Add unboxed Mint for X64

runtime/vm/intermediate_language_ia32.cc

Index: runtime/vm/intermediate_language_ia32.cc
diff --git a/runtime/vm/intermediate_language_ia32.cc b/runtime/vm/intermediate_language_ia32.cc
index 03f8a723c50c2055c90b35932f6fcaf223b3604e..ee72153ec26bec7dd1b8dd70ba26d067f887db7b 100644
--- a/runtime/vm/intermediate_language_ia32.cc
+++ b/runtime/vm/intermediate_language_ia32.cc
@@ -5903,13 +5903,6 @@ void ShiftMintOpInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
     ASSERT(locs()->in(1).constant().IsSmi());
     const int32_t shift =
         reinterpret_cast<int32_t>(locs()->in(1).constant().raw()) >> 1;
-    if ((shift < 0) || (shift > kMintShiftCountLimit)) {
-      __ jmp(deopt);
-      return;
-    } else if (shift == 0) {
-      // Nothing to do for zero shift amount.
-      return;
-    }
     switch (op_kind()) {
       case Token::kSHR: {
         if (shift > 31) {
@@ -6138,12 +6131,7 @@ void ShiftUint32OpInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
     const intptr_t shift_value = Smi::Cast(constant).Value();
 
     // Check constant shift value.
-    if (shift_value == 0) {
-      // Nothing to do.
-    } else if (shift_value < 0) {
-      // Invalid shift value.
-      __ jmp(deopt);
-    } else if (shift_value > kShifterLimit) {
+    if (shift_value > kShifterLimit) {

[Vyacheslav Egorov (Google), 2014/10/07 12:03:50]

Ditto.

[Cutch, 2014/10/21 17:42:11]

Done.

       // Result is 0.
       __ xorl(left, left);
     } else {