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* config/tc-ia64.c (match): Don't inline.

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(extra_goodness): New.
        (md_begin): Prefer nop.f and nop.b for best_template.
This commit is contained in:
Richard Henderson 2000-09-02 01:02:41 +00:00
parent f1abbe987b
commit 44576e1fc1
2 changed files with 38 additions and 9 deletions
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6
gas/ChangeLog
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@ -1,3 +1,9 @@
2000-09-01 Richard Henderson <rth@cygnus.com>
* config/tc-ia64.c (match): Don't inline.
(extra_goodness): New.
(md_begin): Prefer nop.f and nop.b for best_template.
2000-08-31 Kazu Hirata <kazu@hxi.com>
* as.c: Fix formatting.

41
gas/config/tc-ia64.c
View File

@ -5664,7 +5664,9 @@ IA-64 options:\n\
stream);
}
static inline int
/* Return true if TYPE fits in TEMPL at SLOT. */
static int
match (int templ, int type, int slot)
{
enum ia64_unit unit;
@ -5687,6 +5689,19 @@ match (int templ, int type, int slot)
return result;
}
/* Add a bit of extra goodness if a nop of type F or B would fit
in TEMPL at SLOT. */
static inline int
extra_goodness (int templ, int slot)
{
if (match (templ, IA64_TYPE_F, slot))
return 2;
if (match (templ, IA64_TYPE_B, slot))
return 1;
return 0;
}
/* This function is called once, at assembler startup time. It sets
up all the tables, etc. that the MD part of the assembler will need
that can be determined before arguments are parsed. */
@ -5739,7 +5754,11 @@ md_begin ()
symbol_new (".<ltoff.fptr>", undefined_section, FUNC_LT_FPTR_RELATIVE,
&zero_address_frag);
/* compute the table of best templates: */
/* Compute the table of best templates. We compute goodness as a
base 4 value, in which each match counts for 3, each F counts
for 2, each B counts for 1. This should maximize the number of
F and B nops in the chosen bundles, which is good because these
pipelines are least likely to be overcommitted. */
for (i = 0; i < IA64_NUM_TYPES; ++i)
for (j = 0; j < IA64_NUM_TYPES; ++j)
for (k = 0; k < IA64_NUM_TYPES; ++k)
@ -5753,24 +5772,28 @@ md_begin ()
if (match (t, j, 1))
{
if (match (t, k, 2))
goodness = 3;
goodness = 3 + 3 + 3;
else
goodness = 2;
goodness = 3 + 3 + extra_goodness (t, 2);
}
else if (match (t, j, 2))
goodness = 2;
goodness = 3 + 3 + extra_goodness (t, 1);
else
goodness = 1;
{
goodness = 3;
goodness += extra_goodness (t, 1);
goodness += extra_goodness (t, 2);
}
}
else if (match (t, i, 1))
{
if (match (t, j, 2))
goodness = 2;
goodness = 3 + 3;
else
goodness = 1;
goodness = 3 + extra_goodness (t, 2);
}
else if (match (t, i, 2))
goodness = 1;
goodness = 3 + extra_goodness (t, 1);
if (goodness > best)
{