[Bug rtl-optimization/50339] suboptimal register allocation for abs(__int128_t)
glisse at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Fri Nov 2 14:34:00 GMT 2012
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50339
--- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> 2012-11-02 14:33:27 UTC ---
It looks even worse in 4.8:
movq %rdi, %r9
movq %rsi, %rdi
movq %rsi, %r10
sarq $63, %rdi
movq %rdi, %rcx
xorq %r9, %rcx
movq %rcx, %rax
movq %r10, %rcx
xorq %rdi, %rcx
subq %rdi, %rax
movq %rcx, %rdx
sbbq %rdi, %rdx
ret
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