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Spill single-def variable at definition to avoid further spilling #54345

Merged
merged 20 commits into from
Jul 10, 2021
Merged

Spill single-def variable at definition to avoid further spilling #54345

merged 20 commits into from
Jul 10, 2021
+177 −81

Commits on Jul 9, 2021

  1. Print single-def

    @kunalspathak
    kunalspathak committed Jul 9, 2021
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  2. Rename lvEhWriteThruCandidate->lvSingleDefRegCandidate, introduce isS… 

    …ingleDef
    @kunalspathak
    kunalspathak committed Jul 9, 2021
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  3. Introduce singleDefSpillAfter 

    If a single-def variable is decided to get spilled in its lifetime, then
spill it at the firstRefPosition RefTypeDef so the value of the variable
is always valid on the stack. Going forward, no more spills will be needed
for such variable or no more resolutions (reg to stack) will be needed for
such single-def variables.
    @kunalspathak
    kunalspathak committed Jul 9, 2021
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  4. jit format

    @kunalspathak
    kunalspathak committed Jul 9, 2021
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  5. some fixes

    @kunalspathak
    kunalspathak committed Jul 9, 2021
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  6. wip

    @kunalspathak
    kunalspathak committed Jul 9, 2021
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  7. Add check of isSingleDef in validateInterval()

    @kunalspathak
    kunalspathak committed Jul 9, 2021
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  8. Make isSingleDef during buildIntervals

    @kunalspathak
    kunalspathak committed Jul 9, 2021
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  9. minor fix in lclvars.cpp

    @kunalspathak
    kunalspathak committed Jul 9, 2021
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  10. some fixes after self CR

    @kunalspathak
    kunalspathak committed Jul 9, 2021
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  11. Updated some comments

    @kunalspathak
    kunalspathak committed Jul 9, 2021
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  12. Remove lvSpillAtSingleDef from some asserts

    @kunalspathak
    kunalspathak committed Jul 9, 2021
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  13. Use singleDefSpill information in getWeight()

    @kunalspathak
    kunalspathak committed Jul 9, 2021
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  14. Remove lvSpillAtSingleDef from some more checks

    @kunalspathak
    kunalspathak committed Jul 9, 2021
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  15. Mark lvSpillAtSingleDef whenever refPosition->singleDefSpill==true

    @kunalspathak
    kunalspathak committed Jul 9, 2021
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  16. Add TODO for SingleDefVarCandidate

    @kunalspathak
    kunalspathak committed Jul 9, 2021
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  17. Some notes on setting singleDefSpill

    @kunalspathak
    kunalspathak committed Jul 9, 2021
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  18. jit format

    @kunalspathak
    kunalspathak committed Jul 9, 2021
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  19. review feedback

    @kunalspathak
    kunalspathak committed Jul 9, 2021
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  20. review comments

    @kunalspathak
    kunalspathak committed Jul 9, 2021
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