https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68125
vincenzo Innocente <vincenzo.innocente at cern dot ch> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from vincenzo Innocente <vincenzo.innocente at cern dot ch> ---
confirmed fixed in
gcc version 6.0.0 20151028 (experimental) [trunk revision 229474] (GCC)
still generated code is NOT identical
__Z6rsqrt1fff:
LFB230:
mulss %xmm1, %xmm2
rsqrtss %xmm2, %xmm3
mulss %xmm3, %xmm2
movaps %xmm2, %xmm1
mulss %xmm3, %xmm1
addss LC0(%rip), %xmm1
mulss LC1(%rip), %xmm3
mulss %xmm3, %xmm1
mulss %xmm1, %xmm0
ret
LFE230:
.align 4,0x90
.globl __Z6rsqrt2fff
__Z6rsqrt2fff:
LFB228:
mulss %xmm2, %xmm1
rsqrtss %xmm1, %xmm2
mulss %xmm2, %xmm1
mulss %xmm2, %xmm1
addss LC0(%rip), %xmm1
mulss LC1(%rip), %xmm2
mulss %xmm2, %xmm1
mulss %xmm1, %xmm0
ret
LF
