------- Comment #1 from vda dot linux at googlemail dot com 2007-07-21 23:36
-------
With 4.2.1 gcc regressed a bit:
gcc -Os -fomit-frame-pointer -S u.c
.file "u.c"
.text
.globl f
.type f, @function
f:
subl $12, %esp
cmpl $15, 20(%esp)
jl .L2
jle .L2
call g
.L2:
addl $12, %esp
jmp g
.size f, .-f
.ident "GCC: (GNU) 4.2.1"
.section .note.GNU-stack,"",@progbits
In addition to unnecessary jl, we have unnecessary stack manipulations.
(I created separate bug 32849 for this stack problem)
--
vda dot linux at googlemail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|4.1.1 |4.2.1
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29978
