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Stabilize SSAReverser.

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This commit is contained in:
Daniel Kirchner
2019-01-17 21:05:32 +01:00
parent fd16585724
commit 29f66b2674
8 changed files with 55 additions and 11 deletions
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libyul/optimiser/SSAReverser.cpp
+13 -2
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@@ -15,6 +15,7 @@
along with solidity. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libyul/optimiser/SSAReverser.h>
#include <libyul/optimiser/Metrics.h>
#include <libyul/AsmData.h>
#include <libdevcore/CommonData.h>
@@ -22,6 +23,13 @@ using namespace std;
using namespace dev;
using namespace yul;
void SSAReverser::run(Block& _block)
{
AssignmentCounter assignmentCounter;
assignmentCounter(_block);
SSAReverser{assignmentCounter}(_block);
}
void SSAReverser::operator()(Block& _block)
{
walkVector(_block.statements);
@@ -47,7 +55,7 @@ void SSAReverser::operator()(Block& _block)
assignment->variableNames.size() == 1 &&
identifier &&
identifier->name == varDecl->variables.front().name
)
)
{
vector<Statement> result;
result.emplace_back(Assignment{
@@ -75,7 +83,10 @@ void SSAReverser::operator()(Block& _block)
if (
varDecl2->variables.size() == 1 &&
identifier &&
identifier->name == varDecl->variables.front().name
identifier->name == varDecl->variables.front().name && (
m_assignmentCounter.assignmentCount(varDecl2->variables.front().name) >
m_assignmentCounter.assignmentCount(varDecl->variables.front().name)
)
)
{
vector<Statement> result;