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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
# 15930bf3 09-Nov-2018 Eli Friedman <[email protected]>

[JumpThreading] Fix exponential time algorithm computing known values.

ComputeValueKnownInPredecessors has a "visited" set to prevent infinite
loops, since a value can be visited more than once. Ho

[JumpThreading] Fix exponential time algorithm computing known values.

ComputeValueKnownInPredecessors has a "visited" set to prevent infinite
loops, since a value can be visited more than once. However, the
implementation didn't prevent the algorithm from taking exponential
time. Instead of removing elements from the RecursionSet one at a time,
we should keep around the whole set until
ComputeValueKnownInPredecessors finishes, then discard it.

The testcase is synthetic because I was having trouble effectively
reducing the original. But it's basically the same idea.

Instead of failing, we could theoretically cache the result instead.
But I don't think it would help substantially in practice.

Differential Revision: https://reviews.llvm.org/D54239

llvm-svn: 346562

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Revision tags: 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, llvmorg-6.0.0, llvmorg-6.0.0-rc3, llvmorg-6.0.0-rc2, llvmorg-6.0.0-rc1, llvmorg-5.0.1, llvmorg-5.0.1-rc3, llvmorg-5.0.1-rc2, llvmorg-5.0.1-rc1, llvmorg-5.0.0, llvmorg-5.0.0-rc5, llvmorg-5.0.0-rc4, llvmorg-5.0.0-rc3, llvmorg-5.0.0-rc2, llvmorg-5.0.0-rc1, llvmorg-4.0.1, llvmorg-4.0.1-rc3, llvmorg-4.0.1-rc2, llvmorg-4.0.1-rc1, llvmorg-4.0.0, llvmorg-4.0.0-rc4, llvmorg-4.0.0-rc3, llvmorg-4.0.0-rc2, llvmorg-4.0.0-rc1, llvmorg-3.9.1, llvmorg-3.9.1-rc3, llvmorg-3.9.1-rc2, llvmorg-3.9.1-rc1, llvmorg-3.9.0, llvmorg-3.9.0-rc3, llvmorg-3.9.0-rc2, llvmorg-3.9.0-rc1, llvmorg-3.8.1, llvmorg-3.8.1-rc1, llvmorg-3.8.0, llvmorg-3.8.0-rc3, llvmorg-3.8.0-rc2, llvmorg-3.8.0-rc1, llvmorg-3.7.1, llvmorg-3.7.1-rc2, llvmorg-3.7.1-rc1, llvmorg-3.7.0, llvmorg-3.7.0-rc4, llvmorg-3.7.0-rc3, llvmorg-3.7.0-rc2, llvmorg-3.7.0-rc1, llvmorg-3.6.2, llvmorg-3.6.2-rc1, llvmorg-3.6.1, llvmorg-3.6.1-rc1, llvmorg-3.5.2, llvmorg-3.5.2-rc1
# a79ac14f 27-Feb-2015 David Blaikie <[email protected]>

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

Essentially the same as the GEP change in r230786.

A similar migration script can be used to update test

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

Essentially the same as the GEP change in r230786.

A similar migration script can be used to update test cases, though a few more
test case improvements/changes were required this time around: (r229269-r229278)

import fileinput
import sys
import re

pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)")

for line in sys.stdin:
sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line))

Reviewers: rafael, dexonsmith, grosser

Differential Revision: http://reviews.llvm.org/D7649

llvm-svn: 230794

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Revision tags: llvmorg-3.6.0, llvmorg-3.6.0-rc4, llvmorg-3.6.0-rc3, llvmorg-3.6.0-rc2, llvmorg-3.6.0-rc1, llvmorg-3.5.1, llvmorg-3.5.1-rc2, llvmorg-3.5.1-rc1, llvmorg-3.5.0, llvmorg-3.5.0-rc4, llvmorg-3.5.0-rc3, llvmorg-3.5.0-rc2, llvmorg-3.5.0-rc1, llvmorg-3.4.2, llvmorg-3.4.2-rc1, llvmorg-3.4.1, llvmorg-3.4.1-rc2, llvmorg-3.4.1-rc1, llvmorg-3.4.0, llvmorg-3.4.0-rc3, llvmorg-3.4.0-rc2, llvmorg-3.4.0-rc1, llvmorg-3.3.1-rc1, llvmorg-3.3.0, llvmorg-3.3.0-rc3, llvmorg-3.3.0-rc2, llvmorg-3.3.0-rc1, llvmorg-3.2.0, llvmorg-3.2.0-rc3, llvmorg-3.2.0-rc2, llvmorg-3.2.0-rc1
# d5639ff8 01-Nov-2012 Chandler Carruth <[email protected]>

Add a test case for PR14233.

llvm-svn: 167224


Revision tags: llvmorg-3.1.0, llvmorg-3.1.0-rc3, llvmorg-3.1.0-rc2, llvmorg-3.1.0-rc1
# 6a144a22 27-Nov-2011 Chris Lattner <[email protected]>

Upgrade syntax of tests using volatile instructions to use 'load volatile' instead of 'volatile load', which is archaic.

llvm-svn: 145171


Revision tags: llvmorg-3.0.0, llvmorg-3.0.0-rc4, llvmorg-3.0.0-rc3, llvmorg-3.0.0-rc2, llvmorg-3.0.0-rc1
# 59345c8b 17-Jun-2011 Chris Lattner <[email protected]>

remove asmparser support for the old getresult instruction, which has been subsumed by extractvalue.

llvm-svn: 133247


Revision tags: llvmorg-2.9.0, llvmorg-2.9.0-rc3, llvmorg-2.9.0-rc2, llvmorg-2.9.0-rc1, llvmorg-2.8.0, llvmorg-2.8.0-rc3
# 99c985c3 29-Sep-2010 Owen Anderson <[email protected]>

Fix PR8247: JumpThreading can cause a block to become unreachable while still having predecessor, if it is part of a self-loop.
Because of this, we cannot use the Simplify* APIs, as they can assert-f

Fix PR8247: JumpThreading can cause a block to become unreachable while still having predecessor, if it is part of a self-loop.
Because of this, we cannot use the Simplify* APIs, as they can assert-fail on unreachable code. Since it's not easy to determine
if a given threading will cause a block to become unreachable, simply defer simplifying simplification to later InstCombine and/or
DCE passes.

llvm-svn: 115082

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Revision tags: llvmorg-2.8.0-rc2, llvmorg-2.8.0-rc1, llvmorg-2.8.0-rc0
# a5e6b3ec 31-Aug-2010 Owen Anderson <[email protected]>

Merge 2010-08-31-InfiniteRecursion.ll into crash.ll.

llvm-svn: 112635


# 3c603024 18-Aug-2010 Chris Lattner <[email protected]>

Fix PR7755: knowing something about an inval for a pred
from the LHS should disable reconsidering that pred on the
RHS. However, knowing something about the pred on the RHS
shouldn't disable subsequ

Fix PR7755: knowing something about an inval for a pred
from the LHS should disable reconsidering that pred on the
RHS. However, knowing something about the pred on the RHS
shouldn't disable subsequent additions on the RHS from
happening.

llvm-svn: 111349

show more ...


# bb4c4b59 26-Jul-2010 Owen Anderson <[email protected]>

Fix a test with malformed IR. Not sure why this didn't fail before.

llvm-svn: 109422


# 19eff2a9 15-Jul-2010 Chris Lattner <[email protected]>

Fix PR7647, handling the case when 'To' ends up being
mutated by recursive simplification. This also enhances
ReplaceAndSimplifyAllUses to actually do a real RAUW
at the end of it, which updates an

Fix PR7647, handling the case when 'To' ends up being
mutated by recursive simplification. This also enhances
ReplaceAndSimplifyAllUses to actually do a real RAUW
at the end of it, which updates any value handles
pointing to "From" to start pointing to "To". This
seems useful for debug info and random other VH users.

llvm-svn: 108415

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# bbc25ff5 12-Jul-2010 Chris Lattner <[email protected]>

if jump threading is able to infer interesting values on both
the LHS and RHS of an and/or instruction, don't multiply add
known predecessor values. This fixes the crash on testcase
from PR7498

llv

if jump threading is able to infer interesting values on both
the LHS and RHS of an and/or instruction, don't multiply add
known predecessor values. This fixes the crash on testcase
from PR7498

llvm-svn: 108114

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# 329ea064 14-Jun-2010 Chris Lattner <[email protected]>

jump threading can't split a critical edge from an indirectbr. This
fixes PR7356.

llvm-svn: 105950


Revision tags: llvmorg-2.7.0
# 9ae28b14 10-Apr-2010 Chris Lattner <[email protected]>

fix PR6743, a case where we'd delete an instruction before using it
in some cases.

llvm-svn: 100937


# 6fbfe589 15-Feb-2010 Chris Lattner <[email protected]>

fix PR6305 by handling BlockAddress in a helper function
called by jump threading.

llvm-svn: 96263


# 29b15c5c 23-Jan-2010 Chris Lattner <[email protected]>

third bug from PR6119: the xor dupe extension allows
for arbitrary terminators in predecessors, don't assume
it is a conditional or uncond branch. The testcase shows
an example where they can happen

third bug from PR6119: the xor dupe extension allows
for arbitrary terminators in predecessors, don't assume
it is a conditional or uncond branch. The testcase shows
an example where they can happen with switches.

llvm-svn: 94323

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# ba2d0b89 23-Jan-2010 Chris Lattner <[email protected]>

add an early out to ProcessBranchOnXOR to speed it up,
handle the case when we can infer an input to the xor
from all inputs that agree, instead of going into an
infinite loop. Another part of PR619

add an early out to ProcessBranchOnXOR to speed it up,
handle the case when we can infer an input to the xor
from all inputs that agree, instead of going into an
infinite loop. Another part of PR6199

llvm-svn: 94321

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# de5ab486 23-Jan-2010 Chris Lattner <[email protected]>

fix a crash in jump threading, PR6119

llvm-svn: 94319


# 6d6f10fe 06-Dec-2009 Chris Lattner <[email protected]>

fix PR5698

llvm-svn: 90708


# 3c9aca90 01-Dec-2009 Chris Lattner <[email protected]>

fix PR5640 by tracking whether a block is the header of a loop more
precisely, which prevents us from infinitely peeling the loop.

llvm-svn: 90211


# 5ff7f567 07-Nov-2009 Chris Lattner <[email protected]>

reapply 86289, 86278, 86270, 86267, 86266 & 86264 plus a fix
(making pred factoring only happen if threading is guaranteed
to be successful).

This now survives an X86-64 bootstrap of llvm-gcc.

llvm

reapply 86289, 86278, 86270, 86267, 86266 & 86264 plus a fix
(making pred factoring only happen if threading is guaranteed
to be successful).

This now survives an X86-64 bootstrap of llvm-gcc.

llvm-svn: 86355

show more ...


# 3a42e7ac 07-Nov-2009 Devang Patel <[email protected]>

Revert following patches to fix llvmgcc bootstrap.
86289, 86278, 86270, 86267, 86266 & 86264
Chris, please take a look.

llvm-svn: 86321


# a8b9ce3f 06-Nov-2009 Chris Lattner <[email protected]>

Fix a problem discovered on self host.

llvm-svn: 86278


# 046dff7a 05-Nov-2009 Chris Lattner <[email protected]>

merge a few crash tests into crash.ll

llvm-svn: 86119


Revision tags: llvmorg-2.6.0
# 7f903681 20-Oct-2009 Chris Lattner <[email protected]>

alternate fix for PR5258 which avoids worklist problems, with reduced testcase.

llvm-svn: 84667


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