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alpha.c (alpha_align_insns): Suppress realignment immediately after a call; insert nops before a call. 

* config/alpha/alpha.c (alpha_align_insns): Suppress realignment
        immediately after a call; insert nops before a call.

From-SVN: r47820
This commit is contained in:
Richard Henderson 2001-12-09 13:54:23 -08:00 committed by Richard Henderson
parent 30864e1408
commit 11cb1475c8
2 changed files with 18 additions and 8 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2001-12-09 Richard Henderson <rth@redhat.com>
* config/alpha/alpha.c (alpha_align_insns): Suppress realignment
immediately after a call; insert nops before a call.
2001-12-09 Richard Henderson <rth@redhat.com>
* config/alpha/alpha.c (alpha_align_insns): Use align_functions,

21
gcc/config/alpha/alpha.c
View File

@ -7622,15 +7622,20 @@ alpha_align_insns (insns, max_align, next_group, next_nop)
else if ((int) align < len)
{
unsigned int new_log_align = len > 8 ? 4 : 3;
rtx where;
rtx prev, where;
where = prev_nonnote_insn (i);
where = prev = prev_nonnote_insn (i);
if (!where || GET_CODE (where) != CODE_LABEL)
where = i;
emit_insn_before (gen_realign (GEN_INT (new_log_align)), where);
align = 1 << new_log_align;
ofs = 0;
/* Can't realign between a call and its gp reload. */
if (! (TARGET_EXPLICIT_RELOCS
&& prev && GET_CODE (prev) == CALL_INSN))
{
emit_insn_before (gen_realign (GEN_INT (new_log_align)), where);
align = 1 << new_log_align;
ofs = 0;
}
}
/* If the group won't fit in the same INT16 as the previous,
@ -7644,8 +7649,8 @@ alpha_align_insns (insns, max_align, next_group, next_nop)
int nop_count = (align - ofs) / 4;
rtx where;
/* Insert nops before labels and branches to truely merge the
execution of the nops with the previous instruction group. */
/* Insert nops before labels, branches, and calls to truely merge
the execution of the nops with the previous instruction group. */
where = prev_nonnote_insn (i);
if (where)
{
@ -7655,7 +7660,7 @@ alpha_align_insns (insns, max_align, next_group, next_nop)
if (where2 && GET_CODE (where2) == JUMP_INSN)
where = where2;
}
else if (GET_CODE (where) != JUMP_INSN)
else if (GET_CODE (where) == INSN)
where = i;
}
else