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d094bd696b
ports collection! :-) PR: 17578 Submitted by: Anton N. Breusov <antonz@library.ntu-kpi.kiev.ua> No objections from: asami, obrien
50 lines
1.6 KiB
Plaintext
50 lines
1.6 KiB
Plaintext
*** optabs.c.orig Sat Feb 14 13:41:17 1998
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--- optabs.c Thu Mar 23 15:38:53 2000
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***************
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*** 1379,1384 ****
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--- 1379,1422 ----
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ok = 1;
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}
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+ #ifdef GPC
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+ /* Optimization if real part of divisor is zero. */
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+ else if (real1 == 0)
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+ {
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+ /* (a+ib) / (0+id) == -i(a+ib) / d == (b/d + i(-a/d) */
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+
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+ /* Fetch imag1 from memory only once. */
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+ imag1 = force_reg (submode, imag1);
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+
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+ if (class == MODE_COMPLEX_FLOAT)
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+ res = expand_binop (submode, binoptab, imag0, imag1,
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+ realr, unsignedp, methods);
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+ else
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+ res = expand_divmod (0, TRUNC_DIV_EXPR, submode,
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+ imag0, imag1, realr, unsignedp);
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+ if (res == 0)
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+ break;
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+ else if (res != realr)
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+ emit_move_insn (realr, res);
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+
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+ if (class == MODE_COMPLEX_FLOAT)
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+ res = expand_binop (submode, binoptab, real0,
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+ imag1, imagr, unsignedp, methods);
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+ else
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+ res = expand_divmod (0, TRUNC_DIV_EXPR, submode,
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+ real0, imag1, imagr, unsignedp);
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+
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+ /* Negate the imaginary part. */
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+ res = expand_unop (submode, neg_optab,
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+ res, imagr, unsignedp);
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+ if (res == 0)
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+ break;
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+ else if (res != imagr)
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+ emit_move_insn (imagr, res);
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+
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+ ok = 1;
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+ }
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+ #endif /* GPC */
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else
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{
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/* Divisor is of complex type:
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