[tree-ssa][unit-at-a-time] bootstrap

[Andrew Pinski]

I think this is a bad interaction between the inter-modular  
optimization, unit-at-a-time and the tree-ssa
stuff but I do not know what is going on as I cannot even bootstrap any  
more on the tree-ssa branch on powerpc-apple-darwin6.6.

Thanks,
Andrew Pinski


On Thursday, Aug 21, 2003, at 00:07 US/Eastern, JUDD JENNE wrote:

>
> I get the following error during a bootstrap on SSA after the merge.
>
> Please note the BOOT_CFLAGS setting includes -funit-at-a-time.
>
> Over the weekend, I observed comparison failures during bootstrap,  
> however I
> wanted to wait until the merge picked up recent changes to the  
> unit-at-a-time
> machinery before mentioning anything. (This same process passed  
> bootstrap on mainline both tonight and
> during the weekend.)
>
> My impression of the error below is that the listed function is being  
> inlined
> into "main" and the two variables are being lost or confused in the  
> process.
>
> I don't believe I used "-g" when I first ran the bootstrap.  Also, the  
> issue
> may not require c++ & objc, though I do not know.
>
> Here are some relevant pieces:
>
> Machine: Gentoo-Linux Distribution ~v1.4 on athlon-xp
> gcc version 3.2.3 20030422 (Gentoo Linux 1.4 3.2.3-r1, propolice)
> GNU ld version 2.14.90.0.2 20030515
>
> Configure and build lines:
>
> /full/path1/configure --prefix=/full/path2/bin-ssa
> --enable-languages=c,c++,objc --disable-libgcj --enable-checking
>
> make BOOT_CFLAGS='-O2 -g -funit-at-a-time' bootstrap 2>&1 | tee ssa.log
>
> Fragment of function in main:
>
> record_insn_name (insn_code_number, XSTR (desc, 0));
>
> The first few lines of the associated function:
>
> static void
> record_insn_name (int code, const char *name)
> {
>   static const char *last_real_name = "insn";
>   static int last_real_code = 0;
>   char *new;
> ...
>
> Notice last_real_name and last_real_code?
>
> Location of Failure (last portion of ssa.log):
>
> stage1/xgcc -Bstage1/  
> -B/home/judd/gcc-dev/bin-ssa/i686-pc-linux-gnu/bin/   -O2 -g  
> -funit-at-a-time -DIN_GCC   -W -Wall -Wwrite-strings  
> -Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long  
> -Werror -fno-common   -DHAVE_CONFIG_H -DGENERATOR_FILE  -o genextract > \
>  genextract.o rtl.o read-rtl.o bitmap.o ggc-none.o gensupport.o  
> insn-conditions.o print-rtl1.o \
>     errors.o ../libiberty/libiberty.a
> genextract.o(.text+0x824): In function `main':
> /home/judd/gcc-dev/gcc-ssa/gcc/genextract.c:519: undefined reference  
> to `last_real_name.0'
> genextract.o(.text+0x83f):/home/judd/gcc-dev/gcc-ssa/gcc/ 
> genextract.c:520: undefined reference to `last_real_code.1'
> genextract.o(.text+0x84d):/home/judd/gcc-dev/gcc-ssa/gcc/ 
> genextract.c:520: undefined reference to `last_real_name.0'
> genextract.o(.text+0x9b1):/home/judd/gcc-dev/gcc-ssa/gcc/ 
> genextract.c:524: undefined reference to `last_real_name.0'
> genextract.o(.text+0x9bc):/home/judd/gcc-dev/gcc-ssa/gcc/ 
> genextract.c:525: undefined reference to `last_real_code.1'
> collect2: ld returned 1 exit status
> make[2]: *** [genextract] Error 1
> make[2]: Leaving directory `/home/judd/gcc-dev/obj-ssa/gcc'
> make[1]: *** [stage2_build] Error 2
> make[1]: Leaving directory `/home/judd/gcc-dev/obj-ssa/gcc'
> make: *** [bootstrap] Error 2
>
>
> If you would like more information or a formal and complete bug  
> report, please
> let me know.
>
> Keep up the great work.
>
>
> Judd Jenne
>
>