Bill Wendling 7749a9014b If we have a load of a global address that's not modified during the ... function, then go ahead and hoist it out of the loop. This is the result: $ cat a.c volatile int G; int A(int N) { for (; N > 0; --N) G++; } $ llc -o - -relocation-model=pic _A: ... LBB1_2: # bb movl L_G$non_lazy_ptr-"L1$pb"(%eax), %esi incl (%esi) incl %edx cmpl %ecx, %edx jne LBB1_2 # bb ... $ llc -o - -relocation-model=pic -machine-licm _A: ... movl L_G$non_lazy_ptr-"L1$pb"(%eax), %eax LBB1_2: # bb incl (%eax) incl %edx cmpl %ecx, %edx jne LBB1_2 # bb ... I'm limiting this to the MOV32rm x86 instruction for now. llvm-svn: 45444		2007-12-30 03:18:58 +00:00
clang	Allow implicit casts during arithmetic for OCUVector operations	2007-12-30 02:59:45 +00:00
llvm	If we have a load of a global address that's not modified during the	2007-12-30 03:18:58 +00:00