llvm-6502/lib/Transforms
Evan Cheng 2bd122c4d9 Loosen up iv reuse to allow reuse of the same stride but a larger type when truncating from the larger type to smaller type is free.
e.g.
Turns this loop:
LBB1_1: # entry.bb_crit_edge
        xorl    %ecx, %ecx
        xorw    %dx, %dx
        movw    %dx, %si
LBB1_2: # bb
        movl    L_X$non_lazy_ptr, %edi
        movw    %si, (%edi)
        movl    L_Y$non_lazy_ptr, %edi
        movw    %dx, (%edi)
		addw    $4, %dx
		incw    %si
		incl    %ecx
		cmpl    %eax, %ecx
		jne     LBB1_2  # bb
	
into

LBB1_1: # entry.bb_crit_edge
        xorl    %ecx, %ecx
        xorw    %dx, %dx
LBB1_2: # bb
        movl    L_X$non_lazy_ptr, %esi
        movw    %cx, (%esi)
        movl    L_Y$non_lazy_ptr, %esi
        movw    %dx, (%esi)
        addw    $4, %dx
		incl    %ecx
        cmpl    %eax, %ecx
        jne     LBB1_2  # bb


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43375 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-26 01:56:11 +00:00
..
Hello Fix typo in comment. 2007-05-06 13:37:16 +00:00
Instrumentation New CallInst interface to address GLIBCXX_DEBUG errors caused by 2007-08-01 03:43:44 +00:00
IPO Fix off by 1 bug in printf->puts lowering. 2007-10-24 20:14:50 +00:00
Scalar Loosen up iv reuse to allow reuse of the same stride but a larger type when truncating from the larger type to smaller type is free. 2007-10-26 01:56:11 +00:00
Utils Reg2Mem cleanup and optimizations: 2007-10-21 23:05:16 +00:00
Makefile Build Hello by default so it can be used in test cases. 2007-04-11 21:03:37 +00:00