ck_pr: Get rid of ck_pr_fence_X_X functions.

These add unnecessary complexity to the ck_pr_fence interface.
Instead, it can be safely assumed that developers will use
ck_pr_fence_X to enforce X -> X ordering.

include/ck_pr.h

@@ -82,14 +82,11 @@ CK_PR_FENCE_NOOP(load_depends)
  * ordering.
  */
 CK_PR_FENCE_EMIT(atomic)
-CK_PR_FENCE_EMIT(atomic_atomic)
 CK_PR_FENCE_EMIT(atomic_load)
 CK_PR_FENCE_EMIT(atomic_store)
 CK_PR_FENCE_EMIT(store_atomic)
 CK_PR_FENCE_EMIT(load_atomic)
-CK_PR_FENCE_EMIT(load_load)
 CK_PR_FENCE_EMIT(load_store)
-CK_PR_FENCE_EMIT(store_store)
 CK_PR_FENCE_EMIT(store_load)
 CK_PR_FENCE_EMIT(load)
 CK_PR_FENCE_EMIT(store)
@@ -100,14 +97,11 @@ CK_PR_FENCE_EMIT(memory)
  * Otherwise, loads are executed in-order.
  */
 CK_PR_FENCE_EMIT(atomic)
-CK_PR_FENCE_EMIT(atomic_atomic)
 CK_PR_FENCE_NOOP(atomic_load)
 CK_PR_FENCE_EMIT(atomic_store)
 CK_PR_FENCE_EMIT(store_atomic)
 CK_PR_FENCE_NOOP(load_atomic)
-CK_PR_FENCE_NOOP(load_load)
 CK_PR_FENCE_EMIT(load_store)
-CK_PR_FENCE_EMIT(store_store)
 CK_PR_FENCE_EMIT(store_load)
 CK_PR_FENCE_NOOP(load)
 CK_PR_FENCE_EMIT(store)
@@ -118,14 +112,11 @@ CK_PR_FENCE_EMIT(memory)
  * prior stores. Atomic operations are serializing.
  */
 CK_PR_FENCE_NOOP(atomic)
-CK_PR_FENCE_NOOP(atomic_atomic)
 CK_PR_FENCE_NOOP(atomic_load)
 CK_PR_FENCE_NOOP(atomic_store)
 CK_PR_FENCE_NOOP(store_atomic)
 CK_PR_FENCE_NOOP(load_atomic)
-CK_PR_FENCE_NOOP(load_load)
 CK_PR_FENCE_NOOP(load_store)
-CK_PR_FENCE_NOOP(store_store)
 CK_PR_FENCE_EMIT(store_load)
 CK_PR_FENCE_NOOP(load)
 CK_PR_FENCE_NOOP(store)

include/gcc/ppc/ck_pr.h

@@ -68,16 +68,13 @@ ck_pr_stall(void)
 	}
 
 CK_PR_FENCE(atomic, "lwsync")
-CK_PR_FENCE(atomic_atomic, "lwsync")
 CK_PR_FENCE(atomic_store, "lwsync")
 CK_PR_FENCE(atomic_load, "sync")
 CK_PR_FENCE(store_atomic, "lwsync")
 CK_PR_FENCE(load_atomic, "lwsync")
 CK_PR_FENCE(store, "lwsync")
-CK_PR_FENCE(store_store, "lwsync")
 CK_PR_FENCE(store_load, "sync")
 CK_PR_FENCE(load, "lwsync")
-CK_PR_FENCE(load_load, "lwsync")
 CK_PR_FENCE(load_store, "lwsync")
 CK_PR_FENCE(memory, "sync")
 

include/gcc/ppc64/ck_pr.h

@@ -71,16 +71,13 @@ ck_pr_stall(void)
  *     http://www.ibm.com/developerworks/systems/articles/powerpc.html
  */
 CK_PR_FENCE(atomic, "lwsync")
-CK_PR_FENCE(atomic_atomic, "lwsync")
 CK_PR_FENCE(atomic_store, "lwsync")
 CK_PR_FENCE(atomic_load, "sync")
 CK_PR_FENCE(store_atomic, "lwsync")
 CK_PR_FENCE(load_atomic, "lwsync")
 CK_PR_FENCE(store, "lwsync")
-CK_PR_FENCE(store_store, "lwsync")
 CK_PR_FENCE(store_load, "sync")
 CK_PR_FENCE(load, "lwsync")
-CK_PR_FENCE(load_load, "lwsync")
 CK_PR_FENCE(load_store, "lwsync")
 CK_PR_FENCE(memory, "sync")
 

include/gcc/sparcv9/ck_pr.h

@@ -67,17 +67,14 @@ ck_pr_stall(void)
  * Atomic operations are treated as both load and store
  * operations on SPARCv9.
  */
-CK_PR_FENCE(atomic_atomic, "membar #StoreStore")
 CK_PR_FENCE(atomic, "membar #StoreStore")
 CK_PR_FENCE(atomic_store, "membar #StoreStore")
 CK_PR_FENCE(atomic_load, "membar #StoreLoad")
 CK_PR_FENCE(store_atomic, "membar #StoreStore")
 CK_PR_FENCE(load_atomic, "membar #LoadStore")
 CK_PR_FENCE(store, "membar #StoreStore")
-CK_PR_FENCE(store_store, "membar #StoreStore")
 CK_PR_FENCE(store_load, "membar #StoreLoad")
 CK_PR_FENCE(load, "membar #LoadLoad")
-CK_PR_FENCE(load_load, "membar #LoadLoad")
 CK_PR_FENCE(load_store, "membar #LoadStore")
 CK_PR_FENCE(memory, "membar #LoadLoad | #LoadStore | #StoreStore | #StoreLoad")
 

include/gcc/x86/ck_pr.h

@@ -71,16 +71,13 @@ ck_pr_stall(void)
 	}
 
 CK_PR_FENCE(atomic, "sfence")
-CK_PR_FENCE(atomic_atomic, "sfence")
 CK_PR_FENCE(atomic_store, "sfence")
 CK_PR_FENCE(atomic_load, "mfence")
 CK_PR_FENCE(store_atomic, "sfence")
 CK_PR_FENCE(load_atomic, "mfence")
 CK_PR_FENCE(load, "lfence")
-CK_PR_FENCE(load_load, "lfence")
 CK_PR_FENCE(load_store, "mfence")
 CK_PR_FENCE(store, "sfence")
-CK_PR_FENCE(store_store, "sfence")
 CK_PR_FENCE(store_load, "mfence")
 CK_PR_FENCE(memory, "mfence")
 

include/gcc/x86_64/ck_pr.h

@@ -74,10 +74,8 @@ CK_PR_FENCE(atomic_load, "mfence")
 CK_PR_FENCE(store_atomic, "sfence")
 CK_PR_FENCE(load_atomic, "mfence")
 CK_PR_FENCE(load, "lfence")
-CK_PR_FENCE(load_load, "lfence")
 CK_PR_FENCE(load_store, "mfence")
 CK_PR_FENCE(store, "sfence")
-CK_PR_FENCE(store_store, "sfence")
 CK_PR_FENCE(store_load, "mfence")
 CK_PR_FENCE(memory, "mfence")