Retrying r268550 which was reverted at r268577 due a memory sanitizer failure.
I have not been able to reproduce that failure, but I've taken a guess at fixing
the problem in this version of the patch and will watch for another failure.
Original commit message:
Unlike earlier similar fixes, we need to recalculate the branch weights
in this case.
Differential Revision: http://reviews.llvm.org/D19674
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@268751 91177308-0d34-0410-b5e6-96231b3b80d8
Allowing overriding the default ASAN shadow mapping offset with the
-asan-shadow-offset option, and allow zero to be specified for both offset and
scale.
Patch by Aaron Carroll <aaronc@apple.com>.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@268724 91177308-0d34-0410-b5e6-96231b3b80d8
Summary: We need to clean up CFG before assigning discriminator to minimize the impact of optimization on debug info.
Reviewers: davidxl, dblaikie, dnovillo
Subscribers: dnovillo, danielcdh, llvm-commits
Differential Revision: http://reviews.llvm.org/D19926
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@268675 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Some PHIs can have expressions that are not AddRecExprs due to the presence
of sext/zext instructions. In order to prevent the Loop Vectorizer from
bailing out when encountering these PHIs, we now coerce the SCEV
expressions to AddRecExprs using SCEV predicates (when possible).
We only do this when the alternative would be to not vectorize.
Reviewers: mzolotukhin, anemet
Subscribers: mssimpso, sanjoy, mzolotukhin, llvm-commits
Differential Revision: http://reviews.llvm.org/D17153
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@268633 91177308-0d34-0410-b5e6-96231b3b80d8
This moves the validation of PHI inductions into a
separate method, making it easier to reuse this
logic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@268632 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
When launching ThinLTO backends in a distributed build (currently
supported in gold via the thinlto-index-only plugin option), emit
an individual index file for each backend process as described here:
http://lists.llvm.org/pipermail/llvm-dev/2016-April/098272.html
The individual index file encodes the summary and module information
required for implementing the importing/exporting decisions made
for a given module in the thin link step.
This is in place of the current mechanism that uses the combined index
to make importing decisions in each back end independently. It is an
enabler for doing global summary based optimizations in the thin link
step (which will be recorded in the individual index files), and reduces
the size of the index that must be sent to each backend process, and
the amount of work to scan it in the backends.
Rather than create entirely new ModuleSummaryIndex structures (and all
the included unique_ptrs) for each backend index file, a map is created
to record all of the GUID and summary pointers needed for a particular
index file. The IndexBitcodeWriter walks this map instead of the full
index (hiding the details of managing the appropriate summary iteration
in a new iterator subclass). This is more efficient than walking the
entire combined index and filtering out just the needed summaries during
each backend bitcode index write.
Depends on D19481.
Reviewers: joker.eph
Subscribers: llvm-commits, joker.eph
Differential Revision: http://reviews.llvm.org/D19556
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@268627 91177308-0d34-0410-b5e6-96231b3b80d8
Allowing overriding the default ASAN shadow mapping offset with the
-asan-shadow-offset option, and allow zero to be specified for both offset and
scale.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@268586 91177308-0d34-0410-b5e6-96231b3b80d8
This reapplies commit r268521, that was reverted in r268530 due to a test failure in select-implied.ll
Modified the test case to reflect the new change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@268557 91177308-0d34-0410-b5e6-96231b3b80d8
This patch fixes PR27615.
@llvm.dbg.value instructions no longer count towards the maximum number of
instructions to look back at in the instruction list when searching for a
store instruction. This should make the output consistent between debug and
non-debug build.
Patch by Henric Karlsson <henric.karlsson@ericsson.com>!
Differential Revision: http://reviews.llvm.org/D19912
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@268512 91177308-0d34-0410-b5e6-96231b3b80d8
Goal of this change is to guarantee stable ordering of the statepoint arguments and other
newly inserted values such as gc.relocates. Previously we had explicit sorting in a couple
of places. However for unnamed values ordering was partial and overall we didn't have any
strong invariant regarding it. This change switches all data structures to use SetVector's
and MapVector's which provide possibility for deterministic iteration over them.
Explicit sorting is now redundant and was removed.
Differential Revision: http://reviews.llvm.org/D19669
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@268502 91177308-0d34-0410-b5e6-96231b3b80d8
We forgot to consider the target of ifuncs when considering if a
function was alive or dead.
N.B. Also update a few auxiliary tools like bugpoint and
verify-uselistorder.
This fixes PR27593.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@268468 91177308-0d34-0410-b5e6-96231b3b80d8
SCEV caches whether SCEV expressions are loop invariant, variant or
computable. LICM breaks this cache, almost by definition; so clear the
SCEV disposition cache if LICM changed anything.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@268408 91177308-0d34-0410-b5e6-96231b3b80d8
Added some tests despite being NFC, since it looks like nothing was
exercising the "all incoming values to exit PHIs are same" logic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@268407 91177308-0d34-0410-b5e6-96231b3b80d8
`Loop::makeLoopInvariant` can hoist instructions out of loops, so loop
dispositions for the loop it operated on may need to be cleared. We can
be smarter here (especially around how `forgetLoopDispositions` is
implemented), but let's be correct first.
Fixes PR27570.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@268406 91177308-0d34-0410-b5e6-96231b3b80d8
Be more specific in describing compression failures. Also, check for
this kind of error in emitNameData().
This is part of a series of patches to transition ProfileData over to
the stricter Error/Expected interface.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@268400 91177308-0d34-0410-b5e6-96231b3b80d8
This pass is supposed to reduce the size of the IR for compile time
purpose. We should run it ASAP, except when we prepare for LTO or
ThinLTO, and we want to keep them available for link-time inline.
Differential Revision: http://reviews.llvm.org/D19813
From: Mehdi Amini <mehdi.amini@apple.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@268394 91177308-0d34-0410-b5e6-96231b3b80d8
