AIX:Proposal to use kSemaphoreAlignmentMask instead kPointerAlignmentMask

src/base/platform/semaphore.h

Index: src/base/platform/semaphore.h
diff --git a/src/base/platform/semaphore.h b/src/base/platform/semaphore.h
index 18700d1ba005f01a77a2fb43f7c6b3219200f382..b01910dfe32ebdb37e03ae6a64e3772b0ee64c14 100644
--- a/src/base/platform/semaphore.h
+++ b/src/base/platform/semaphore.h
@@ -19,6 +19,13 @@
 namespace v8 {
 namespace base {
 
+#if V8_OS_AIX
+// On aix sem_t is of type int
+const uintptr_t kSemaphoreAlignmentMask = sizeof(int) - 1;

[jochen (gone - plz use gerrit), 2016/05/02 16:15:45]

Any reason this is defined in the header?

+#else
+const uintptr_t kSemaphoreAlignmentMask = sizeof(void*) - 1;
+#endif
+
 // Forward declarations.
 class TimeDelta;