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1e1f44de64
When using software completions, we have to prevent assembler to match
input and output operands of sqrtt/sqrtf insn. Add earlyclobber to
output operand to avoid unwanted operand matching.
2017-04-14 Uros Bizjak <ubizjak@gmail.com>
* sysdeps/alpha/fpu/math_private.h (__ieee754_sqrt): Add
earlyclobber to output operand of sqrt insn.
(__ieee754_sqrtf): Ditto.
51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
#ifndef ALPHA_MATH_PRIVATE_H
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#define ALPHA_MATH_PRIVATE_H 1
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/* In bits/mathinline.h we define __isnan et al.
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In sysdeps/alpha/fpu/s_isnan.c we move the identifier out of the way
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via macro hackery. In both cases, tell math/math_private.h that
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we have a local copy of the function. */
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#ifndef __isnan
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# define __isnan __isnan
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#endif
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#ifndef __isnanf
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# define __isnanf __isnanf
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#endif
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/* Generic code forces values to memory; we don't need to do that. */
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#define math_opt_barrier(x) \
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({ __typeof (x) __x = (x); __asm ("" : "+frm" (__x)); __x; })
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#define math_force_eval(x) \
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({ __typeof (x) __x = (x); __asm __volatile__ ("" : : "frm" (__x)); })
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#include_next <math_private.h>
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#ifdef __alpha_fix__
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extern __always_inline double
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__ieee754_sqrt (double d)
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{
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double ret;
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# ifdef _IEEE_FP_INEXACT
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asm ("sqrtt/suid %1,%0" : "=&f"(ret) : "f"(d));
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# else
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asm ("sqrtt/sud %1,%0" : "=&f"(ret) : "f"(d));
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# endif
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return ret;
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}
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extern __always_inline float
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__ieee754_sqrtf (float d)
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{
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float ret;
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# ifdef _IEEE_FP_INEXACT
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asm ("sqrts/suid %1,%0" : "=&f"(ret) : "f"(d));
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# else
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asm ("sqrts/sud %1,%0" : "=&f"(ret) : "f"(d));
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# endif
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return ret;
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}
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#endif /* FIX */
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#endif /* ALPHA_MATH_PRIVATE_H */
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