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re PR target/16974 (could not split insn (ice in final_scan_insn, final.c))

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PR target/16974
        * config/alpha/alpha.md (adddi_fp_hack): Don't rely on splitting
        if the constant satisfies add_operand.

From-SVN: r86613
This commit is contained in:
Richard Henderson 2004-08-26 03:03:38 -07:00 • committed by Richard Henderson
parent 8def91dbfa
commit fd9363bf2b
2 changed files with 13 additions and 4 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2004-08-25 Richard Henderson <rth@redhat.com>
PR target/16974
* config/alpha/alpha.md (adddi_fp_hack): Don't rely on splitting
if the constant satisfies add_operand.
2004-08-25 Richard Henderson <rth@redhat.com>
PR debug/10695

11
gcc/config/alpha/alpha.md
View file

@ -444,9 +444,9 @@
;; and if we split before reload, we will require additional instructions.
(define_insn "*adddi_fp_hack"
[(set (match_operand:DI 0 "register_operand" "=r")
(plus:DI (match_operand:DI 1 "reg_no_subreg_operand" "r")
(match_operand:DI 2 "const_int_operand" "n")))]
[(set (match_operand:DI 0 "register_operand" "=r,r,r")
(plus:DI (match_operand:DI 1 "reg_no_subreg_operand" "r,r,r")
(match_operand:DI 2 "const_int_operand" "K,L,n")))]
"NONSTRICT_REG_OK_FP_BASE_P (operands[1])
&& INTVAL (operands[2]) >= 0
/* This is the largest constant an lda+ldah pair can add, minus
@ -460,7 +460,10 @@
+ max_reg_num () * UNITS_PER_WORD
+ current_function_pretend_args_size)
- current_function_pretend_args_size))"
"#")
"@
lda %0,%2(%1)
ldah %0,%h2(%1)
#")
;; Don't do this if we are adjusting SP since we don't want to do it
;; in two steps. Don't split FP sources for the reason listed above.