setQualifier(EvqTemporary);
- }
- }
- }
- }
- return false;
-}
-
-bool PruneNoOpsTraverser::visitBlock(Visit visit, TIntermBlock *node)
-{
- TIntermSequence *statements = node->getSequence();
-
- for (TIntermNode *statement : *statements)
- {
- if (IsNoOp(statement))
- {
- TIntermSequence emptyReplacement;
- mMultiReplacements.push_back(
- NodeReplaceWithMultipleEntry(node, statement, emptyReplacement));
- }
- }
-
- return true;
-}
-
-bool PruneNoOpsTraverser::visitLoop(Visit visit, TIntermLoop *loop)
-{
- TIntermTyped *expr = loop->getExpression();
- if (expr != nullptr && IsNoOp(expr))
- {
- loop->setExpression(nullptr);
- }
- TIntermNode *init = loop->getInit();
- if (init != nullptr && IsNoOp(init))
- {
- loop->setInit(nullptr);
- }
-
- return true;
-}
-
-} // namespace
-
-void PruneNoOps(TIntermBlock *root)
-{
- PruneNoOpsTraverser::apply(root);
-}
-
-} // namespace sh