Use GPRs for mints

runtime/vm/flow_graph_allocator.h

Index: runtime/vm/flow_graph_allocator.h
diff --git a/runtime/vm/flow_graph_allocator.h b/runtime/vm/flow_graph_allocator.h
index 348f69222b8244b2a54da8f238deb137497fcfc7..864258ff8f95e7a46a064a08f71ff75adc4306f7 100644
--- a/runtime/vm/flow_graph_allocator.h
+++ b/runtime/vm/flow_graph_allocator.h
@@ -113,7 +113,8 @@ class FlowGraphAllocator : public ValueObject {
                        intptr_t pos,
                        Location* in_ref,
                        Value* input,
-                       intptr_t vreg);
+                       intptr_t vreg,
+                       RegisterSet* live_registers);
   void ProcessOneOutput(BlockEntryInstr* block,
                         Instruction* current,
                         intptr_t pos,
@@ -497,6 +498,7 @@ class AllocationFinger : public ValueObject {
   Location FirstHint();
   UsePosition* FirstRegisterUse(intptr_t after_pos);
   UsePosition* FirstRegisterBeneficialUse(intptr_t after_pos);
+  UsePosition* FirstInterferingUse(intptr_t after_pos);
 
  private:
   UseInterval* first_pending_use_interval_;