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2351abaeab
llvm-6502/lib/Transforms
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Chris Lattner 2351abaeab Move from Stage 0 to Stage 1. 
Only emit one PHI node for IV uses with identical bases and strides (after
moving foldable immediates to the load/store instruction).

This implements LoopStrengthReduce/dont_insert_redundant_ops.ll, allowing
us to generate this PPC code for test1:

        or r30, r3, r3
.LBB_test1_1:   ; Loop
        li r2, 0
        stw r2, 0(r30)
        stw r2, 4(r30)
        bl L_pred$stub
        addi r30, r30, 8
        cmplwi cr0, r3, 0
        bne .LBB_test1_1        ; Loop

instead of this code:

        or r30, r3, r3
        or r29, r3, r3
.LBB_test1_1:   ; Loop
        li r2, 0
        stw r2, 0(r29)
        stw r2, 4(r30)
        bl L_pred$stub
        addi r30, r30, 8        ;; Two iv's with step of 8
        addi r29, r29, 8
        cmplwi cr0, r3, 0
        bne .LBB_test1_1        ; Loop


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22635 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 22:51:21 +00:00
..
Hello Remove trailing whitespace 2005-04-21 23:48:37 +00:00
Instrumentation Eliminate tabs and trailing spaces 2005-04-23 21:38:35 +00:00
IPO ConstantInt::get only works for arguments < 128. 2005-08-01 16:52:50 +00:00
Scalar Move from Stage 0 to Stage 1. 2005-08-03 22:51:21 +00:00
Utils The correct fix for PR612, which also fixes 2005-08-03 18:51:44 +00:00
ExprTypeConvert.cpp ConvertibleToGEP always returns 0, remove some old crufty code which 2005-07-26 16:38:28 +00:00
LevelRaise.cpp ConvertibleToGEP always returns 0, remove some old crufty code which 2005-07-26 16:38:28 +00:00
Makefile
TransformInternals.cpp ConvertibleToGEP always returns 0, remove some old crufty code which 2005-07-26 16:38:28 +00:00
TransformInternals.h ConvertibleToGEP always returns 0, remove some old crufty code which 2005-07-26 16:38:28 +00:00