56 Commits

Author SHA1 Message Date
serge-sans-paille
1cd1c1d62e Revert "[SCEV][IndVarSimplify] insert point should not be block front."
This reverts commit f1efb8bb4ba0584a9b994f3404a2c62920ce6652.

Reverted because it doesn't correctly update the pass return status, see

http://lab.llvm.org:8011/builders/llvm-clang-x86_64-expensive-checks-debian/builds/9441/steps/test-check-all/logs/FAIL%3A%20LLVM%3A%3Awiden-i32-i8ptr.ll
2020-07-14 14:24:26 +02:00
Chen Zheng
f1efb8bb4b [SCEV][IndVarSimplify] insert point should not be block front.
The block front may be a PHI node, inserting a cast instructions like
BitCast, PtrToInt, IntToPtr among PHIs is not right.

Reviewed By: lebedev.ri

Differential Revision:  https://reviews.llvm.org/D80975
2020-07-09 21:56:57 -04:00
Huihui Zhang
bd43f78c76 [LSR][SCEVExpander] Avoid blind cast 'Factor' to SCEVConstant in FactorOutConstant.
Summary:
In SCEVExpander FactorOutConstant(), when GEP indexing into/over scalable vector,
it is legal for the 'Factor' in a MulExpr to be the size of a scalable vector
instead of a compile-time constant.

Current upstream crash with the test attached.

Reviewers: efriedma, sdesmalen, sanjoy.google, mkazantsev

Reviewed By: efriedma

Subscribers: hiraditya, javed.absar, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D80973
2020-06-04 10:33:39 -07:00
Florian Hahn
bcbd26bfe6 [SCEV] Move ScalarEvolutionExpander.cpp to Transforms/Utils (NFC).
SCEVExpander modifies the underlying function so it is more suitable in
Transforms/Utils, rather than Analysis. This allows using other
transform utils in SCEVExpander.

This patch was originally committed as b8a3c34eee06, but broke the
modules build, as LoopAccessAnalysis was using the Expander.

The code-gen part of LAA was moved to lib/Transforms recently, so this
patch can be landed again.

Reviewers: sanjoy.google, efriedma, reames

Reviewed By: sanjoy.google

Differential Revision: https://reviews.llvm.org/D71537
2020-05-20 10:53:40 +01:00
Florian Hahn
b8a3c34eee Revert "[SCEV] Move ScalarEvolutionExpander.cpp to Transforms/Utils (NFC)."
This reverts commit 51ef53f3bd23559203fe9af82ff2facbfedc1db3, as it
breaks some bots.
2020-01-04 18:44:38 +00:00
Florian Hahn
51ef53f3bd [SCEV] Move ScalarEvolutionExpander.cpp to Transforms/Utils (NFC).
SCEVExpander modifies the underlying function so it is more suitable in
Transforms/Utils, rather than Analysis. This allows using other
transform utils in SCEVExpander.

Reviewers: sanjoy.google, efriedma, reames

Reviewed By: sanjoy.google

Differential Revision: https://reviews.llvm.org/D71537
2020-01-04 18:29:35 +00:00