OpenE2K/gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

(expand_binop): Use expand_divmod to do integer division for DIV of

Browse Source 
MODE_COMPLEX_INT operands.

From-SVN: r6670
This commit is contained in:
Richard Kenner 1994-02-28 06:21:06 -05:00
parent 2f39784493
commit 2140ed5bfe
1 changed files with 38 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

57
gcc/optabs.c
View File

@ -1238,13 +1238,23 @@ expand_binop (mode, binoptab, op0, op1, target, unsignedp, methods)
real1 = force_reg (submode, real1);
/* Simply divide the real and imaginary parts by `c' */
res = expand_binop (submode, binoptab, real0, real1,
realr, unsignedp, methods);
if (class == MODE_COMPLEX_FLOAT)
res = expand_binop (submode, binoptab, real0, real1,
realr, unsignedp, methods);
else
res = expand_divmod (0, TRUNC_DIV_EXPR, submode,
real0, real1, realr, unsignedp);
if (res != realr)
emit_move_insn (realr, res);
res = expand_binop (submode, binoptab, imag0, real1,
imagr, unsignedp, methods);
if (class == MODE_COMPLEX_FLOAT)
res = expand_binop (submode, binoptab, imag0, real1,
imagr, unsignedp, methods);
else
res = expand_divmod (0, TRUNC_DIV_EXPR, submode,
imag0, real1, imagr, unsignedp);
if (res != imagr)
emit_move_insn (imagr, res);
}
@ -1254,9 +1264,8 @@ expand_binop (mode, binoptab, op0, op1, target, unsignedp, methods)
rtx divisor;
rtx real_t;
rtx imag_t;
rtx lhs, rhs;
optab mulopt = unsignedp ? umul_widen_optab : smul_optab;
/* Don't fetch these from memory more than once. */
real0 = force_reg (submode, real0);
real1 = force_reg (submode, real1);
@ -1266,10 +1275,10 @@ expand_binop (mode, binoptab, op0, op1, target, unsignedp, methods)
/* Divisor: c*c + d*d */
divisor = expand_binop (submode, add_optab,
expand_binop (submode, mulopt,
expand_binop (submode, smul_optab,
real1, real1,
0, unsignedp, methods),
expand_binop (submode, mulopt,
expand_binop (submode, smul_optab,
imag1, imag1,
0, unsignedp, methods),
0, unsignedp, methods);
@ -1277,45 +1286,55 @@ expand_binop (mode, binoptab, op0, op1, target, unsignedp, methods)
if (! imag0) /* ((a)(c-id))/divisor */
{ /* (a+i0) / (c+id) = (ac/(cc+dd)) + i(-ad/(cc+dd)) */
/* Calculate the dividend */
real_t = expand_binop (submode, mulopt, real0, real1,
real_t = expand_binop (submode, smul_optab, real0, real1,
0, unsignedp, methods);
imag_t
= expand_unop (submode, neg_optab,
expand_binop (submode, mulopt, real0, imag1,
0, unsignedp, methods),
expand_binop (submode, smul_optab, real0,
imag1, 0, unsignedp, methods),
0, unsignedp);
}
else /* ((a+ib)(c-id))/divider */
{
/* Calculate the dividend */
real_t = expand_binop (submode, add_optab,
expand_binop (submode, mulopt,
expand_binop (submode, smul_optab,
real0, real1,
0, unsignedp, methods),
expand_binop (submode, mulopt,
expand_binop (submode, smul_optab,
imag0, imag1,
0, unsignedp, methods),
0, unsignedp, methods);
imag_t = expand_binop (submode, sub_optab,
expand_binop (submode, mulopt,
expand_binop (submode, smul_optab,
imag0, real1,
0, unsignedp, methods),
expand_binop (submode, mulopt,
expand_binop (submode, smul_optab,
real0, imag1,
0, unsignedp, methods),
0, unsignedp, methods);
}
res = expand_binop (submode, binoptab, real_t, divisor,
realr, unsignedp, methods);
if (class == MODE_COMPLEX_FLOAT)
res = expand_binop (submode, binoptab, real_t, divisor,
realr, unsignedp, methods);
else
res = expand_divmod (0, TRUNC_DIV_EXPR, submode,
real_t, divisor, realr, unsignedp);
if (res != realr)
emit_move_insn (realr, res);
res = expand_binop (submode, binoptab, imag_t, divisor,
imagr, unsignedp, methods);
if (class == MODE_COMPLEX_FLOAT)
res = expand_binop (submode, binoptab, imag_t, divisor,
imagr, unsignedp, methods);
else
res = expand_divmod (0, TRUNC_DIV_EXPR, submode,
imag_t, divisor, imagr, unsignedp);
if (res != imagr)
emit_move_insn (imagr, res);
}