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Revert "[SCEV] Use nw flag and symbolic iteration count to sharpen ranges of…
7d3b475810ba
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Authored by nikic on Oct 16 2020, 12:44 AM.

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Description

Revert "[SCEV] Use nw flag and symbolic iteration count to sharpen ranges of AddRecs"

This reverts commit 905101c36025fe1c8ecdf9a20cd59db036676073.

This causes a large compile-time regression:
https://llvm-compile-time-tracker.com/compare.php?from=cc175c2cc8e638462bab74e0781e06f9b6eb5017&to=905101c36025fe1c8ecdf9a20cd59db036676073&stat=instructions

Details

Committed

Oct 16 2020, 12:47 AM

Parents

rGe5e4653255ff: Remove dead variable to silence compiler warning [NFC]

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Reverts

D89381: [SCEV] Re-enable "Use nw flag and symbolic iteration count to sharpen ranges of AddRecs", attempt 3
rG905101c36025: [SCEV] Use nw flag and symbolic iteration count to sharpen ranges of AddRecs

Event Timeline

nikic committed rG7d3b475810ba: Revert "[SCEV] Use nw flag and symbolic iteration count to sharpen ranges of… (authored by nikic).Oct 16 2020, 12:47 AM

nikic added reverted changes: rG905101c36025: [SCEV] Use nw flag and symbolic iteration count to sharpen ranges of AddRecs, D89381: [SCEV] Re-enable "Use nw flag and symbolic iteration count to sharpen ranges of AddRecs", attempt 3.

Changes (5)

Path

Size

llvm/

include/

llvm/

Analysis/

ScalarEvolution.h

lib/

Analysis/

ScalarEvolution.cpp

test/

Analysis/

ScalarEvolution/

no-wrap-symbolic-becount.ll

Transforms/

IndVarSimplify/

X86/

eliminate-trunc.ll

promote-iv-to-eliminate-casts.ll

rG7d3b475810ba

llvm/include/llvm/Analysis/ScalarEvolution.h

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llvm/lib/Analysis/ScalarEvolution.cpp

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llvm/test/Analysis/ScalarEvolution/no-wrap-symbolic-becount.ll

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llvm/test/Transforms/IndVarSimplify/X86/eliminate-trunc.ll

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llvm/test/Transforms/IndVarSimplify/promote-iv-to-eliminate-casts.ll

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