llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-02-06 23:32:27 +00:00

History

Chris Lattner a1deca3cd6 fold (mul (add x, c1), c2) -> (add (mul x, c2), c1*c2)

fold (shl (add x, c1), c2) -> (add (shl x, c2), c1<<c2)

This allows us to compile CodeGen/PowerPC/addi-reassoc.ll into:

_test1:
        slwi r2, r4, 4
        add r2, r2, r3
        lwz r3, 36(r2)
        blr
_test2:
        mulli r2, r4, 5
        add r2, r2, r3
        lbz r2, 11(r2)
        extsb r3, r2
        blr

instead of:

_test1:
        addi r2, r4, 2
        slwi r2, r2, 4
        add r2, r3, r2
        lwz r3, 4(r2)
        blr
_test2:
        addi r2, r4, 2
        mulli r2, r2, 5
        add r2, r3, r2
        lbz r2, 1(r2)
        extsb r3, r2
        blr


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26535 91177308-0d34-0410-b5e6-96231b3b80d8

2006-03-04 23:33:26 +00:00

DAGCombiner.cpp

fold (mul (add x, c1), c2) -> (add (mul x, c2), c1*c2)

2006-03-04 23:33:26 +00:00

LegalizeDAG.cpp

Add more vector NodeTypes: VSDIV, VUDIV, VAND, VOR, and VXOR.

2006-03-03 07:01:07 +00:00

Makefile

…

ScheduleDAG.cpp

Added an offset field to ConstantPoolSDNode.

2006-02-25 09:54:52 +00:00