[Linux-ia64] Compiler warnings.

[Steffen Persvold <sp@scali.com>]

Hi all,

For some time I've been compiling applications and kernels on IA64. 
Sometimes the assembler gives me warnings about "RAW dependencies" which 
makes me wonder about the quality of the gcc compiler. Is this something 
that should be paid attention to ?

Here's a warning (and not the only one) I get when I compile the latest 
2.4.18 patchset with gcc 2.96 (gcc version 2.96 20000731 (Debian GNU/Linux 
IA64 experimental)) :

gcc -D__KERNEL__ -I/usr/src/linux-2.4.18-020622/include 
-Wall -Wstrict-prototypes -Wno-trigraphs -g -O2 -fomit-frame-pointer 
-fno-strict-aliasing -fno-common -pipe  -ffixed-r13 
-mfixed-rangeñ0-f15,f32-f127 -falign-functions2 -mconstant-gp  
-DKBUILD_BASENAME=vmscan  -c -o vmscan.o vmscan.c
{standard input}: Assembler messages:
{standard input}:594: Warning: Use of 'st8' violates RAW dependency 'DTC' (data)
{standard input}:594: Warning: Only the first path encountering the conflict is reported
{standard input}:581: Warning: This is the location of the conflicting usage

I haven't tried the 3.0.1 compiler yet.

Thanks,
 -- 
  Steffen Persvold   | Scalable Linux Systems |   Try out the world's best
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