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mips.md (div_trap_normal): Don't ask for the REGNO of (const_int 0)...

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* config/mips/mips.md (div_trap_normal): Don't ask for the REGNO
of (const_int 0), when what we really care about is
whether it's a zero constant anyway.
(div_trap_mips16): Likewise.

From-SVN: r30648
This commit is contained in:
Geoff Keating 1999-11-24 06:25:14 +00:00 committed by Geoffrey Keating
parent 428248f794
commit 8f8b5612dc
2 changed files with 16 additions and 9 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
1999-11-24 Geoffrey Keating <geoffk@cygnus.com>
* config/mips/mips.md (div_trap_normal): Don't ask for the REGNO
of (const_int 0), when what we really care about is
whether it's a zero constant anyway.
(div_trap_mips16): Likewise.
1999-11-23 Mark Mitchell <mark@codesourcery.com>
* loop.c (loop_optimize): Always find_loop_tree_blocks and

18
gcc/config/mips/mips.md
View File

@ -2395,8 +2395,8 @@
}")
(define_insn "div_trap_normal"
[(trap_if (eq (match_operand 0 "register_operand" "d")
(match_operand 1 "true_reg_or_0_operand" "dJ"))
[(trap_if (eq (match_operand 0 "register_operand" "d,d")
(match_operand 1 "true_reg_or_0_operand" "d,J"))
(match_operand 2 "immediate_operand" ""))]
"!TARGET_MIPS16"
"*
@ -2411,20 +2411,20 @@
if ((int) REG_DEP_ANTI == (int) REG_NOTE_KIND (link)
&& GET_CODE (XEXP (link, 0)) == INSN
&& GET_CODE (PATTERN (XEXP (link, 0))) == TRAP_IF
&& REGNO (operands[1]) == 0)
&& which_alternative == 1)
have_dep_anti = 1;
if (! have_dep_anti)
{
if (GENERATE_BRANCHLIKELY)
{
if (GET_CODE (operands[1]) == CONST_INT)
if (which_alternative == 1)
return \"%(beql\\t%0,$0,1f\\n\\tbreak\\t%2\\n%~1:%)\";
else
return \"%(beql\\t%0,%1,1f\\n\\tbreak\\t%2\\n%~1:%)\";
}
else
{
if (GET_CODE (operands[1]) == CONST_INT)
if (which_alternative == 1)
return \"%(bne\\t%0,$0,1f\\n\\tnop\\n\\tbreak\\t%2\\n%~1:%)\";
else
return \"%(bne\\t%0,%1,1f\\n\\tnop\\n\\tbreak\\t%2\\n%~1:%)\";
@ -2439,8 +2439,8 @@
;; The mips16 bne insns is a macro which uses reg 24 as an intermediate.
(define_insn "div_trap_mips16"
[(trap_if (eq (match_operand 0 "register_operand" "d")
(match_operand 1 "true_reg_or_0_operand" "dJ"))
[(trap_if (eq (match_operand 0 "register_operand" "d,d")
(match_operand 1 "true_reg_or_0_operand" "d,J"))
(match_operand 2 "immediate_operand" ""))
(clobber (reg:SI 24))]
"TARGET_MIPS16"
@ -2456,12 +2456,12 @@
if ((int) REG_DEP_ANTI == (int) REG_NOTE_KIND (link)
&& GET_CODE (XEXP (link, 0)) == INSN
&& GET_CODE (PATTERN (XEXP (link, 0))) == TRAP_IF
&& REGNO (operands[1]) == 0)
&& which_alternative == 1)
have_dep_anti = 1;
if (! have_dep_anti)
{
/* No branch delay slots on mips16. */
if (GET_CODE (operands[1]) == CONST_INT)
if (which_alternative == 1)
return \"%(bnez\\t%0,1f\\n\\tbreak\\t%2\\n%~1:%)\";
else
return \"%(bne\\t%0,%1,1f\\n\\tbreak\\t%2\\n%~1:%)\";