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Take user function side-effects into account for unused pruner.

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This commit is contained in:
chriseth
2019-09-02 17:41:51 +02:00
parent 1c5845e3f2
commit 127bcfc69d
8 changed files with 72 additions and 26 deletions
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test/libyul/YulOptimizerTest.cpp
+4 -4
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@@ -222,7 +222,7 @@ TestCase::TestResult YulOptimizerTest::run(ostream& _stream, string const& _line
ForLoopInitRewriter{}(*m_ast);
CommonSubexpressionEliminator::run(*m_dialect, *m_ast);
ExpressionSimplifier::run(*m_dialect, *m_ast);
UnusedPruner::runUntilStabilised(*m_dialect, *m_ast);
UnusedPruner::runUntilStabilisedOnFullAST(*m_dialect, *m_ast);
DeadCodeEliminator{*m_dialect}(*m_ast);
ExpressionJoiner::run(*m_ast);
ExpressionJoiner::run(*m_ast);
@@ -230,7 +230,7 @@ TestCase::TestResult YulOptimizerTest::run(ostream& _stream, string const& _line
else if (m_optimizerStep == "unusedPruner")
{
disambiguate();
UnusedPruner::runUntilStabilised(*m_dialect, *m_ast);
UnusedPruner::runUntilStabilisedOnFullAST(*m_dialect, *m_ast);
}
else if (m_optimizerStep == "deadCodeEliminator")
{
@@ -267,7 +267,7 @@ TestCase::TestResult YulOptimizerTest::run(ostream& _stream, string const& _line
LoadResolver::run(*m_dialect, *m_ast);
UnusedPruner::runUntilStabilised(*m_dialect, *m_ast);
UnusedPruner::runUntilStabilisedOnFullAST(*m_dialect, *m_ast);
ExpressionJoiner::run(*m_ast);
ExpressionJoiner::run(*m_ast);
}
@@ -301,7 +301,7 @@ TestCase::TestResult YulOptimizerTest::run(ostream& _stream, string const& _line
// reverse SSA
SSAReverser::run(*m_ast);
CommonSubexpressionEliminator::run(*m_dialect, *m_ast);
UnusedPruner::runUntilStabilised(*m_dialect, *m_ast);
UnusedPruner::runUntilStabilisedOnFullAST(*m_dialect, *m_ast);
}
else if (m_optimizerStep == "stackCompressor")
{
test/libyul/yulOptimizerTests/unusedPruner/movable_user_defined_function.yul
+13
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@@ -0,0 +1,13 @@
{
function f(x) -> t {
let b := 7
}
function g(x) -> t {
t := x
}
let x := f(g(2))
}
// ====
// step: unusedPruner
// ----
// { }
test/tools/yulopti.cpp
+3 -1
View File
@@ -32,6 +32,7 @@
#include <libyul/optimiser/BlockFlattener.h>
#include <libyul/optimiser/Disambiguator.h>
#include <libyul/optimiser/CallGraphGenerator.h>
#include <libyul/optimiser/CommonSubexpressionEliminator.h>
#include <libyul/optimiser/ControlFlowSimplifier.h>
#include <libyul/optimiser/NameCollector.h>
@@ -54,6 +55,7 @@
#include <libyul/optimiser/SSATransform.h>
#include <libyul/optimiser/StackCompressor.h>
#include <libyul/optimiser/StructuralSimplifier.h>
#include <libyul/optimiser/Semantics.h>
#include <libyul/optimiser/VarDeclInitializer.h>
#include <libyul/optimiser/VarNameCleaner.h>
@@ -187,7 +189,7 @@ public:
(ControlFlowSimplifier{m_dialect})(*m_ast);
break;
case 'u':
UnusedPruner::runUntilStabilised(m_dialect, *m_ast);
UnusedPruner::runUntilStabilisedOnFullAST(m_dialect, *m_ast);
break;
case 'D':
DeadCodeEliminator{m_dialect}(*m_ast);