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llvm-svn: 351803
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This patch adds a function to detect guards expressed in explicit control
flow form as branch by `and` with widenable condition intrinsic call:
%wc = call i1 @llvm.experimental.widenable.condition()
%guard_cond = and i1, %some_cond, %wc
br i1 %guard_cond, label %guarded, label %deopt
deopt:
<maybe some non-side-effecting instructions>
deoptimize()
This form can be used as alternative to implicit control flow guard
representation expressed by `experimental_guard` intrinsic.
Differential Revision: https://reviews.llvm.org/D56074
Reviewed By: reames
llvm-svn: 351791
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to reflect the new license.
We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.
Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.
llvm-svn: 351636
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rL340921 has been reverted by rL340923 due to linkage dependency
from Transform/Utils to Analysis which is not allowed. In this patch
this has been fixed, a new utility function moved to Analysis.
Differential Revision: https://reviews.llvm.org/D51152
llvm-svn: 341014
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