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Commit 9ec1a7ad authored by David Mosberger-Tang's avatar David Mosberger-Tang Committed by Tony Luck
Browse files

[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: default avatarDavid Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
parent 06ef6608

arch/ia64/kernel/entry.S

+2 −2
Original line number Diff line number Diff line
@@ -1012,14 +1012,14 @@ rse_clear_invalid: 
	mov loc5=0

	mov loc6=0

	mov loc7=0

(pRecurse) br.call.sptk.few b0=rse_clear_invalid

(pRecurse) br.call.dptk.few b0=rse_clear_invalid

	;;

	mov loc8=0

	mov loc9=0

	cmp.ne pReturn,p0=r0,in1	// if recursion count != 0, we need to do a br.ret

	mov loc10=0

	mov loc11=0

(pReturn) br.ret.sptk.many b0

(pReturn) br.ret.dptk.many b0

#endif /* !CONFIG_ITANIUM */

#	undef pRecurse

#	undef pReturn