Gcc 4.4 Loongson 2F specific integer multiply/divide instruction patch
http://gcc.gnu.org/ml/gcc-patches/2008-11/msg00273.html I have put it in my loongson overlay . BTW, the gcc svn ebuild is from dirtyepic's overlay. Thanks, ;) zhangle@2f ~ $ cat hello.c #include<stdio.h> int mul(){ unsigned long a = 0xffffffff; unsigned long b = 0xf; return a * b; } zhangle@2f ~ $ gcc -march=loongson2f hello.c -S zhangle@2f ~ $ gcc -march=mips3 hello.c -S -o hello-mips3.s zhangle@2f ~ $ diff -u hello.s hello-mips3.s --- hello.s 2008-11-08 18:16:52.000000000 +0800 +++ hello-mips3.s 2008-11-08 18:16:55.000000000 +0800 @@ -25,7 +25,8 @@ sw $2,8($fp) lw $3,12($fp) lw $2,8($fp) - multu.g $2,$3,$2 + mult $3,$2 + mflo $2 move $sp,$fp lw $fp,20($sp) addiu $sp,$sp,24