#include <msp/core/raii.h>
#include <msp/strings/format.h>
+#include <msp/strings/utils.h>
#include "optimize.h"
#include "reflect.h"
++count;
/* Don't inline functions which are called more than once or are called
recursively. */
- if(count>1 || def==current_function)
+ if((count>1 && def->source!=BUILTIN_SOURCE) || def==current_function)
inlineable.erase(def);
}
has_out_params = ((*i)->interface=="out");
unsigned &count = refcounts[func.definition];
- if(count<=1 && !has_out_params)
+ if((count<=1 || func.source==BUILTIN_SOURCE) && !has_out_params)
inlineable.insert(func.definition);
SetForScope<FunctionDeclaration *> set(current_function, &func);
pass(REFERENCED)
{ }
-const string &InlineContentInjector::apply(Stage &stage, FunctionDeclaration &target_func, Block &tgt_blk, const NodeList<Statement>::iterator &ins_pt, FunctionCall &call)
+string InlineContentInjector::apply(Stage &stage, FunctionDeclaration &target_func, Block &tgt_blk, const NodeList<Statement>::iterator &ins_pt, FunctionCall &call)
{
source_func = call.declaration->definition;
staging_block.parent = &tgt_blk;
staging_block.variables.clear();
- std::vector<RefPtr<VariableDeclaration> > params;
+ vector<RefPtr<VariableDeclaration> > params;
params.reserve(source_func->parameters.size());
for(NodeArray<VariableDeclaration>::iterator i=source_func->parameters.begin(); i!=source_func->parameters.end(); ++i)
{
}
-BasicTypeDeclaration::Kind ConstantFolder::get_value_kind(const Variant &value)
-{
- if(value.check_type<bool>())
- return BasicTypeDeclaration::BOOL;
- else if(value.check_type<int>())
- return BasicTypeDeclaration::INT;
- else if(value.check_type<float>())
- return BasicTypeDeclaration::FLOAT;
- else
- return BasicTypeDeclaration::VOID;
-}
-
template<typename T>
T ConstantFolder::evaluate_logical(char oper, T left, T right)
{
}
}
+template<typename T>
+T ConstantFolder::evaluate_int_special_op(char oper, T left, T right)
+{
+ switch(oper)
+ {
+ case '%': return left%right;
+ case '<': return left<<right;
+ case '>': return left>>right;
+ default: return T();
+ }
+}
+
+template<typename T>
+void ConstantFolder::convert_to_result(const Variant &value)
+{
+ if(value.check_type<bool>())
+ set_result(static_cast<T>(value.value<bool>()));
+ else if(value.check_type<int>())
+ set_result(static_cast<T>(value.value<int>()));
+ else if(value.check_type<unsigned>())
+ set_result(static_cast<T>(value.value<unsigned>()));
+ else if(value.check_type<float>())
+ set_result(static_cast<T>(value.value<float>()));
+}
+
void ConstantFolder::set_result(const Variant &value, bool literal)
{
r_constant_value = value;
if(!r_constant || r_literal || r_uses_iter_var)
return;
- BasicTypeDeclaration::Kind kind = get_value_kind(r_constant_value);
- if(kind==BasicTypeDeclaration::VOID)
- {
- r_constant = false;
- return;
- }
-
RefPtr<Literal> literal = new Literal;
- if(kind==BasicTypeDeclaration::BOOL)
+ if(r_constant_value.check_type<bool>())
literal->token = (r_constant_value.value<bool>() ? "true" : "false");
- else if(kind==BasicTypeDeclaration::INT)
+ else if(r_constant_value.check_type<int>())
literal->token = lexical_cast<string>(r_constant_value.value<int>());
- else if(kind==BasicTypeDeclaration::FLOAT)
+ else if(r_constant_value.check_type<unsigned>())
+ literal->token = lexical_cast<string>(r_constant_value.value<unsigned>())+"u";
+ else if(r_constant_value.check_type<float>())
+ {
literal->token = lexical_cast<string>(r_constant_value.value<float>());
+ if(isnumrc(literal->token))
+ literal->token += ".0";
+ }
+ else
+ {
+ r_constant = false;
+ return;
+ }
literal->value = r_constant_value;
expr = literal;
+ r_any_folded = true;
}
void ConstantFolder::visit(Literal &literal)
if(!can_fold)
return;
- BasicTypeDeclaration::Kind kind = get_value_kind(r_constant_value);
-
char oper = unary.oper->token[0];
char oper2 = unary.oper->token[1];
if(oper=='!')
{
- if(kind==BasicTypeDeclaration::BOOL)
+ if(r_constant_value.check_type<bool>())
set_result(!r_constant_value.value<bool>());
}
else if(oper=='~')
{
- if(kind==BasicTypeDeclaration::INT)
+ if(r_constant_value.check_type<int>())
set_result(~r_constant_value.value<int>());
+ else if(r_constant_value.check_type<unsigned>())
+ set_result(~r_constant_value.value<unsigned>());
}
else if(oper=='-' && !oper2)
{
- if(kind==BasicTypeDeclaration::INT)
+ if(r_constant_value.check_type<int>())
set_result(-r_constant_value.value<int>());
- else if(kind==BasicTypeDeclaration::FLOAT)
+ else if(r_constant_value.check_type<unsigned>())
+ set_result(-r_constant_value.value<unsigned>());
+ else if(r_constant_value.check_type<float>())
set_result(-r_constant_value.value<float>());
}
}
if(!can_fold)
return;
- BasicTypeDeclaration::Kind left_kind = get_value_kind(left_value);
- BasicTypeDeclaration::Kind right_kind = get_value_kind(r_constant_value);
// Currently only expressions with both sides of equal types are handled.
- if(left_kind!=right_kind)
+ if(!left_value.check_same_type(r_constant_value))
return;
char oper = binary.oper->token[0];
char oper2 = binary.oper->token[1];
if(oper=='&' || oper=='|' || oper=='^')
{
- if(oper2==oper && left_kind==BasicTypeDeclaration::BOOL)
+ if(oper2==oper && left_value.check_type<bool>())
set_result(evaluate_logical(oper, left_value.value<bool>(), r_constant_value.value<bool>()));
- else if(!oper2 && left_kind==BasicTypeDeclaration::INT)
+ else if(!oper2 && left_value.check_type<int>())
set_result(evaluate_logical(oper, left_value.value<int>(), r_constant_value.value<int>()));
+ else if(!oper2 && left_value.check_type<unsigned>())
+ set_result(evaluate_logical(oper, left_value.value<unsigned>(), r_constant_value.value<unsigned>()));
}
else if((oper=='<' || oper=='>') && oper2!=oper)
{
- if(left_kind==BasicTypeDeclaration::INT)
+ if(left_value.check_type<int>())
set_result(evaluate_relation(binary.oper->token, left_value.value<int>(), r_constant_value.value<int>()));
- else if(left_kind==BasicTypeDeclaration::FLOAT)
+ else if(left_value.check_type<unsigned>())
+ set_result(evaluate_relation(binary.oper->token, left_value.value<unsigned>(), r_constant_value.value<unsigned>()));
+ else if(left_value.check_type<float>())
set_result(evaluate_relation(binary.oper->token, left_value.value<float>(), r_constant_value.value<float>()));
}
else if((oper=='=' || oper=='!') && oper2=='=')
{
- if(left_kind==BasicTypeDeclaration::INT)
+ if(left_value.check_type<int>())
set_result((left_value.value<int>()==r_constant_value.value<int>()) == (oper=='='));
- if(left_kind==BasicTypeDeclaration::FLOAT)
+ else if(left_value.check_type<unsigned>())
+ set_result((left_value.value<unsigned>()==r_constant_value.value<unsigned>()) == (oper=='='));
+ else if(left_value.check_type<float>())
set_result((left_value.value<float>()==r_constant_value.value<float>()) == (oper=='='));
}
else if(oper=='+' || oper=='-' || oper=='*' || oper=='/')
{
- if(left_kind==BasicTypeDeclaration::INT)
+ if(left_value.check_type<int>())
set_result(evaluate_arithmetic(oper, left_value.value<int>(), r_constant_value.value<int>()));
- else if(left_kind==BasicTypeDeclaration::FLOAT)
+ else if(left_value.check_type<unsigned>())
+ set_result(evaluate_arithmetic(oper, left_value.value<unsigned>(), r_constant_value.value<unsigned>()));
+ else if(left_value.check_type<float>())
set_result(evaluate_arithmetic(oper, left_value.value<float>(), r_constant_value.value<float>()));
}
else if(oper=='%' || ((oper=='<' || oper=='>') && oper2==oper))
{
- if(left_kind!=BasicTypeDeclaration::INT)
- return;
-
- if(oper=='%')
- set_result(left_value.value<int>()%r_constant_value.value<int>());
- else if(oper=='<')
- set_result(left_value.value<int>()<<r_constant_value.value<int>());
- else if(oper=='>')
- set_result(left_value.value<int>()>>r_constant_value.value<int>());
+ if(left_value.check_type<int>())
+ set_result(evaluate_int_special_op(oper, left_value.value<int>(), r_constant_value.value<int>()));
+ else if(left_value.check_type<unsigned>())
+ set_result(evaluate_int_special_op(oper, left_value.value<unsigned>(), r_constant_value.value<unsigned>()));
}
}
void ConstantFolder::visit(FunctionCall &call)
{
+ if(call.constructor && call.type && call.arguments.size()==1)
+ {
+ const BasicTypeDeclaration *basic = dynamic_cast<const BasicTypeDeclaration *>(call.type);
+ if(basic)
+ {
+ call.arguments[0]->visit(*this);
+ bool can_fold = r_constant;
+ r_constant = false;
+ if(!can_fold)
+ return;
+
+ if(basic->kind==BasicTypeDeclaration::BOOL)
+ convert_to_result<bool>(r_constant_value);
+ else if(basic->kind==BasicTypeDeclaration::INT && basic->size==32 && basic->sign)
+ convert_to_result<int>(r_constant_value);
+ else if(basic->kind==BasicTypeDeclaration::INT && basic->size==32 && !basic->sign)
+ convert_to_result<unsigned>(r_constant_value);
+ else if(basic->kind==BasicTypeDeclaration::FLOAT && basic->size==32)
+ convert_to_result<float>(r_constant_value);
+
+ return;
+ }
+ }
+
TraversingVisitor::visit(call);
r_constant = false;
}
}
-bool UnusedTypeRemover::apply(Stage &stage)
+UnreachableCodeRemover::UnreachableCodeRemover():
+ reachable(true)
+{ }
+
+bool UnreachableCodeRemover::apply(Stage &stage)
{
stage.content.visit(*this);
- NodeRemover().apply(stage, unused_nodes);
- return !unused_nodes.empty();
+ NodeRemover().apply(stage, unreachable_nodes);
+ return !unreachable_nodes.empty();
}
-void UnusedTypeRemover::visit(Literal &literal)
+void UnreachableCodeRemover::visit(Block &block)
{
- unused_nodes.erase(literal.type);
+ NodeList<Statement>::iterator i = block.body.begin();
+ for(; (reachable && i!=block.body.end()); ++i)
+ (*i)->visit(*this);
+ for(; i!=block.body.end(); ++i)
+ unreachable_nodes.insert(i->get());
}
-void UnusedTypeRemover::visit(UnaryExpression &unary)
+void UnreachableCodeRemover::visit(FunctionDeclaration &func)
{
- unused_nodes.erase(unary.type);
- TraversingVisitor::visit(unary);
+ TraversingVisitor::visit(func);
+ reachable = true;
}
-void UnusedTypeRemover::visit(BinaryExpression &binary)
+void UnreachableCodeRemover::visit(Conditional &cond)
{
- unused_nodes.erase(binary.type);
- TraversingVisitor::visit(binary);
+ cond.body.visit(*this);
+ bool reachable_if_true = reachable;
+ reachable = true;
+ cond.else_body.visit(*this);
+
+ reachable |= reachable_if_true;
}
-void UnusedTypeRemover::visit(TernaryExpression &ternary)
+void UnreachableCodeRemover::visit(Iteration &iter)
{
- unused_nodes.erase(ternary.type);
- TraversingVisitor::visit(ternary);
+ TraversingVisitor::visit(iter);
+
+ /* Always consider code after a loop reachable, since there's no checking
+ for whether the loop executes. */
+ reachable = true;
}
-void UnusedTypeRemover::visit(FunctionCall &call)
+
+bool UnusedTypeRemover::apply(Stage &stage)
{
- unused_nodes.erase(call.type);
- TraversingVisitor::visit(call);
+ stage.content.visit(*this);
+ NodeRemover().apply(stage, unused_nodes);
+ return !unused_nodes.empty();
+}
+
+void UnusedTypeRemover::visit(RefPtr<Expression> &expr)
+{
+ unused_nodes.erase(expr->type);
+ TraversingVisitor::visit(expr);
}
void UnusedTypeRemover::visit(BasicTypeDeclaration &type)
void UnusedTypeRemover::visit(VariableDeclaration &var)
{
unused_nodes.erase(var.type_declaration);
+ TraversingVisitor::visit(var);
}
void UnusedTypeRemover::visit(InterfaceBlock &iface)
interface_block(0),
r_assignment(0),
assignment_target(false),
- r_side_effects(false)
+ r_side_effects(false),
+ in_struct(false),
+ composite_reference(false),
+ in_loop(0)
{ }
bool UnusedVariableRemover::apply(Stage &s)
var_info.referenced = true;
if(!assignment_target)
{
+ bool loop_external = false;
for(vector<AssignmentInfo *>::const_iterator i=var_info.assignments.begin(); i!=var_info.assignments.end(); ++i)
- (*i)->used_by.push_back(&node);
+ {
+ bool covered = true;
+ for(unsigned j=0; (covered && j<(*i)->target.chain_len && j<target.chain_len); ++j)
+ {
+ Assignment::Target::ChainType type1 = static_cast<Assignment::Target::ChainType>((*i)->target.chain[j]&0xC0);
+ Assignment::Target::ChainType type2 = static_cast<Assignment::Target::ChainType>(target.chain[j]&0xC0);
+ if(type1==Assignment::Target::SWIZZLE || type2==Assignment::Target::SWIZZLE)
+ {
+ unsigned index1 = (*i)->target.chain[j]&0x3F;
+ unsigned index2 = target.chain[j]&0x3F;
+ if(type1==Assignment::Target::SWIZZLE && type2==Assignment::Target::SWIZZLE)
+ covered = index1&index2;
+ else if(type1==Assignment::Target::ARRAY && index1<4)
+ covered = index2&(1<<index1);
+ else if(type2==Assignment::Target::ARRAY && index2<4)
+ covered = index1&(1<<index2);
+ /* If it's some other combination (shouldn't happen), leave
+ covered as true */
+ }
+ else
+ covered = ((*i)->target.chain[j]==target.chain[j]);
+ }
+
+ if(covered)
+ {
+ (*i)->used_by.push_back(&node);
+ if((*i)->in_loop<in_loop)
+ loop_external = true;
+ }
+ }
+
+ if(loop_external)
+ loop_ext_refs.push_back(&node);
}
}
void UnusedVariableRemover::visit(VariableReference &var)
{
- referenced(var.declaration, var);
+ if(composite_reference)
+ r_reference.declaration = var.declaration;
+ else
+ referenced(var.declaration, var);
}
void UnusedVariableRemover::visit(InterfaceBlockReference &iface)
{
- referenced(iface.declaration, iface);
+ if(composite_reference)
+ r_reference.declaration = iface.declaration;
+ else
+ referenced(iface.declaration, iface);
+}
+
+void UnusedVariableRemover::visit_composite(Expression &expr)
+{
+ if(!composite_reference)
+ r_reference = Assignment::Target();
+
+ SetFlag set_composite(composite_reference);
+ expr.visit(*this);
+}
+
+void UnusedVariableRemover::visit(MemberAccess &memacc)
+{
+ visit_composite(*memacc.left);
+
+ add_to_chain(r_reference, Assignment::Target::MEMBER, memacc.index);
+
+ if(!composite_reference && r_reference.declaration)
+ referenced(r_reference, memacc);
+}
+
+void UnusedVariableRemover::visit(Swizzle &swizzle)
+{
+ visit_composite(*swizzle.left);
+
+ unsigned mask = 0;
+ for(unsigned i=0; i<swizzle.count; ++i)
+ mask |= 1<<swizzle.components[i];
+ add_to_chain(r_reference, Assignment::Target::SWIZZLE, mask);
+
+ if(!composite_reference && r_reference.declaration)
+ referenced(r_reference, swizzle);
}
void UnusedVariableRemover::visit(UnaryExpression &unary)
{
if(binary.oper->token[0]=='[')
{
- binary.left->visit(*this);
- SetFlag set(assignment_target, false);
- binary.right->visit(*this);
+ visit_composite(*binary.left);
+
+ {
+ SetFlag clear_assignment(assignment_target, false);
+ SetFlag clear_composite(composite_reference, false);
+ binary.right->visit(*this);
+ }
+
+ add_to_chain(r_reference, Assignment::Target::ARRAY, 0x3F);
+
+ if(!composite_reference && r_reference.declaration)
+ referenced(r_reference, binary);
}
else
+ {
+ SetFlag clear_composite(composite_reference, false);
TraversingVisitor::visit(binary);
+ }
+}
+
+void UnusedVariableRemover::visit(TernaryExpression &ternary)
+{
+ SetFlag clear_composite(composite_reference, false);
+ TraversingVisitor::visit(ternary);
}
void UnusedVariableRemover::visit(Assignment &assign)
void UnusedVariableRemover::visit(FunctionCall &call)
{
+ SetFlag clear_composite(composite_reference, false);
TraversingVisitor::visit(call);
/* Treat function calls as having side effects so expression statements
consisting of nothing but a function call won't be optimized away. */
AssignmentInfo &assign_info = assignments.back();
assign_info.node = &node;
assign_info.target = target;
+ assign_info.in_loop = in_loop;
/* An assignment to the target hides any assignments to the same target or
its subfields. */
unused_nodes.insert(&expr);
}
+void UnusedVariableRemover::visit(StructDeclaration &strct)
+{
+ SetFlag set_struct(in_struct);
+ TraversingVisitor::visit(strct);
+}
+
void UnusedVariableRemover::visit(VariableDeclaration &var)
{
+ TraversingVisitor::visit(var);
+
+ if(in_struct)
+ return;
+
VariableInfo &var_info = variables[&var];
var_info.interface_block = interface_block;
var_info.initialized = true;
record_assignment(&var, *var.init_expression);
}
- TraversingVisitor::visit(var);
}
void UnusedVariableRemover::visit(InterfaceBlock &iface)
void UnusedVariableRemover::visit(Iteration &iter)
{
BlockVariableMap saved_vars = variables;
- TraversingVisitor::visit(iter);
+ vector<Node *> saved_refs;
+ swap(loop_ext_refs, saved_refs);
+ {
+ SetForScope<unsigned> set_loop(in_loop, in_loop+1);
+ TraversingVisitor::visit(iter);
+ }
+ swap(loop_ext_refs, saved_refs);
+
+ /* Visit the external references of the loop again to record assignments
+ done in the loop as used. */
+ for(vector<Node *>::const_iterator i=saved_refs.begin(); i!=saved_refs.end(); ++i)
+ (*i)->visit(*this);
/* Merge assignments from the iteration, without clearing previous state.
Further analysis is needed to determine which parts of the iteration body
projects / libs / gl.git / blobdiff