llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-02-22 13:29:44 +00:00

History

Bill Wendling 48f7f237ea A problem that's exposed when machine LICM is enabled. Consider this code:

LBB1_3:   # bb
...
        xorl    %ebp, %ebp
        subl    (%ebx), %ebp
...
        incl    %ecx
        cmpl    %edi, %ecx
        jl      LBB1_3  # bb

Whe using machine LICM, LLVM converts it into:

        xorl %esi, %esi
LBB1_3: # bb
...
        movl    %esi, %ebp
        subl    (%ebx), %ebp
...
        incl    %ecx
        cmpl    %edi, %ecx
        jl      LBB1_3  # bb

Two address conversion inserts the copy instruction. However, it's cheaper to
rematerialize it, and remat helps reduce register pressure.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51562 91177308-0d34-0410-b5e6-96231b3b80d8

2008-05-26 05:18:34 +00:00

Analysis

Don't treat values as signed when looking at loop steppings in HowForToNonZero.

2008-05-25 23:43:32 +00:00

Archive

Create archives with the same permissions are ar.

2008-05-24 05:42:29 +00:00

AsmParser

Don't silently truncate array extents to 32 bits.

2008-05-23 21:40:55 +00:00

Bitcode

Make structs and arrays first-class types, and add assembly