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(expand_expr, case IN_EXPR): Fix numerous small bugs and make some 

cleanups.

From-SVN: r3541
This commit is contained in:
Richard Kenner 1993-02-26 15:11:24 -05:00
parent cabeca2978
commit 17938e5781
1 changed files with 29 additions and 28 deletions
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57
gcc/expr.c
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@ -4483,7 +4483,7 @@ expand_expr (exp, target, tmode, modifier)
enum machine_mode index_mode = TYPE_MODE (TREE_TYPE (index));
if (target == 0)
target = gen_reg_rtx (TYPE_MODE (TREE_TYPE (exp)));
target = gen_reg_rtx (mode);
/* If domain is empty, answer is no. */
if (tree_int_cst_lt (set_high_bound, set_low_bound))
@ -4497,18 +4497,14 @@ expand_expr (exp, target, tmode, modifier)
/* Compare index against bounds, if they are constant. */
if (GET_CODE (index_val) == CONST_INT
&& GET_CODE (lo_r) == CONST_INT)
{
if (INTVAL (index_val) < INTVAL (lo_r))
return const0_rtx;
}
&& GET_CODE (lo_r) == CONST_INT
&& INTVAL (index_val) < INTVAL (lo_r))
return const0_rtx;
if (GET_CODE (index_val) == CONST_INT
&& GET_CODE (hi_r) == CONST_INT)
{
if (INTVAL (hi_r) < INTVAL (index_val))
return const0_rtx;
}
&& GET_CODE (hi_r) == CONST_INT
&& INTVAL (hi_r) < INTVAL (index_val))
return const0_rtx;
/* If we get here, we have to generate the code for both cases
(in range and out of range). */
@ -4519,46 +4515,51 @@ expand_expr (exp, target, tmode, modifier)
if (! (GET_CODE (index_val) == CONST_INT
&& GET_CODE (lo_r) == CONST_INT))
{
emit_cmp_insn (index_val, lo_r, LT, 0, GET_MODE (index_val), 0, 0);
emit_cmp_insn (index_val, lo_r, LT, NULL_RTX,
GET_MODE (index_val), 0, 0);
emit_jump_insn (gen_blt (op1));
}
if (! (GET_CODE (index_val) == CONST_INT
&& GET_CODE (hi_r) == CONST_INT))
{
emit_cmp_insn (index_val, hi_r, GT, 0, GET_MODE (index_val), 0, 0);
emit_cmp_insn (index_val, hi_r, GT, NULL_RTX,
GET_MODE (index_val), 0, 0);
emit_jump_insn (gen_bgt (op1));
}
/* Calculate the element number of bit zero in the first word
of the set. */
if (GET_CODE (lo_r) == CONST_INT)
rlow = gen_rtx (CONST_INT, VOIDmode,
INTVAL (lo_r) & ~ (1 << BITS_PER_UNIT));
rlow = GEN_INT (INTVAL (lo_r)
& ~ ((HOST_WIDE_INT) 1 << BITS_PER_UNIT));
else
rlow = expand_binop (index_mode, and_optab,
lo_r, gen_rtx (CONST_INT, VOIDmode,
~ (1 << BITS_PER_UNIT)),
0, 0, OPTAB_LIB_WIDEN);
rlow = expand_binop (index_mode, and_optab, lo_r,
GEN_INT (~((HOST_WIDE_INT) 1 << BITS_PER_UNIT)),
NULL_RTX, 0, OPTAB_LIB_WIDEN);
diff = expand_binop (index_mode, sub_optab,
index_val, rlow, 0, 0, OPTAB_LIB_WIDEN);
index_val, rlow, NULL_RTX, 0, OPTAB_LIB_WIDEN);
quo = expand_divmod (0, TRUNC_DIV_EXPR, index_mode, diff,
gen_rtx (CONST_INT, VOIDmode, BITS_PER_UNIT),
0, 0);
GEN_INT (BITS_PER_UNIT), NULL_RTX, 0);
rem = expand_divmod (1, TRUNC_MOD_EXPR, index_mode, index_val,
gen_rtx (CONST_INT, VOIDmode, BITS_PER_UNIT),
0, 0);
GEN_INT (BITS_PER_UNIT), NULL_RTX, 0);
addr = memory_address (byte_mode,
expand_binop (index_mode, add_optab,
diff, setaddr));
diff, setaddr, NULL_RTX, 0,
OPTAB_LIB_WIDEN));
/* Extract the bit we want to examine */
bit = expand_shift (RSHIFT_EXPR, byte_mode,
gen_rtx (MEM, byte_mode, addr), rem, 0, 1);
result = expand_binop (SImode, and_optab, bit, const1_rtx, target,
gen_rtx (MEM, byte_mode, addr),
make_tree (TREE_TYPE (index), rem),
NULL_RTX, 1);
result = expand_binop (byte_mode, and_optab, bit, const1_rtx,
GET_MODE (target) == byte_mode ? target : 0,
1, OPTAB_LIB_WIDEN);
emit_move_insn (target, result);
if (result != target)
convert_move (target, result, 1);
/* Output the code to handle the out-of-range case. */
emit_jump (op0);