Summary: Declarations need to be filtered out when counting functions.
Reviewers: eraman
Subscribers: Prazek, llvm-commits
Differential Revision: https://reviews.llvm.org/D31336
llvm-svn: 298720
Summary: MSVC does this when producing a PDB.
Reviewers: ruiu
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D31316
llvm-svn: 298717
SimplifyDemandedUseBits for Add/Sub already recursed down LHS and RHS for simplifying bits. If that didn't provide any simplifications we fall back to calling computeKnownBits which will recurse again. Instead just take the known bits for LHS and RHS we already have and call into a new function in ValueTracking that can calculate the known bits given the LHS/RHS bits.
llvm-svn: 298711
Summary:
This script will automatically create a new stable merge request bug in
bugzilla for the given svn revision and release number.
Reviewers: hans
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D30905
llvm-svn: 298705
Summary:
I discovered accidentally that the operator== for TargetOptions
is stale - it is missing many fields that have been added over
the recent years. It isn't used, so remove it. Ditto for the
comparator in MCTargetOptions, which doesn't seem stale yet but is
unused.
Reviewers: echristo
Subscribers: llvm-commits, mehdi_amini
Differential Revision: https://reviews.llvm.org/D31301
llvm-svn: 298700
The patch rL298481 was reverted due to crash on clang-with-lto-ubuntu build.
The reason of the crash was type mismatch between either a or b and RHS in the following situation:
LHS = sext(a +nsw b) > RHS.
This is quite rare, but still possible situation. Normally we need to cast all {a, b, RHS} to their widest type.
But we try to avoid creation of new SCEV that are not constants to avoid initiating recursive analysis that
can take a lot of time and/or cache a bad value for iterations number. To deal with this, in this patch we
reject this case and will not try to analyze it if the type of sum doesn't match with the type of RHS. In this
situation we don't need to create any non-constant SCEVs.
This patch also adds an assertion to the method IsProvedViaContext so that we could fail on it and not
go further into range analysis etc (because in some situations these analyzes succeed even when the passed
arguments have wrong types, what should not normally happen).
The patch also contains a fix for a problem with too narrow scope of the analysis caused by wrong
usage of predicates in recursive invocations.
The regression test on the said failure: test/Analysis/ScalarEvolution/implied-via-addition.ll
llvm-svn: 298690
This change allows cross-compiling compiler-rt builtins for
multiple targets as part of runtimes on Darwin. This functionality
is already supported on other platforms.
Differential Revision: https://reviews.llvm.org/D30957
llvm-svn: 298678
r298178 capitalized the fields in `ArgListEntry`. All the official
targets were updated accordingly, but as an experimental target AVR
was missed.
llvm-svn: 298677
This prevents crashes when attempting to instrument functions containing
C++ try.
Sanitizer coverage will still fail at runtime when an exception is
thrown through a sancov instrumented function, but that seems marginally
better than what we have now. The full solution is to color the blocks
in LLVM IR and only instrument blocks that have an unambiguous color,
using the appropriate token.
llvm-svn: 298662
Summary:
For the following CFG:
A->B
B->C
A->C
If there is another edge B->D, then ABC should not be considered as triangle.
Reviewers: davidxl, iteratee
Reviewed By: iteratee
Subscribers: nemanjai, llvm-commits
Differential Revision: https://reviews.llvm.org/D31310
llvm-svn: 298661
Summary: In DeadArgumentElimination, the call instructions will be replaced. We also need to set the prof weights so that function inlining can find the correct profile.
Reviewers: eraman
Reviewed By: eraman
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D31143
llvm-svn: 298660
Library functions can have specific semantics that affect the behavior of
certain passes. DSE, for instance, gives special treatment to malloc-ed pointers
but not to pointers returned from an equivalently typed (but differently named)
function.
MetaRenamer ought not to alter program semantics, so library functions must
remain untouched.
Reviewers: mehdi_amini, majnemer, chandlerc, davide
Reviewed By: davide
Subscribers: davide, llvm-commits
Differential Revision: https://reviews.llvm.org/D31304
llvm-svn: 298659
Summary: The current prefix based function layout algorithm only looks at function's entry count, which is not sufficient. A function should be grouped together if its entry count or any call edge count is hot.
Reviewers: davidxl, eraman
Reviewed By: eraman
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D31225
llvm-svn: 298656
- Avoid explosive growth of the simplification queue by not queuing
expressions that are alredy in it.
- Add an iteration counter and abort after a sufficiently large number
of iterations (assuming that it's a symptom of an infinite loop).
llvm-svn: 298655
This could be used to either disable the runtimes build altogether
or avoid building them but still generate the build targets.
Differential Revision: https://reviews.llvm.org/D31060
llvm-svn: 298653
This is another step towards implementing register classes with
parametrized register/spill sizes.
Differential Revision: https://reviews.llvm.org/D31299
llvm-svn: 298652
Summary:
When dumping these records from an object file section, we should use
only one type database. However, when dumping from a PDB, we should use
two: one for the type stream and one for the IPI stream.
Certain type records that normally live in the .debug$T object file
section get moved over to the IPI stream of the PDB file and they get
new indices.
So far, I've noticed that the MSVC linker always moves these records
into IPI:
- LF_FUNC_ID
- LF_MFUNC_ID
- LF_STRING_ID
- LF_SUBSTR_LIST
- LF_BUILDINFO
- LF_UDT_MOD_SRC_LINE
These records have index fields that can point into TPI or IPI. In
particular, LF_SUBSTR_LIST and LF_BUILDINFO point to LF_STRING_ID
records to describe compilation command lines.
I've modified the dumper to have an optional pointer to the item DB, and
to do type name lookup of these fields in that DB. See printItemIndex.
The result is that our pdbdump-headers.test is more faithful to the PDB
contents and the output is less confusing.
Reviewers: ruiu
Subscribers: amccarth, zturner, llvm-commits
Differential Revision: https://reviews.llvm.org/D31309
llvm-svn: 298649
The old candidate collection method in the outliner caused some very large
regressions in compile time on large tests. For MultiSource/Benchmarks/7zip it
caused a 284.07 s or 1156% increase in compile time. On average, using the
SingleSource/MultiSource tests, it caused an average increase of 8 seconds in
compile time (something like 1000%).
This commit replaces that candidate collection method with a new one which
only visits each node in the tree once. This reduces the worst compile time
increase (still 7zip) to a 0.542 s overhead (22%) and the average compile time
increase on SingleSource and MultiSource to 0.018 s (4%).
llvm-svn: 298648
Summary:
loop unrolling and icp will make the sample profile annotation much harder in the backend. So disable these 2 optimization in the ThinLTO compile phase.
Will add a test in cfe in a separate patch.
Reviewers: tejohnson
Reviewed By: tejohnson
Subscribers: mehdi_amini, llvm-commits, Prazek
Differential Revision: https://reviews.llvm.org/D31217
llvm-svn: 298646
Krzysztof Parzyszek