On Tue, Oct 04, 2016 at 10:50:45AM +0200, Mason wrote > On 04/10/2016 00:40, waltdnes wrote: > > > On Mon, Oct 03, 2016 at 11:06:13AM +0200, Mason wrote > > > >> It does look like 'atom' and 'bonnell' are similar. > >> > >> I don't have 4.9 handy, try this: > >> > >> echo | gcc -xc -S -fverbose-asm -march=atom -o v1.s - > >> echo | gcc -xc -S -fverbose-asm -march=bonnell -o v2.s - > >> diff -u v1.s v2.s > >> > >> Maybe they are identical? > > > > Thanks for the idea. I had to do it a bit differently to get it to > > work. I took a simple "Hello World" program, and ran... > > For my personal education, can you tell me in what way the commands > above failed to work? (You did copy the trailing dash, right?) Sorry, I goofed up somewhere, probably the trailing dash. I tried again, and this time it worked. I got the following... [i660][waltdnes][~] echo | gcc -xc -S -fverbose-asm -march=atom -o v1.s - [i660][waltdnes][~] echo | gcc -xc -S -fverbose-asm -march=bonnell -o v2.s - [i660][waltdnes][~] diff -u v1.s v2.s --- v1.s 2016-10-04 10:08:05.484318802 -0400 +++ v2.s 2016-10-04 10:08:23.980319927 -0400 @@ -2,7 +2,7 @@ # GNU C (Gentoo 4.9.3 p1.5, pie-0.6.4) version 4.9.3 # (x86_64-pc-linux-gnu) # compiled by GNU C version 4.9.3, GMP version 6.0.0, MPFR version 3.1.3-p4, MPC version 1.0.2 # GGC heuristics: --param ggc-min-expand=100 --param # ggc-min-heapsize=131072 -# options passed: - -march=atom -auxbase-strip v1.s -fverbose-asm +# options passed: - -march=bonnell -auxbase-strip v2.s -fverbose-asm # -fstack-protector-strong # options enabled: -faggressive-loop-optimizations # -fasynchronous-unwind-tables -fauto-inc-dec -fcommon -- Walter Dnes <waltdnes@xxxxxxxxxxxx>
