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authorDavid Mosberger-Tang <davidm@hpl.hp.com>2005-04-28 00:13:33 -0400
committerTony Luck <tony.luck@intel.com>2005-04-28 00:13:33 -0400
commit9ec1a7ad434fa951ff845dbee3397cf6ad4f76df (patch)
tree05e8a156ccd42bfbed3293b386f0e4d905d04a88 /arch/ia64/kernel/entry.S
parent06ef66081620e94fe35a518f98624b83a140096e (diff)
[IA64] Use dynamic prediction for RSE-clearing branches.
This by itself is good for a 1-2 cycle speed up. Effect is bigger when combined with the later patches. Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/kernel/entry.S')
-rw-r--r--arch/ia64/kernel/entry.S4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S
index 5b469db23268..c0f28339d58b 100644
--- a/arch/ia64/kernel/entry.S
+++ b/arch/ia64/kernel/entry.S
@@ -1012,14 +1012,14 @@ rse_clear_invalid:
1012 mov loc5=0 1012 mov loc5=0
1013 mov loc6=0 1013 mov loc6=0
1014 mov loc7=0 1014 mov loc7=0
1015(pRecurse) br.call.sptk.few b0=rse_clear_invalid 1015(pRecurse) br.call.dptk.few b0=rse_clear_invalid
1016 ;; 1016 ;;
1017 mov loc8=0 1017 mov loc8=0
1018 mov loc9=0 1018 mov loc9=0
1019 cmp.ne pReturn,p0=r0,in1 // if recursion count != 0, we need to do a br.ret 1019 cmp.ne pReturn,p0=r0,in1 // if recursion count != 0, we need to do a br.ret
1020 mov loc10=0 1020 mov loc10=0
1021 mov loc11=0 1021 mov loc11=0
1022(pReturn) br.ret.sptk.many b0 1022(pReturn) br.ret.dptk.many b0
1023#endif /* !CONFIG_ITANIUM */ 1023#endif /* !CONFIG_ITANIUM */
1024# undef pRecurse 1024# undef pRecurse
1025# undef pReturn 1025# undef pReturn