Add more sparcv8plus comments.

diff --git a/src/backend/port/tas/solaris_sparc.s b/src/backend/port/tas/solaris_sparc.s
index 891e248736bd2cdfd070b08f59983e3d5713dc38..2f273cce583b505d9abbf16044e85380b8e5bb86 100644 (file)
--- a/src/backend/port/tas/solaris_sparc.s
+++ b/src/backend/port/tas/solaris_sparc.s
@@ -22,13 +22,13 @@ pg_atomic_cas:
        ! by a sparcv8 CPU.  gcc continues to use "ldstub" because
        ! there is no indication which sparc version it is targeting.
        !
-       ! There actually is a trick for embedding "cas" for a compiler
-       ! that is targeting sparcv8:
+       ! It is actually possible to use "cas" for sparcv8 binaries if 
+       ! -xarch=v8plus is used for compilation.  There is actually a
+       ! trick for embedding "cas" in a sparcv8-targeted compiler, but
+       ! it can only be run on a sparcv8plus cpus:
        !
        !   http://cvs.opensolaris.org/source/xref/on/usr/src/lib/libc/sparc/threads/sparc.il
        !
-       ! It is actually possible to use "cas" for sparcv8 binaries if 
-       ! -xarch=v8plus is used for compilation.
 
 #ifdef __sparcv9
        cas     [%o0],%o2,%o1