Re: Bug in optimization?

[Alexander Stante <mrpac at gmx dot de>]

Diego Novillo wrote:
> Works fine with current CVS mainline.  In fact, it's optimized to
> printf(20).
>
> I'm not sure if we're accepting bugs for the 3.3.x series.  If we are,
> open a bugzilla case.

I just downloaded gcc-core-3.4.1.tar.bz2 and compiled it here on my box 
and I got the same result as described before.

compiled with:
$ build/gcc/bin/gcc -v -O1 test.c
Reading specs from 
/tmp/build/gcc/bin/../lib/gcc/i686-pc-linux-gnu/3.4.1/specs
Configured with: /tmp/gcc-3.4.1/configure --prefix=/tmp/build/gcc/
Thread model: posix
gcc version 3.4.1
 /tmp/build/gcc/bin/../libexec/gcc/i686-pc-linux-gnu/3.4.1/cc1 -quiet 
-v -iprefix /tmp/build/gcc/bin/../lib/gcc/i686-pc-linux-gnu/3.4.1/ 
test.c -quiet -dumpbase test.c -mtune=pentiumpro -auxbase test -O1 
-version -o /tmp/ccfoRaFc.s
ignoring nonexistent directory 
"/tmp/build/gcc/bin/../lib/gcc/i686-pc-linux-gnu/3.4.1/../../../../i686-pc-linux-gnu/include"
ignoring duplicate directory 
"/tmp/build/gcc//lib/gcc/i686-pc-linux-gnu/3.4.1/include"
ignoring nonexistent directory 
"/tmp/build/gcc//lib/gcc/i686-pc-linux-gnu/3.4.1/../../../../i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /tmp/build/gcc/bin/../lib/gcc/i686-pc-linux-gnu/3.4.1/include
 /usr/local/include
 /tmp/build/gcc//include
 /usr/include
End of search list.
GNU C version 3.4.1 (i686-pc-linux-gnu)
        compiled by GNU C version 3.3.3 (Debian 20040401).
GGC heuristics: --param ggc-min-expand=64 --param ggc-min-heapsize=64535
 as -V -Qy -o /tmp/cc0Tqq7i.o /tmp/ccfoRaFc.s
GNU assembler version 2.14.90.0.7 (i386-linux) using BFD version 
2.14.90.0.7 20031029 Debian GNU/Linux
 /tmp/build/gcc/bin/../libexec/gcc/i686-pc-linux-gnu/3.4.1/collect2 
--eh-frame-hdr -m elf_i386 -dynamic-linker /lib/ld-linux.so.2 
/usr/lib/crt1.o /usr/lib/crti.o 
/tmp/build/gcc/bin/../lib/gcc/i686-pc-linux-gnu/3.4.1/crtbegin.o 
-L/tmp/build/gcc/bin/../lib/gcc/i686-pc-linux-gnu/3.4.1 
-L/tmp/build/gcc/bin/../lib/gcc 
-L/tmp/build/gcc//lib/gcc/i686-pc-linux-gnu/3.4.1 
-L/tmp/build/gcc/bin/../lib/gcc/i686-pc-linux-gnu/3.4.1/../../.. 
-L/tmp/build/gcc//lib/gcc/i686-pc-linux-gnu/3.4.1/../../.. 
/tmp/cc0Tqq7i.o -lgcc -lgcc_eh -lc -lgcc -lgcc_eh 
/tmp/build/gcc/bin/../lib/gcc/i686-pc-linux-gnu/3.4.1/crtend.o 
/usr/lib/crtn.o

Alex