[AD] Allegro does not compile with -fprefetch-loop-arrays

[Brandy Westcott <brandy@xxxxxxxxxx>]

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Compiling Allegro-4.0.3 with -fprefetch-loop-arrays in the CFLAGS will cause 
it to die with the following error:

gcc -DHAVE_CONFIG_H -Iinclude -Iinclude/allegro -I./include 
- -I./include/allegro
- -I.  -I/usr/X11R6/include  -DALLEGRO_LIB_BUILD -mcpu=pentium -O2 
- -funroll-loops
- -ffast-math -fomit-frame-pointer -Wall -Wno-unused -march=pentium4 -O3 -pipe
- -mfpmath=sse,387 -mmmx -msse -msse2 -fforce-addr -fomit-frame-pointer
- -funroll-loops -frerun-loop-opt -frerun-cse-after-loop -falign-functions=4
- -fprefetch-loop-arrays -fexpensive-optimizations -fPIC -DALLEGRO_SHARED
- -march=pentium4 -O3 -pipe -mfpmath=sse,387 -mmmx -msse -msse2 -fforce-addr
- -fomit-frame-pointer -funroll-loops -frerun-loop-opt -frerun-cse-after-loop
- -falign-functions=4 -fprefetch-loop-arrays -fexpensive-optimizations -c
./src/allegro.c -o obj/unix/shared/alleg/allegro.o
src/allegro.c: In function `install_allegro':
src/allegro.c:366: internal error: Gleitkomma-Ausnahme

(Gleitkomma-Ausnahme means floating-point exception :)
Allegro compiles wonderfully without -fprefetch-loop-arrays.

- -- 
Brandy Westcott
brandy@xxxxxxxxxx

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