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re PR target/24949 (FAIL: gcc.c-torture/compile/20000403-2.c -O0)

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PR target/24949
	* config/m68k/m68k.md (ashrdi_const32, ashrdi_const32_mem,
	ashrdi_const, ashrdi3): Use a scratch register.

From-SVN: r113675
This commit is contained in:
Kazu Hirata 2006-05-10 17:35:24 +00:00 committed by Kazu Hirata
parent fdafd4613f
commit e43d8b8a0e
2 changed files with 34 additions and 28 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2006-05-10 Kazu Hirata <kazu@codesourcery.com>
PR target/24949
* config/m68k/m68k.md (ashrdi_const32, ashrdi_const32_mem,
ashrdi_const, ashrdi3): Use a scratch register.
2006-05-10 Richard Guenther <rguenther@suse.de>
PR tree-optimization/27302

56
gcc/config/m68k/m68k.md
View File

@ -4283,42 +4283,40 @@
})
(define_insn "ashrdi_const32"
[(set (match_operand:DI 0 "register_operand" "=d")
(ashiftrt:DI (match_operand:DI 1 "general_operand" "ro")
(const_int 32)))]
""
{
CC_STATUS_INIT;
operands[2] = gen_rtx_REG (SImode, REGNO (operands[0]) + 1);
if (TARGET_68020)
return "move%.l %1,%2\;smi %0\;extb%.l %0";
else
return "move%.l %1,%2\;smi %0\;ext%.w %0\;ext%.l %0";
})
(define_insn "ashrdi_const32_mem"
[(set (match_operand:DI 0 "nonimmediate_operand" "=o,<")
(ashiftrt:DI (match_operand:DI 1 "general_operand" "ro,ro")
[(set (match_operand:DI 0 "nonimmediate_operand" "=d,o,<")
(ashiftrt:DI (match_operand:DI 1 "general_operand" "ro,ro,ro")
(const_int 32)))
(clobber (match_scratch:SI 2 "=d,d"))]
(clobber (match_scratch:SI 2 "=X,d,d"))]
""
{
CC_STATUS_INIT;
if (which_alternative == 1)
operands[3] = operands[0];
if (which_alternative == 0)
{
operands[2] = gen_rtx_REG (SImode, REGNO (operands[0]) + 1);
if (TARGET_68020)
return "move%.l %1,%2\;smi %0\;extb%.l %0";
else
return "move%.l %1,%2\;smi %0\;ext%.w %0\;ext%.l %0";
}
else
operands[3] = adjust_address (operands[0], SImode, 4);
if (TARGET_68020)
return "move%.l %1,%3\;smi %2\;extb%.l %2\;move%.l %2,%0";
else
return "move%.l %1,%3\;smi %2\;ext%.w %2\;ext%.l %2\;move%.l %2,%0";
{
if (which_alternative == 2)
operands[3] = operands[0];
else if (which_alternative == 1)
operands[3] = adjust_address (operands[0], SImode, 4);
if (TARGET_68020)
return "move%.l %1,%3\;smi %2\;extb%.l %2\;move%.l %2,%0";
else
return "move%.l %1,%3\;smi %2\;ext%.w %2\;ext%.l %2\;move%.l %2,%0";
}
})
;; The predicate below must be general_operand, because ashrdi3 allows that
(define_insn "ashrdi_const"
[(set (match_operand:DI 0 "nonimmediate_operand" "=d")
(ashiftrt:DI (match_operand:DI 1 "general_operand" "0")
(match_operand 2 "const_int_operand" "n")))]
(match_operand 2 "const_int_operand" "n")))
(clobber (match_scratch:SI 3 "=X"))]
"(!TARGET_COLDFIRE
&& ((INTVAL (operands[2]) >= 1 && INTVAL (operands[2]) <= 3)
|| INTVAL (operands[2]) == 8 || INTVAL (operands[2]) == 16
@ -4355,9 +4353,10 @@
})
(define_expand "ashrdi3"
[(set (match_operand:DI 0 "nonimmediate_operand" "")
(ashiftrt:DI (match_operand:DI 1 "general_operand" "")
(match_operand 2 "const_int_operand" "")))]
[(parallel [(set (match_operand:DI 0 "nonimmediate_operand" "")
(ashiftrt:DI (match_operand:DI 1 "general_operand" "")
(match_operand 2 "const_int_operand" "")))
(clobber (match_scratch:SI 3 ""))])]
"!TARGET_COLDFIRE"
"
{
@ -4368,6 +4367,7 @@
&& INTVAL (operands[2]) != 8 && INTVAL (operands[2]) != 16
&& (INTVAL (operands[2]) < 31 || INTVAL (operands[2]) > 63)))
FAIL;
operands[3] = gen_rtx_SCRATCH (SImode);
} ")
;; On all 68k models, this makes faster code in a special case.