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# cee313d2 17-Apr-2019 Eric Christopher <[email protected]>

Revert "Temporarily Revert "Add basic loop fusion pass.""

The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552
Revision tags: llvmorg-8.0.0, llvmorg-8.0.0-rc5, llvmorg-8.0.0-rc4, llvmorg-8.0.0-rc3, llvmorg-7.1.0, llvmorg-7.1.0-rc1, llvmorg-8.0.0-rc2, llvmorg-8.0.0-rc1, llvmorg-7.0.1, llvmorg-7.0.1-rc3, llvmorg-7.0.1-rc2, llvmorg-7.0.1-rc1, llvmorg-7.0.0, llvmorg-7.0.0-rc3, llvmorg-7.0.0-rc2, llvmorg-7.0.0-rc1, llvmorg-6.0.1, llvmorg-6.0.1-rc3, llvmorg-6.0.1-rc2, llvmorg-6.0.1-rc1, llvmorg-5.0.2, llvmorg-5.0.2-rc2, llvmorg-5.0.2-rc1
# 252165b2 13-Mar-2018 Brian M. Rzycki <[email protected]>

[LazyValueInfo] PR33357 prevent infinite recursion on BinaryOperator

Summary:
It is possible for LVI to encounter instructions that are not in valid
SSA form and reference themselves. One example is

[LazyValueInfo] PR33357 prevent infinite recursion on BinaryOperator

Summary:
It is possible for LVI to encounter instructions that are not in valid
SSA form and reference themselves. One example is the following:
%tmp4 = and i1 %tmp4, undef
Before this patch LVI would recurse until running out of stack memory
and crashed. This patch marks these self-referential instructions as
Overdefined and aborts analysis on the instruction.

Fixes https://bugs.llvm.org/show_bug.cgi?id=33357

Reviewers: craig.topper, anna, efriedma, dberlin, sebpop, kuhar

Reviewed by: dberlin

Subscribers: uabelho, spatel, a.elovikov, fhahn, eli.friedman, mzolotukhin, spop, evandro, davide, llvm-commits

Differential Revision: https://reviews.llvm.org/D34135

llvm-svn: 327432

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