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(expand_divmod, case CEIL_DIV_EXPR): Handle emit_store_flag returning 0.

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From-SVN: r7768
This commit is contained in:
Torbjorn Granlund 1994-07-13 20:55:07 +00:00
parent 24a13950ca
commit 412381d963
1 changed files with 16 additions and 4 deletions
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20
gcc/expmed.c
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@ -3132,16 +3132,28 @@ expand_divmod (rem_flag, code, mode, op0, op1, target, unsignedp)
unsigned HOST_WIDE_INT d = INTVAL (op1); unsigned HOST_WIDE_INT d = INTVAL (op1);
t1 = expand_shift (RSHIFT_EXPR, compute_mode, op0, t1 = expand_shift (RSHIFT_EXPR, compute_mode, op0,
build_int_2 (floor_log2 (d), 0), build_int_2 (floor_log2 (d), 0),
NULL_RTX, 1); tquotient, 1);
t2 = expand_binop (compute_mode, and_optab, op0, t2 = expand_binop (compute_mode, and_optab, op0,
GEN_INT (d - 1), GEN_INT (d - 1),
NULL_RTX, 1, OPTAB_LIB_WIDEN); NULL_RTX, 1, OPTAB_LIB_WIDEN);
t3 = gen_reg_rtx (compute_mode); t3 = gen_reg_rtx (compute_mode);
t3 = emit_store_flag (t3, NE, t2, const0_rtx, t3 = emit_store_flag (t3, NE, t2, const0_rtx,
compute_mode, 1, 1); compute_mode, 1, 1);
quotient = force_operand (gen_rtx (PLUS, compute_mode, if (t3 == 0)
t1, t3), {
tquotient); rtx lab;
lab = gen_label_rtx ();
emit_cmp_insn (t2, const0_rtx, EQ, NULL_RTX,
compute_mode, 0, 0);
emit_jump_insn (gen_beq (lab));
expand_inc (t1, const1_rtx);
emit_label (lab);
quotient = t1;
}
else
quotient = force_operand (gen_rtx (PLUS, compute_mode,
t1, t3),
tquotient);
break; break;
} }