From: amylaar Date: Tue, 16 Feb 2010 19:04:15 +0000 (+0000) Subject: * tm.texi (TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD_SPEC): X-Git-Tag: upstream/4.9.2~31015 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c010e011d99dc91e7fc68fea934ba58c43a38ebd;p=platform%2Fupstream%2Flinaro-gcc.git * tm.texi (TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD_SPEC): Fix return type. Fix argument type. Explain meaning of return value. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@156814 138bc75d-0d04-0410-961f-82ee72b054a4 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index eaa030f..efb042d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2010-02-16 Joern Rennecke + + * tm.texi (TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD_SPEC): + Fix return type. Fix argument type. Explain meaning of return value. + 2010-02-16 Richard Guenther PR tree-optimization/41043 diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi index 4de6e2d..7d65954 100644 --- a/gcc/doc/tm.texi +++ b/gcc/doc/tm.texi @@ -6667,13 +6667,15 @@ a pattern for a branchy check corresponding to a simple check denoted by @var{insn} should be generated. In this case @var{label} can't be null. @end deftypefn -@deftypefn {Target Hook} int TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD_SPEC (rtx @var{insn}) +@deftypefn {Target Hook} bool TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD_SPEC (const_rtx @var{insn}) This hook is used as a workaround for @samp{TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD} not being called on the first instruction of the ready list. The hook is used to -discard speculative instruction that stand first in the ready list from -being scheduled on the current cycle. For non-speculative instructions, -the hook should always return nonzero. For example, in the ia64 backend +discard speculative instructions that stand first in the ready list from +being scheduled on the current cycle. If the hook returns @code{false}, +@var{insn} will not be chosen to be issued. +For non-speculative instructions, +the hook should always return @code{true}. For example, in the ia64 backend the hook is used to cancel data speculative insns when the ALAT table is nearly full. @end deftypefn