Bug 990106 part 5 - Assert lack of live uses of recover instructions. r=h4writer

js/src/jit/IonAnalysis.cpp

@@ -1385,11 +1385,6 @@ jit::AssertBasicGraphCoherency(MIRGraph &graph)
         for (size_t i = 0; i < block->numPredecessors(); i++)
             JS_ASSERT(CheckPredecessorImpliesSuccessor(*block, block->getPredecessor(i)));
 
-        // Assert that use chains are valid for this instruction.
-        for (MDefinitionIterator iter(*block); iter; iter++) {
-            for (uint32_t i = 0, e = iter->numOperands(); i < e; i++)
-                JS_ASSERT(CheckOperandImpliesUse(*iter, iter->getOperand(i)));
-        }
         for (MResumePointIterator iter(block->resumePointsBegin()); iter != block->resumePointsEnd(); iter++) {
             for (uint32_t i = 0, e = iter->numOperands(); i < e; i++) {
                 if (iter->getUseFor(i)->hasProducer())
@@ -1398,11 +1393,16 @@ jit::AssertBasicGraphCoherency(MIRGraph &graph)
         }
         for (MPhiIterator phi(block->phisBegin()); phi != block->phisEnd(); phi++) {
             JS_ASSERT(phi->numOperands() == block->numPredecessors());
+            MOZ_ASSERT(!phi->isRecoveredOnBailout());
         }
         for (MDefinitionIterator iter(*block); iter; iter++) {
             JS_ASSERT(iter->block() == *block);
-            for (MUseIterator i(iter->usesBegin()); i != iter->usesEnd(); i++)
-                JS_ASSERT(CheckUseImpliesOperand(*iter, *i));
+
+            // Assert that use chains are valid for this instruction.
+            for (uint32_t i = 0, end = iter->numOperands(); i < end; i++)
+                JS_ASSERT(CheckOperandImpliesUse(*iter, iter->getOperand(i)));
+            for (MUseIterator use(iter->usesBegin()); use != iter->usesEnd(); use++)
+                JS_ASSERT(CheckUseImpliesOperand(*iter, *use));
 
             if (iter->isInstruction()) {
                 if (MResumePoint *resume = iter->toInstruction()->resumePoint()) {
@@ -1410,6 +1410,9 @@ jit::AssertBasicGraphCoherency(MIRGraph &graph)
                         JS_ASSERT(ins->block() == iter->block());
                 }
             }
+
+            if (iter->isRecoveredOnBailout())
+                MOZ_ASSERT(!iter->hasLiveDefUses());
         }
     }