[crankshaft] Support all oddballs for truncating TaggedToI changes.

src/crankshaft/ia32/lithium-codegen-ia32.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_IA32
 
 #include "src/crankshaft/ia32/lithium-codegen-ia32.h"
 
 #include "src/base/bits.h"
 #include "src/code-factory.h"
@@ skipping 4290 matching lines @@
 
 
 void LCodeGen::DoDeferredTaggedToI(LTaggedToI* instr, Label* done) {
   Register input_reg = ToRegister(instr->value());
 
   // The input was optimistically untagged; revert it.
   STATIC_ASSERT(kSmiTagSize == 1);
   __ lea(input_reg, Operand(input_reg, times_2, kHeapObjectTag));
 
   if (instr->truncating()) {
-    Label no_heap_number, check_bools, check_false;
-
-    // Heap number map check.
+    Label truncate;
+    Label::Distance truncate_distance =
+        DeoptEveryNTimes() ? Label::kFar : Label::kNear;
     __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset),
            factory()->heap_number_map());
-    __ j(not_equal, &no_heap_number, Label::kNear);
+    __ j(equal, &truncate, truncate_distance);
+    __ push(input_reg);
+    __ CmpObjectType(input_reg, ODDBALL_TYPE, input_reg);
+    __ pop(input_reg);
+    DeoptimizeIf(not_equal, instr, DeoptimizeReason::kNotANumberOrOddball);
+    __ bind(&truncate);
     __ TruncateHeapNumberToI(input_reg, input_reg);
-    __ jmp(done);
-
-    __ bind(&no_heap_number);
-    // Check for Oddballs. Undefined/False is converted to zero and True to one
-    // for truncating conversions.
-    __ cmp(input_reg, factory()->undefined_value());
-    __ j(not_equal, &check_bools, Label::kNear);
-    __ Move(input_reg, Immediate(0));
-    __ jmp(done);
-
-    __ bind(&check_bools);
-    __ cmp(input_reg, factory()->true_value());
-    __ j(not_equal, &check_false, Label::kNear);
-    __ Move(input_reg, Immediate(1));
-    __ jmp(done);
-
-    __ bind(&check_false);
-    __ cmp(input_reg, factory()->false_value());
-    DeoptimizeIf(not_equal, instr,
-                 DeoptimizeReason::kNotAHeapNumberUndefinedBoolean);
-    __ Move(input_reg, Immediate(0));
   } else {
     XMMRegister scratch = ToDoubleRegister(instr->temp());
     DCHECK(!scratch.is(xmm0));
     __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset),
            isolate()->factory()->heap_number_map());
     DeoptimizeIf(not_equal, instr, DeoptimizeReason::kNotAHeapNumber);
     __ movsd(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset));
     __ cvttsd2si(input_reg, Operand(xmm0));
     __ Cvtsi2sd(scratch, Operand(input_reg));
     __ ucomisd(xmm0, scratch);
@@ skipping 817 matching lines @@
   __ bind(deferred->exit());
   __ bind(&done);
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_IA32