JavaScriptCore-7601.1.46.3.tar.gz

[apple/javascriptcore.git] / dfg / DFGVirtualRegisterAllocationPhase.cpp

diff --git a/dfg/DFGVirtualRegisterAllocationPhase.cpp b/dfg/DFGVirtualRegisterAllocationPhase.cpp
index 29310d3abd01282eeeae0c2dd909bb2ef7d3aebc..e5e133d43b54c222e400343035484246f1339c0b 100644 (file)
--- a/dfg/DFGVirtualRegisterAllocationPhase.cpp
+++ b/dfg/DFGVirtualRegisterAllocationPhase.cpp
@@ -45,6 +45,8 @@ public:
     
     bool run()
     {
     
     bool run()
     {

+        DFG_ASSERT(m_graph, nullptr, m_graph.m_form == ThreadedCPS);
+        

         ScoreBoard scoreBoard(m_graph.m_nextMachineLocal);
         scoreBoard.assertClear();
         for (size_t blockIndex = 0; blockIndex < m_graph.numBlocks(); ++blockIndex) {
         ScoreBoard scoreBoard(m_graph.m_nextMachineLocal);
         scoreBoard.assertClear();
         for (size_t blockIndex = 0; blockIndex < m_graph.numBlocks(); ++blockIndex) {


@@ -53,6 +55,10 @@ public:
                 continue;
             if (!block->isReachable)
                 continue;
                 continue;
             if (!block->isReachable)
                 continue;

+            if (!ASSERT_DISABLED) {
+                // Force usage of highest-numbered virtual registers.
+                scoreBoard.sortFree();
+            }

             for (size_t indexInBlock = 0; indexInBlock < block->size(); ++indexInBlock) {
                 Node* node = block->at(indexInBlock);
         
             for (size_t indexInBlock = 0; indexInBlock < block->size(); ++indexInBlock) {
                 Node* node = block->at(indexInBlock);