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(ashldi3): Update pattern for (sign_extend (ashift ..)) to match the

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current canonicalization.

From-SVN: r7743
This commit is contained in:
Richard Kenner 1994-07-12 12:19:40 -04:00
parent ee59bdfc51
commit db19fab5ec
1 changed files with 9 additions and 16 deletions
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25
gcc/config/alpha/alpha.md
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@ -785,26 +785,19 @@
}"
[(set_attr "type" "iaddlog,shiftcm")])
;; This is the same as (sign_extend (shift X [123])).
(define_insn ""
[(set (match_operand:DI 0 "register_operand" "=r")
(ashiftrt:DI (ashift:DI (match_operand:DI 1 "reg_or_0_operand" "rJ")
(match_operand:DI 2 "const_int_operand" "i"))
(const_int 32)))]
"INTVAL (operands[2]) >= 33 && INTVAL (operands[2]) <= 35"
(sign_extend:DI
(subreg:SI (ashift:DI (match_operand:DI 1 "reg_or_0_operand" "rJ")
(match_operand:DI 2 "const_int_operand" "P"))
0)))]
"INTVAL (operands[2]) >= 1 && INTVAL (operands[2]) <= 3"
"*
{
switch (INTVAL (operands[2]))
{
case 33:
return \"addl %r1,%r1,%0\";
case 34:
return \"s4addl %r1,0,%0\";
case 35:
return \"s8addl %r1,0,%0\";
default:
abort ();
}
if (operands[2] == const1_rtx)
return \"addl %r1,%r1,%0\";
else
return \"s%P2addl %r1,0,%0\";
}"
[(set_attr "type" "iaddlog")])