Remove failure tag.

src/globals.h

Index: src/globals.h
diff --git a/src/globals.h b/src/globals.h
index 871164eaefe6059f9ed700beb3dbbdca9d780078..d5ae4a9baa6dab6f179aed08c8de3fd4e62e27a0 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -216,13 +216,6 @@ const int kCodeAlignmentBits = 5;
 const intptr_t kCodeAlignment = 1 << kCodeAlignmentBits;
 const intptr_t kCodeAlignmentMask = kCodeAlignment - 1;
 

[Michael Starzinger, 2014/07/15 11:05:33]

nit: Let's keep two empty newlines.

[Hannes Payer (out of office), 2014/07/15 11:10:53]

Done.

-// Tag information for Failure.
-// TODO(yangguo): remove this from space owner calculation.
-const int kFailureTag = 3;
-const int kFailureTagSize = 2;
-const intptr_t kFailureTagMask = (1 << kFailureTagSize) - 1;
-
-
 // Zap-value: The value used for zapping dead objects.
 // Should be a recognizable hex value tagged as a failure.
 #ifdef V8_HOST_ARCH_64_BIT
@@ -537,9 +530,6 @@ enum StateTag {
 #define HAS_SMI_TAG(value) \
   ((reinterpret_cast<intptr_t>(value) & kSmiTagMask) == kSmiTag)
 
-#define HAS_FAILURE_TAG(value) \
-  ((reinterpret_cast<intptr_t>(value) & kFailureTagMask) == kFailureTag)
-
 // OBJECT_POINTER_ALIGN returns the value aligned as a HeapObject pointer
 #define OBJECT_POINTER_ALIGN(value)                             \
   (((value) + kObjectAlignmentMask) & ~kObjectAlignmentMask)