Instrinsics on object pool architectures must preserve CODE_REG.

runtime/vm/flow_graph_compiler.cc

Index: runtime/vm/flow_graph_compiler.cc
diff --git a/runtime/vm/flow_graph_compiler.cc b/runtime/vm/flow_graph_compiler.cc
index 79d9e6158730f4c3ed159f0638931ce408669345..4c6b4b7f32cd63a9a9bb35b52d880fb34838d7d1 100644
--- a/runtime/vm/flow_graph_compiler.cc
+++ b/runtime/vm/flow_graph_compiler.cc
@@ -1553,6 +1553,11 @@ ParallelMoveResolver::ScratchRegisterScope::ScratchRegisterScope(
   if (resolver->compiler_->intrinsic_mode()) {
     // Block additional registers that must be preserved for intrinsics.
     blocked_mask |= RegMaskBit(ARGS_DESC_REG);
+#if !defined(TARGET_ARCH_IA32)
+    // Need to preserve CODE_REG to be able to store the PC marker
+    // and load the pool pointer.
+    blocked_mask |= RegMaskBit(CODE_REG);
+#endif
   }
   reg_ = static_cast<Register>(
       resolver_->AllocateScratchRegister(Location::kRegister,