X87: [crankshaft] Support all oddballs for truncating TaggedToI changes.

  port 7d383be9 (r40608)

  original commit message:
  For inputs to truncating binary operations like <<, | or >>>, support
  all Oddballs not just undefined, true and false. This unifies treatment
  of these truncations in Crankshaft and TurboFan, and is very easy
  nowadays, since the memory layout of Oddball and HeapNumber is
  compatible.

BUG=

Review-Url: https://codereview.chromium.org/2450093007
Cr-Commit-Position: refs/heads/master@{#40632}

src/crankshaft/x87/lithium-codegen-x87.cc

@@ -4672,34 +4672,18 @@ void LCodeGen::DoDeferredTaggedToI(LTaggedToI* instr, Label* done) {
   __ 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 {
     // TODO(olivf) Converting a number on the fpu is actually quite slow. We
     // should first try a fast conversion and then bailout to this slow case.