https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65136
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |uros at gcc dot gnu.org
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
After the patch the assembly difference between 4.9 and 5 is
--- t.s.good 2015-02-20 13:26:52.337186388 +0100
+++ t.s 2015-02-20 13:26:56.769235529 +0100
@@ -21,7 +21,7 @@
testl %eax, %eax
jne .L3
xorl %eax, %eax
- cmpw $-1, %di
+ cmpl $65535, %edi
sete %al
ret
.cfi_endproc
not sure why we prefer the bigger encoding now.
