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re PR rtl-optimization/33410 (ICE in iv_analyze_expr, at loop-iv.c:934)

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PR rtl-opt/33410
        * config/alpha/alpha.c (alpha_emit_xfloating_compare): Use an
        EXPR_LIST for the REG_EQUAL instead of a comparison with a
        funny mode.

From-SVN: r132171
This commit is contained in:
Richard Henderson 2008-02-07 09:45:24 -08:00 committed by Richard Henderson
parent c4ae80d945
commit 32891ff6a1
2 changed files with 15 additions and 5 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2008-07-07 Richard Henderson <rth@redhat.com>
PR rtl-opt/33410
* config/alpha/alpha.c (alpha_emit_xfloating_compare): Use an
EXPR_LIST for the REG_EQUAL instead of a comparison with a
funny mode.
2008-02-07 Uros Bizjak <ubizjak@gmail.com>
PR tree-optimization/35085

13
gcc/config/alpha/alpha.c
View File

@ -3047,7 +3047,7 @@ static rtx
alpha_emit_xfloating_compare (enum rtx_code *pcode, rtx op0, rtx op1)
{
enum rtx_code cmp_code, res_code;
rtx func, out, operands[2];
rtx func, out, operands[2], note;
/* X_floating library comparison functions return
-1 unordered
@ -3087,10 +3087,13 @@ alpha_emit_xfloating_compare (enum rtx_code *pcode, rtx op0, rtx op1)
operands[1] = op1;
out = gen_reg_rtx (DImode);
/* ??? Strange mode for equiv because what's actually returned
is -1,0,1, not a proper boolean value. */
alpha_emit_xfloating_libcall (func, out, operands, 2,
gen_rtx_fmt_ee (cmp_code, CCmode, op0, op1));
/* What's actually returned is -1,0,1, not a proper boolean value,
so use an EXPR_LIST as with a generic libcall instead of a
comparison type expression. */
note = gen_rtx_EXPR_LIST (VOIDmode, op1, NULL_RTX);
note = gen_rtx_EXPR_LIST (VOIDmode, op0, note);
note = gen_rtx_EXPR_LIST (VOIDmode, func, note);
alpha_emit_xfloating_libcall (func, out, operands, 2, note);
return out;
}