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| author | Uros Bizjak <ubizjak@gmail.com> | 2017-04-14 14:30:57 +0200 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2017-04-26 04:21:59 -0700 |
| commit | 1e1f44de64d12a9539155665cd0aedee7909b00d (patch) | |
| tree | 77c78e26ffa17bdaac989f2f1b6a62e40200a1f9 | |
| parent | 9fe3c80c7c3dbce34dadc7f0693d211fdd9a0b03 (diff) | |
| download | glibc-1e1f44de64d12a9539155665cd0aedee7909b00d.tar.gz glibc-1e1f44de64d12a9539155665cd0aedee7909b00d.tar.xz glibc-1e1f44de64d12a9539155665cd0aedee7909b00d.zip | |
Add earlyclobber to sqrtt/sqrtf insns.
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.
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | sysdeps/alpha/fpu/math_private.h | 8 |
2 files changed, 10 insertions, 4 deletions
diff --git a/ChangeLog b/ChangeLog index 8867578f25..042262eaa1 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2017-04-25 Uros Bizjak <ubizjak@gmail.com> + + * sysdeps/alpha/fpu/math_private.h (__ieee754_sqrt): Add + earlyclobber to output operand of sqrt insn. + (__ieee754_sqrtf): Ditto. + 2017-04-25 Joseph Myers <joseph@codesourcery.com> [BZ #21426] diff --git a/sysdeps/alpha/fpu/math_private.h b/sysdeps/alpha/fpu/math_private.h index 9e06e25dc6..1e97c867c3 100644 --- a/sysdeps/alpha/fpu/math_private.h +++ b/sysdeps/alpha/fpu/math_private.h @@ -27,9 +27,9 @@ __ieee754_sqrt (double d) { double ret; # ifdef _IEEE_FP_INEXACT - asm ("sqrtt/suid %1,%0" : "=f"(ret) : "f"(d)); + asm ("sqrtt/suid %1,%0" : "=&f"(ret) : "f"(d)); # else - asm ("sqrtt/sud %1,%0" : "=f"(ret) : "f"(d)); + asm ("sqrtt/sud %1,%0" : "=&f"(ret) : "f"(d)); # endif return ret; } @@ -39,9 +39,9 @@ __ieee754_sqrtf (float d) { float ret; # ifdef _IEEE_FP_INEXACT - asm ("sqrts/suid %1,%0" : "=f"(ret) : "f"(d)); + asm ("sqrts/suid %1,%0" : "=&f"(ret) : "f"(d)); # else - asm ("sqrts/sud %1,%0" : "=f"(ret) : "f"(d)); + asm ("sqrts/sud %1,%0" : "=&f"(ret) : "f"(d)); # endif return ret; } |