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authorUros Bizjak <ubizjak@gmail.com>2017-04-14 14:30:57 +0200
committerRichard Henderson <rth@twiddle.net>2017-04-26 04:21:59 -0700
commit1e1f44de64d12a9539155665cd0aedee7909b00d (patch)
tree77c78e26ffa17bdaac989f2f1b6a62e40200a1f9
parent9fe3c80c7c3dbce34dadc7f0693d211fdd9a0b03 (diff)
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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--ChangeLog6
-rw-r--r--sysdeps/alpha/fpu/math_private.h8
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;
}