llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-29 13:32:33 +00:00

History

Chris Lattner 5b3bbc7cd7 allow the offset of a preinc'd load to be the low-part of a global. This

produces this clever code:

_millisecs:
        lis r2, ha16(_Time.1182)
        lwzu r3, lo16(_Time.1182)(r2)
        lwz r2, 4(r2)
        addic r4, r2, 1
        addze r3, r3
        blr

instead of this:

_millisecs:
        lis r2, ha16(_Time.1182)
        la r3, lo16(_Time.1182)(r2)
        lwz r2, lo16(_Time.1182)(r2)
        lwz r3, 4(r3)
        addic r4, r3, 1
        addze r3, r2
        blr

for:

long %millisecs() {
        %tmp = load long* %Time.1182            ; <long> [#uses=1]
        %tmp1 = add long %tmp, 1                ; <long> [#uses=1]
        ret long %tmp1
}


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31673 91177308-0d34-0410-b5e6-96231b3b80d8

2006-11-11 04:53:30 +00:00

Analysis

Remove redundant <cmath>.

2006-11-08 19:16:44 +00:00