Implements unboxed Mints on ARM.

runtime/vm/intermediate_language_ia32.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_IA32.
 #if defined(TARGET_ARCH_IA32)
 
 #include "vm/intermediate_language.h"
 
 #include "vm/dart_entry.h"
@@ skipping 347 matching lines @@
   }
   return true_condition;
 }
 
 
 static void EmitJavascriptIntOverflowCheck(FlowGraphCompiler* compiler,
                                            Label* overflow,
                                            XmmRegister result,
                                            Register tmp) {
   // Compare upper half.
-  Label check_lower, done;
+  Label check_lower;
   __ pextrd(tmp, result, Immediate(1));
   __ cmpl(tmp, Immediate(0x00200000));
   __ j(GREATER, overflow);
   __ j(NOT_EQUAL, &check_lower);
 
   __ pextrd(tmp, result, Immediate(0));
   __ cmpl(tmp, Immediate(0));
   __ j(ABOVE, overflow);
 
   __ Bind(&check_lower);
   __ pextrd(tmp, result, Immediate(1));
   __ cmpl(tmp, Immediate(-0x00200000));
   __ j(LESS, overflow);
   // Anything in the lower part would make the number bigger than the lower
   // bound, so we are done.
-
-  __ Bind(&done);
 }
 
 
 static Condition TokenKindToMintCondition(Token::Kind kind) {
   switch (kind) {
     case Token::kEQ: return EQUAL;
     case Token::kNE: return NOT_EQUAL;
     case Token::kLT: return LESS;
     case Token::kGT: return GREATER;
     case Token::kLTE: return LESS_EQUAL;
@@ skipping 4774 matching lines @@
   const intptr_t kNumInputs = 1;
   const intptr_t value_cid = value()->Type()->ToCid();
   const bool needs_temp = ((value_cid != kSmiCid) && (value_cid != kMintCid));
   const bool needs_writable_input = (value_cid == kSmiCid);
   const intptr_t kNumTemps = needs_temp ? 1 : 0;
   LocationSummary* summary =
       new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
   summary->set_in(0, needs_writable_input
                      ? Location::WritableRegister()
                      : Location::RequiresRegister());
-  if (needs_temp) summary->set_temp(0, Location::RequiresRegister());
+  if (needs_temp) {
+    summary->set_temp(0, Location::RequiresRegister());
+  }
   summary->set_out(0, Location::RequiresFpuRegister());
   return summary;
 }
 
 
 void UnboxIntegerInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   const intptr_t value_cid = value()->Type()->ToCid();
   const Register value = locs()->in(0).reg();
   const XmmRegister result = locs()->out(0).fpu_reg();
 
@@ skipping 216 matching lines @@
   summary->set_out(0, Location::SameAsFirstInput());
   return summary;
 }
 
 
 void ShiftMintOpInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   XmmRegister left = locs()->in(0).fpu_reg();
   ASSERT(locs()->in(1).reg() == ECX);
   ASSERT(locs()->out(0).fpu_reg() == left);
 
-  Label* deopt  = compiler->AddDeoptStub(deopt_id(),
-                                         kDeoptShiftMintOp);
+  Label* deopt = compiler->AddDeoptStub(deopt_id(),
+                                        kDeoptShiftMintOp);
   Label done;
   __ testl(ECX, ECX);
   __ j(ZERO, &done);  // Shift by 0 is a nop.
   __ subl(ESP, Immediate(2 * kWordSize));
   __ movq(Address(ESP, 0), left);
   // Deoptimize if shift count is > 31.
   // sarl operation masks the count to 5 bits and
   // shrd is undefined with count > operand size (32)
   // TODO(fschneider): Support shift counts > 31 without deoptimization.
   __ SmiUntag(ECX);
@@ skipping 374 matching lines @@
                          PcDescriptors::kOther,
                          locs());
   __ Drop(ArgumentCount());  // Discard arguments.
 }
 
 }  // namespace dart
 
 #undef __
 
 #endif  // defined TARGET_ARCH_IA32