oota-llvm.git
10 years agoUse an integer constant for FABS / FNEG (x86).
Sanjay Patel [Mon, 1 Sep 2014 19:01:47 +0000 (19:01 +0000)]
Use an integer constant for FABS / FNEG (x86).

This change will ease refactoring LowerFABS() and LowerFNEG()
since they have a lot of overlap.

Remove the creation of a floating point constant from an integer
because it's going to be used for a bitwise integer op anyway.

No change to codegen expected, but the verbose comment string
for asm output may change from float values to hex (integer),
depending on whether the constant already exists or not.

Differential Revision: http://reviews.llvm.org/D5052

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216889 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoAdd a convenience method to copy wrapping, exact, and fast-math flags (NFC).
Sanjay Patel [Mon, 1 Sep 2014 18:44:57 +0000 (18:44 +0000)]
Add a convenience method to copy wrapping, exact, and fast-math flags (NFC).

The loop vectorizer preserves wrapping, exact, and fast-math properties of scalar instructions.
This patch adds a convenience method to make that operation easier because we need to do this
in the loop vectorizer, SLP vectorizer, and possibly other places.

Although this is a 'no functional change' patch, I've added a testcase to verify that the exact
flag is preserved by the loop vectorizer. The wrapping and fast-math flags are already checked
in existing testcases.

Differential Revision: http://reviews.llvm.org/D5138

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216886 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoFix a typo in comments in r216862, NFC
Jingyue Wu [Mon, 1 Sep 2014 14:55:04 +0000 (14:55 +0000)]
Fix a typo in comments in r216862, NFC

PR20766 -> PR20776. Thanks Roman Divacky for the catch!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216883 91177308-0d34-0410-b5e6-96231b3b80d8

10 years ago[ARM] Add Thumb-2 code size optimization regression test for EOR.
Tilmann Scheller [Mon, 1 Sep 2014 12:59:34 +0000 (12:59 +0000)]
[ARM] Add Thumb-2 code size optimization regression test for EOR.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216881 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoARM] Add Thumb-2 code size optimization regression test for BIC.
Tilmann Scheller [Mon, 1 Sep 2014 12:53:29 +0000 (12:53 +0000)]
ARM] Add Thumb-2 code size optimization regression test for BIC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216880 91177308-0d34-0410-b5e6-96231b3b80d8

10 years ago[asan-assembly-instrumentation] Prologue and epilogue are moved out from InstrumentMe...
Yuri Gorshenin [Mon, 1 Sep 2014 12:51:00 +0000 (12:51 +0000)]
[asan-assembly-instrumentation] Prologue and epilogue are moved out from InstrumentMemOperand().

Reviewers: eugenis

Subscribers: llvm-commits

Differential revision: http://reviews.llvm.org/D4923

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216879 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoThumb2 M-class MSR instruction support changes
Renato Golin [Mon, 1 Sep 2014 11:25:07 +0000 (11:25 +0000)]
Thumb2 M-class MSR instruction support changes

This patch implements a few changes related to the Thumb2 M-class MSR instruction:
 * better handling of unpredictable encodings,
 * recognition of the _g and _nzcvqg variants by the asm parser only if the DSP
   extension is available, preferred output of MSR APSR moves with the _<bits>
   suffix for v7-M.

Patch by Petr Pavlu.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216874 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoFix in InlineSpiller to make the rematerilization loop also consider
Patrik Hagglund [Mon, 1 Sep 2014 11:04:07 +0000 (11:04 +0000)]
Fix in InlineSpiller to make the rematerilization loop also consider
implicit uses of the whole register when a sub register is defined.

Now the same iterator is used in the rematerilization loop as in the
spill loop later.

Patch provided by Mikael Holmen.

This fix was proposed and reviewed by Quentin Colombet,
http://lists.cs.uiuc.edu/pipermail/llvmdev/2014-August/076135.html.

Unfortunately, this error in the rematerilization code has only been
seen in a large test case for an out-of-tree target, and is probably
hard to reproduce on an in-tree target. Therefore, no testcase is
provided.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216873 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoRevert "[asan-assembly-instrumentation] Prologue and epilogue are moved out from...
Yuri Gorshenin [Mon, 1 Sep 2014 10:24:04 +0000 (10:24 +0000)]
Revert "[asan-assembly-instrumentation] Prologue and epilogue are moved out from InstrumentMemOperand()."

This reverts commit 895aa397038b8de86d83ac0997a70949a486e112.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216872 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoFix a really bad miscompile introduced in r216865 - the else-if logic
Chandler Carruth [Mon, 1 Sep 2014 10:09:18 +0000 (10:09 +0000)]
Fix a really bad miscompile introduced in r216865 - the else-if logic
chain became completely broken here as *all* intrinsic users ended up
being skipped, and the ones that seemed to be singled out were actually
the exact wrong set.

This is a great example of why long else-if chains can be easily
confusing. Switch the entire code to use early exits and early continues
to have simpler (and more importantly, correct) logic here, as well as
fixing the reversed logic for detecting and continuing on lifetime
intrinsics.

I've also significantly cleaned up the test case and added another test
case demonstrating an example where the optimization is not (trivially)
safe to perform.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216871 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoSmall refactor on VectorizerHint for deduplication
Renato Golin [Mon, 1 Sep 2014 10:00:17 +0000 (10:00 +0000)]
Small refactor on VectorizerHint for deduplication

Previously, the hint mechanism relied on clean up passes to remove redundant
metadata, which still showed up if running opt at low levels of optimization.
That also has shown that multiple nodes of the same type, but with different
values could still coexist, even if temporary, and cause confusion if the
next pass got the wrong value.

This patch makes sure that, if metadata already exists in a loop, the hint
mechanism will never append a new node, but always replace the existing one.
It also enhances the algorithm to cope with more metadata types in the future
by just adding a new type, not a lot of code.

Re-applying again due to MSVC 2013 being minimum requirement, and this patch
having C++11 that MSVC 2012 didn't support.

Fixes PR20655.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216870 91177308-0d34-0410-b5e6-96231b3b80d8

10 years ago[asan-assembly-instrumentation] Prologue and epilogue are moved out from InstrumentMe...
Yuri Gorshenin [Mon, 1 Sep 2014 09:56:45 +0000 (09:56 +0000)]
[asan-assembly-instrumentation] Prologue and epilogue are moved out from InstrumentMemOperand().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216869 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoFeed AA to the inliner and use AA->getModRefBehavior in AddAliasScopeMetadata
Hal Finkel [Mon, 1 Sep 2014 09:01:39 +0000 (09:01 +0000)]
Feed AA to the inliner and use AA->getModRefBehavior in AddAliasScopeMetadata

This feeds AA through the IFI structure into the inliner so that
AddAliasScopeMetadata can use AA->getModRefBehavior to figure out which
functions only access their arguments (instead of just hard-coding some
knowledge of memory intrinsics). Most of the information is only available from
BasicAA; this is important for preserving alias scoping information for
target-specific intrinsics when doing the noalias parameter attribute to
metadata conversion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216866 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoIgnore lifetime intrinsics in use list for MemCpyOptimizer. Patch by Luqman Aden...
Nick Lewycky [Mon, 1 Sep 2014 06:03:11 +0000 (06:03 +0000)]
Ignore lifetime intrinsics in use list for MemCpyOptimizer. Patch by Luqman Aden, review by Hal Finkel.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216865 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoRemove an errant outer loop that contains nothing but an inner loop over exactly...
Nick Lewycky [Mon, 1 Sep 2014 05:17:15 +0000 (05:17 +0000)]
Remove an errant outer loop that contains nothing but an inner loop over exactly the same elements. While no functionality is change intended (and hence there are no changes to tests), you don't want to skip this revision if bisecting for errors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216864 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoFix AddAliasScopeMetadata again - alias.scope must be a complete description
Hal Finkel [Mon, 1 Sep 2014 04:26:40 +0000 (04:26 +0000)]
Fix AddAliasScopeMetadata again - alias.scope must be a complete description

I thought that I had fixed this problem in r216818, but I did not do a very
good job. The underlying issue is that when we add alias.scope metadata we are
asserting that this metadata completely describes the aliasing relationships
within the current aliasing scope domain, and so in the context of translating
noalias argument attributes, the pointers must all be based on noalias
arguments (as underlying objects) and have no other kind of underlying object.
In r216818 excluding appropriate accesses from getting alias.scope metadata is
done by looking for underlying objects that are not identified function-local
objects -- but that's wrong because allocas, etc. are also function-local
objects and we need to explicitly check that all underlying objects are the
noalias arguments for which we're adding metadata aliasing scopes.

This fixes the underlying-object check for adding alias.scope metadata, and
does some refactoring of the related capture-checking eligibility logic (and
adds more comments; hopefully making everything a bit clearer).

Fixes self-hosting on x86_64 with -mllvm -enable-noalias-to-md-conversion (the
feature is still disabled by default).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216863 91177308-0d34-0410-b5e6-96231b3b80d8

10 years ago[MachineSink] Use the real post dominator tree
Jingyue Wu [Mon, 1 Sep 2014 03:47:25 +0000 (03:47 +0000)]
[MachineSink] Use the real post dominator tree

Summary:
Fixes a FIXME in MachineSinking. Instead of using the simple heuristics
in isPostDominatedBy, use the real MachinePostDominatorTree. The old
heuristics caused instructions to sink unnecessarily, and might create
register pressure.

Test Plan:
Added a NVPTX codegen test to verify that our change is in effect. It also
shows the unnecessary register pressure caused by over-sinking. Updated
affected tests in AArch64 and X86.

Reviewers: eliben, meheff, Jiangning

Reviewed By: Jiangning

Subscribers: jholewinski, aemerson, mcrosier, llvm-commits

Differential Revision: http://reviews.llvm.org/D4814

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216862 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoDebugInfo: Elide lexical scopes which only contain other (inline or lexical) scopes.
David Blaikie [Sun, 31 Aug 2014 21:26:22 +0000 (21:26 +0000)]
DebugInfo: Elide lexical scopes which only contain other (inline or lexical) scopes.

DW_TAG_lexical_scopes inform debuggers about the instruction range for
which a given variable (or imported declaration/module/etc) is valid. If
the scope doesn't itself contain any such entities, it's a waste of
space and should be omitted.

We were correctly doing this for entirely empty leaves, but not for
intermediate nodes.

Reduces total (not just debug sections) .o file size for a bootstrap
-gmlt LLVM by 22% and bootstrap -gmlt clang executable by 13%. The wins
for a full -g build will be less as a % (and in absolute terms), but
should still be substantial - with some of that win being fewer
relocations, thus more substantiall reducing link times than fewer bytes
alone would have.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216861 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoConsider addrspaces in canLosslesslyBitCastTo()
Matt Arsenault [Sun, 31 Aug 2014 19:19:57 +0000 (19:19 +0000)]
Consider addrspaces in canLosslesslyBitCastTo()

Make this conservatively correct and report false for different
address spaces, which might require a nontrivial translation.

Based on the few uses of this, I don't think this currently
breaks anything.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216846 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoDebugInfo: Move argument creation up into the caller that's unambiguously handling...
David Blaikie [Sun, 31 Aug 2014 18:04:28 +0000 (18:04 +0000)]
DebugInfo: Move argument creation up into the caller that's unambiguously handling the subprogram scope (replacing a conditional with an assertion in the process)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216845 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoDelay adding imported entity DIEs to the lexical scope, streamlining the check for...
David Blaikie [Sun, 31 Aug 2014 05:46:17 +0000 (05:46 +0000)]
Delay adding imported entity DIEs to the lexical scope, streamlining the check for "this scope has nothing in it"

This makes the emptiness of the scope with regards to variables and
nested scopes is the same as with regards to imported entities. Just
check if we had nothing at all before we build the node.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216840 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoModify DwarfDebug::constructImportedEntityDIE to return rather than insert into the...
David Blaikie [Sun, 31 Aug 2014 05:41:15 +0000 (05:41 +0000)]
Modify DwarfDebug::constructImportedEntityDIE to return rather than insert into the scope

Another step towards improving lexical_scope handling

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216839 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoRefactor constructImportedEntityDIE(DwarfUnit, DIImportedEntity) to return a DIE...
David Blaikie [Sun, 31 Aug 2014 05:32:06 +0000 (05:32 +0000)]
Refactor constructImportedEntityDIE(DwarfUnit, DIImportedEntity) to return a DIE rather than inserting it into a specified context.

First of many steps to improve lexical scope construction (to omit
trivial lexical scopes - those without any direct variables). To that
end it's easier not to create imported entities directly into the
lexical scope node, but to build them, then add them if necessary.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216838 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoSimplify expression using container's front() rather than begin()->
David Blaikie [Sun, 31 Aug 2014 02:14:26 +0000 (02:14 +0000)]
Simplify expression using container's front() rather than begin()->

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216833 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoAdd some negative (and positive) static_assert checks for ArrayRef-of-pointer convers...
David Blaikie [Sun, 31 Aug 2014 01:33:41 +0000 (01:33 +0000)]
Add some negative (and positive) static_assert checks for ArrayRef-of-pointer conversions introduced in r216709

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216830 91177308-0d34-0410-b5e6-96231b3b80d8

10 years ago[PATCH][Interpreter] Add missing FP intrinsic lowering.
Josh Klontz [Sat, 30 Aug 2014 18:33:35 +0000 (18:33 +0000)]
[PATCH][Interpreter] Add missing FP intrinsic lowering.

Summary:
This extends the work done in [1], adding missing intrinsic lowering for floor, trunc, round and copysign.

[1] http://comments.gmane.org/gmane.comp.compilers.llvm.cvs/199372

Test Plan: Extended `test/ExecutionEngine/Interpreter/intrinsics.ll` to test the additional missing intrinsics. All tests pass.

Reviewers: dexonsmith

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D5120

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216827 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoTeach llvm-bcanalyzer to use one stream's BLOCKINFO to read another stream.
Jordan Rose [Sat, 30 Aug 2014 17:07:55 +0000 (17:07 +0000)]
Teach llvm-bcanalyzer to use one stream's BLOCKINFO to read another stream.

This allows streams that only use BLOCKINFO for debugging purposes to omit
the block entirely. As long as another stream is available with the correct
BLOCKINFO, the first stream can still be analyzed and dumped.

As part of this commit, BitstreamReader gets a move constructor and move
assignment operator, as well as a takeBlockInfo method.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216826 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoRemove 'virtual' keyword from methods markedwith 'override' keyword.
Craig Topper [Sat, 30 Aug 2014 16:48:34 +0000 (16:48 +0000)]
Remove 'virtual' keyword from methods markedwith 'override' keyword.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216823 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoUse StringRef to avoid copies and simplify code.
Craig Topper [Sat, 30 Aug 2014 16:48:22 +0000 (16:48 +0000)]
Use StringRef to avoid copies and simplify code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216822 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoAdd a test for converting ArrayRef<T *> to ArrayRef<const T *>.
Craig Topper [Sat, 30 Aug 2014 16:48:19 +0000 (16:48 +0000)]
Add a test for converting ArrayRef<T *> to ArrayRef<const T *>.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216821 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoFix some cases where StringRef was being passed by const reference. Remove const...
Craig Topper [Sat, 30 Aug 2014 16:48:02 +0000 (16:48 +0000)]
Fix some cases where StringRef was being passed by const reference. Remove const from some other StringRefs since its implicitly const already.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216820 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoJIT support has been added awhile ago.
Brad Smith [Sat, 30 Aug 2014 14:52:34 +0000 (14:52 +0000)]
JIT support has been added awhile ago.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216819 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoFix AddAliasScopeMetadata to not add scopes when deriving from unknown pointers
Hal Finkel [Sat, 30 Aug 2014 12:48:33 +0000 (12:48 +0000)]
Fix AddAliasScopeMetadata to not add scopes when deriving from unknown pointers

The previous implementation of AddAliasScopeMetadata, which adds noalias
metadata to preserve noalias parameter attribute information when inlining had
a flaw: it would add alias.scope metadata to accesses which might have been
derived from pointers other than noalias function parameters. This was
incorrect because even some access known not to alias with all noalias function
parameters could easily alias with an access derived from some other pointer.
Instead, when deriving from some unknown pointer, we cannot add alias.scope
metadata at all. This fixes a miscompile of the test-suite's tramp3d-v4.
Furthermore, we cannot add alias.scope to functions unless we know they
access only argument-derived pointers (currently, we know this only for
memory intrinsics).

Also, we fix a theoretical problem with using the NoCapture attribute to skip
the capture check. This is incorrect (as explained in the comment added), but
would not matter in any code generated by Clang because we get only inferred
nocapture attributes in Clang-generated IR.

This functionality is not yet enabled by default.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216818 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoInstCombine: Respect recursion depth in visitUDivOperand
David Majnemer [Sat, 30 Aug 2014 09:19:05 +0000 (09:19 +0000)]
InstCombine: Respect recursion depth in visitUDivOperand

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216817 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoInstCombine: Try harder to combine icmp instructions
David Majnemer [Sat, 30 Aug 2014 06:18:20 +0000 (06:18 +0000)]
InstCombine: Try harder to combine icmp instructions

consider: (and (icmp X, Y), (and Z, (icmp A, B)))
It may be possible to combine (icmp X, Y) with (icmp A, B).
If we successfully combine, create an 'and' instruction with Z.

This fixes PR20814.

N.B. There is room for improvement after this change but I'm not
convinced it's worth chasing yet.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216814 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoRevert r216805 "[MachineCombiner][AArch64] Use the correct register class for MADD...
Juergen Ributzka [Sat, 30 Aug 2014 06:16:26 +0000 (06:16 +0000)]
Revert r216805 "[MachineCombiner][AArch64] Use the correct register class for MADD, SUB, and OR."

I think this broke the build bot. Reverting it for now until I have time to take a closer look.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216813 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoFixed a build problem when there were headers
Sean Callanan [Sat, 30 Aug 2014 02:30:02 +0000 (02:30 +0000)]
Fixed a build problem when there were headers
for a different LLVM present in the system header
lookup path.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216812 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoAdd missing const to StringRef.copy()
Nick Kledzik [Sat, 30 Aug 2014 02:29:49 +0000 (02:29 +0000)]
Add missing const to StringRef.copy()

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216811 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoFix typo and formatting
Nick Kledzik [Sat, 30 Aug 2014 01:57:34 +0000 (01:57 +0000)]
Fix typo and formatting

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216809 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoObject/llvm-objdump: allow dumping of mach-o exports trie
Nick Kledzik [Sat, 30 Aug 2014 00:20:14 +0000 (00:20 +0000)]
Object/llvm-objdump: allow dumping of mach-o exports trie

MachOObjectFile in lib/Object currently has no support for parsing the rebase,
binding, and export information from the LC_DYLD_INFO load command in final
linked mach-o images. This patch adds support for parsing the exports trie data
structure. It also adds an option to llvm-objdump to dump that export info.

I did the exports parsing first because it is the hardest. The information is
encoded in a trie structure, but the standard ObjectFile way to inspect content
is through iterators. So I needed to make an iterator that would do a
non-recursive walk through the trie and maintain the concatenation of edges
needed for the current string prefix.

I plan to add similar support in MachOObjectFile and llvm-objdump to
parse/display the rebasing and binding info too.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216808 91177308-0d34-0410-b5e6-96231b3b80d8

10 years ago[MachineCombiner][AArch64] Use the correct register class for MADD, SUB, and OR.
Juergen Ributzka [Fri, 29 Aug 2014 23:48:09 +0000 (23:48 +0000)]
[MachineCombiner][AArch64] Use the correct register class for MADD, SUB, and OR.

Select the correct register class for the various instructions that are
generated when combining instructions and constrain the registers to the
appropriate register class.

This fixes rdar://problem/18183707.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216805 91177308-0d34-0410-b5e6-96231b3b80d8

10 years ago[FastISel][AArch64] Use the correct register class for branches.
Juergen Ributzka [Fri, 29 Aug 2014 23:48:06 +0000 (23:48 +0000)]
[FastISel][AArch64] Use the correct register class for branches.

Also constrain the register class for branches.

This fixes rdar://problem/18181496.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216804 91177308-0d34-0410-b5e6-96231b3b80d8

10 years ago[MachineSinking] Clear kill flag of all operands at all their uses.
Juergen Ributzka [Fri, 29 Aug 2014 23:48:03 +0000 (23:48 +0000)]
[MachineSinking] Clear kill flag of all operands at all their uses.

When sinking an instruction it might be moved past the original last use of one
of its operands. This last use has the kill flag set and the verifier will
obviously complain about this.

Before Machine Sinking (AArch64):
%vreg3<def> = ASRVXr %vreg1, %vreg2<kill>
%XZR<def> = SUBSXrs %vreg4, %vreg1<kill>, 160, %NZCV<imp-def>
...

After Machine Sinking:
%XZR<def> = SUBSXrs %vreg4, %vreg1<kill>, 160, %NZCV<imp-def>
...
%vreg3<def> = ASRVXr %vreg1, %vreg2<kill>

This fix clears all the kill flags in all instruction that use the same operands
as the instruction that is being sunk.

This fixes rdar://problem/18180996.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216803 91177308-0d34-0410-b5e6-96231b3b80d8

10 years ago[MCJIT] Move endian-aware read/writes from RuntimeDyldMachO into
Lang Hames [Fri, 29 Aug 2014 23:17:47 +0000 (23:17 +0000)]
[MCJIT] Move endian-aware read/writes from RuntimeDyldMachO into
RuntimeDyldImpl.

These are platform independent, and moving them to the base class allows
RuntimeDyldChecker to use them too.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216801 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoDebug info: Add a new explicit DIDescriptor flag for the "public" access
Adrian Prantl [Fri, 29 Aug 2014 22:44:07 +0000 (22:44 +0000)]
Debug info: Add a new explicit DIDescriptor flag for the "public" access
specifier and change the default behavior to only emit the
DW_AT_accessibility(public) attribute when the isPublic() is explicitly
set.

rdar://problem/18154959

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216799 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoComment only: Annotate loop as per mailing list discussion
Jean-Luc Duprat [Fri, 29 Aug 2014 22:43:30 +0000 (22:43 +0000)]
Comment only: Annotate loop as per mailing list discussion

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216798 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoMake isValidMCLOHType take unsigned instead of enum to avoid loading invalid enum...
Alexey Samsonov [Fri, 29 Aug 2014 22:34:28 +0000 (22:34 +0000)]
Make isValidMCLOHType take unsigned instead of enum to avoid loading invalid enum values

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216797 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoNext bit of support for llvm-objdump’s -private-headers for Mach-O files.
Kevin Enderby [Fri, 29 Aug 2014 22:30:52 +0000 (22:30 +0000)]
Next bit of support for llvm-objdump’s -private-headers for Mach-O files.

This adds the printing of the LC_SEGMENT load command and sections,
LC_SYMTAB and LC_DYSYMTAB load commands.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216795 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoAArch64: Silence -Wabsolute-value warning with std::abs
Reid Kleckner [Fri, 29 Aug 2014 22:14:26 +0000 (22:14 +0000)]
AArch64: Silence -Wabsolute-value warning with std::abs

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216794 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoSpeculative build fix for const, gcc, and ArrayRef overloads
Reid Kleckner [Fri, 29 Aug 2014 22:12:08 +0000 (22:12 +0000)]
Speculative build fix for const, gcc, and ArrayRef overloads

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216793 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoRevert accidentally committed patches r216787-r216789
David Blaikie [Fri, 29 Aug 2014 22:10:52 +0000 (22:10 +0000)]
Revert accidentally committed patches r216787-r216789

Rushed when I realized I hadn't committed the FreeDeleter for a clang
change I'd committed, and didn't check that I had things lying around in
my client.

Apologies for the noise.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216792 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoAdd a trivial functor for use with unique_ptrs managing memory that needs to be freed...
David Blaikie [Fri, 29 Aug 2014 22:05:31 +0000 (22:05 +0000)]
Add a trivial functor for use with unique_ptrs managing memory that needs to be freed rather than deleted.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216790 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoOmit DW_AT_artificial, DW_AT_external, and similar attributes under -gmlt
David Blaikie [Fri, 29 Aug 2014 22:05:29 +0000 (22:05 +0000)]
Omit DW_AT_artificial, DW_AT_external, and similar attributes under -gmlt

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216789 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoOmit dwarf::DW_AT_frame_base under -gmlt
David Blaikie [Fri, 29 Aug 2014 22:05:27 +0000 (22:05 +0000)]
Omit dwarf::DW_AT_frame_base under -gmlt

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216788 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoStuff
David Blaikie [Fri, 29 Aug 2014 22:05:26 +0000 (22:05 +0000)]
Stuff

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216787 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoFix typos in comments, NFC
Robin Morisset [Fri, 29 Aug 2014 21:53:01 +0000 (21:53 +0000)]
Fix typos in comments, NFC

Summary: Just fixing comments, no functional change.

Test Plan: N/A

Reviewers: jfb

Subscribers: mcrosier, llvm-commits

Differential Revision: http://reviews.llvm.org/D5130

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216784 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoAdd a const and munge some comments
Reid Kleckner [Fri, 29 Aug 2014 21:42:21 +0000 (21:42 +0000)]
Add a const and munge some comments

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216781 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agomusttail: Forward regparms of variadic functions on x86_64
Reid Kleckner [Fri, 29 Aug 2014 21:42:08 +0000 (21:42 +0000)]
musttail: Forward regparms of variadic functions on x86_64

Summary:
If a variadic function body contains a musttail call, then we copy all
of the remaining register parameters into virtual registers in the
function prologue. We track the virtual registers through the function
body, and add them as additional registers to pass to the call. Because
this is all done in virtual registers, the register allocator usually
gives us good code. If the function does a call, however, it will have
to spill and reload all argument registers (ew).

Forwarding regparms on x86_32 is not implemented because most compilers
don't support varargs in 32-bit with regparms.

Reviewers: majnemer

Subscribers: aemerson, llvm-commits

Differential Revision: http://reviews.llvm.org/D5060

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216780 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoVerifier: Don't reject varargs callee cleanup functions
Reid Kleckner [Fri, 29 Aug 2014 21:25:28 +0000 (21:25 +0000)]
Verifier: Don't reject varargs callee cleanup functions

We've rejected these kinds of functions since r28405 in 2006 because
it's impossible to lower the return of a callee cleanup varargs
function. However there are lots of legal ways to leave such a function
without returning, such as aborting. Today we can leave a function with
a musttail call to another function with the correct prototype, and
everything works out.

I'm removing the verifier check declaring that a normal return from such
a function is UB.

Reviewed By: nlewycky

Differential Revision: http://reviews.llvm.org/D5059

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216779 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoRemove spurious mask operations from AArch64 add->compares on 16 and 8 bit values
Louis Gerbarg [Fri, 29 Aug 2014 21:00:22 +0000 (21:00 +0000)]
Remove spurious mask operations from AArch64 add->compares on 16 and 8 bit values

This patch checks for DAG patterns that are an add or a sub followed by a
compare on 16 and 8 bit inputs. Since AArch64 does not support those types
natively they are legalized into 32 bit values, which means that mask operations
are inserted into the DAG to emulate overflow behaviour. In many cases those
masks do not change the result of the processing and just introduce a dependent
operation, often in the middle of a hot loop.

This patch detects the relevent DAG patterns and then tests to see if the
transforms are equivalent with and without the mask, removing the mask if
possible. The exact mechanism of this patch was discusses in
http://lists.cs.uiuc.edu/pipermail/llvmdev/2014-July/074444.html

There is a reasonably good chance there are missed oppurtunities due to similiar
(but not identical) DAG patterns that could be funneled into this test, adding
them should be simple if we see test cases.

Tests included.

rdar://13754426

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216776 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoX86: Fix conflict over ESI between base register and rep;movsl
Reid Kleckner [Fri, 29 Aug 2014 20:50:31 +0000 (20:50 +0000)]
X86: Fix conflict over ESI between base register and rep;movsl

The new solution is to not use this lowering if there are any dynamic
allocas in the current function. We know up front if there are dynamic
allocas, but we don't know if we'll need to create stack temporaries
with large alignment during lowering. Conservatively assume that we will
need such temporaries.

Reviewed By: hans

Differential Revision: http://reviews.llvm.org/D5128

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216775 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoanother typo
Sanjay Patel [Fri, 29 Aug 2014 20:35:00 +0000 (20:35 +0000)]
another typo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216774 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agotypo
Sanjay Patel [Fri, 29 Aug 2014 20:34:17 +0000 (20:34 +0000)]
typo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216773 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoRelax the constraint more in MemoryDependencyAnalysis.cpp
Robin Morisset [Fri, 29 Aug 2014 20:32:58 +0000 (20:32 +0000)]
Relax the constraint more in MemoryDependencyAnalysis.cpp

Even loads/stores that have a stronger ordering than monotonic can be safe.
The rule is no release-acquire pair on the path from the QueryInst, assuming that
the QueryInst is not atomic itself.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216771 91177308-0d34-0410-b5e6-96231b3b80d8

10 years ago[X86] Refactor X86ISelDAGToDAG::SelectAtomicLoadArith - NFC
Robin Morisset [Fri, 29 Aug 2014 20:19:23 +0000 (20:19 +0000)]
[X86] Refactor X86ISelDAGToDAG::SelectAtomicLoadArith - NFC

Summary:
Mostly renaming the (not very explicit) variables Tmp0, .. Tmp4, and grouping
related statements together, along with a few lines of comments for the
surprising parts.

No functional change intended.

Test Plan: make check-all

Reviewers: jfb

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D5088

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216768 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoAdd missing mach-o EXPORT_SYMBOL_FLAG_KIND_ABSOLUTE
Nick Kledzik [Fri, 29 Aug 2014 19:55:55 +0000 (19:55 +0000)]
Add missing mach-o EXPORT_SYMBOL_FLAG_KIND_ABSOLUTE

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216759 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoTablegen fixes for new syntax when initializing bits from variables.
Jean-Luc Duprat [Fri, 29 Aug 2014 19:41:04 +0000 (19:41 +0000)]
Tablegen fixes for new syntax when initializing bits from variables.
Followup to r215086.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216757 91177308-0d34-0410-b5e6-96231b3b80d8

10 years ago[FastISel][AArch64] Fix an incorrect kill flag due to a bug in SelectTrunc.
Juergen Ributzka [Fri, 29 Aug 2014 17:58:16 +0000 (17:58 +0000)]
[FastISel][AArch64] Fix an incorrect kill flag due to a bug in SelectTrunc.

When we select a trunc instruction we don't emit any code if the type is already
i32 or smaller. This is because the instruction that uses the truncated value
will deal with it.

This behavior can incorrectly transfer a kill flag, which was meant for the
result of the truncate, onto the source register.

%2 = trunc i32 %1 to i16
... = ... %2                -> ... = ... vreg1 <kill>
... = ... %1                   ... = ... vreg1

This commit fixes this by emitting a COPY instruction, so that the result and
source register are distinct virtual registers.

This fixes rdar://problem/18178188.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216750 91177308-0d34-0410-b5e6-96231b3b80d8

10 years ago[ARM] Add Thumb-2 code size optimization test for ASR (register).
Tilmann Scheller [Fri, 29 Aug 2014 17:19:00 +0000 (17:19 +0000)]
[ARM] Add Thumb-2 code size optimization test for ASR (register).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216746 91177308-0d34-0410-b5e6-96231b3b80d8

10 years ago[ARM] Add Thumb-2 code size optimization test for ASR (immediate).
Tilmann Scheller [Fri, 29 Aug 2014 17:02:28 +0000 (17:02 +0000)]
[ARM] Add Thumb-2 code size optimization test for ASR (immediate).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216744 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoFix a typo in AddAliasScopeMetadata
Hal Finkel [Fri, 29 Aug 2014 16:33:41 +0000 (16:33 +0000)]
Fix a typo in AddAliasScopeMetadata

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216741 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoMake fabs safe to speculatively execute
Matt Arsenault [Fri, 29 Aug 2014 16:01:17 +0000 (16:01 +0000)]
Make fabs safe to speculatively execute

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216736 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoR600/SI: Use mad for fsub + fmul
Matt Arsenault [Fri, 29 Aug 2014 16:01:14 +0000 (16:01 +0000)]
R600/SI: Use mad for fsub + fmul

We can use a negate source modifier to match
this for fsub.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216735 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoAArch64: only try to get operand of a known node.
Tim Northover [Fri, 29 Aug 2014 15:34:58 +0000 (15:34 +0000)]
AArch64: only try to get operand of a known node.

A bug in r216725 meant we tried to discover the type of a SETCC before
confirming the node actually was a SETCC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216734 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoRemove unnecessary regex in test pattern per dblaikie suggestion.
Frederic Riss [Fri, 29 Aug 2014 15:32:15 +0000 (15:32 +0000)]
Remove unnecessary regex in test pattern per dblaikie suggestion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216733 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agotypo
Sanjay Patel [Fri, 29 Aug 2014 15:32:09 +0000 (15:32 +0000)]
typo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216732 91177308-0d34-0410-b5e6-96231b3b80d8

10 years ago[NVPTX] Make the alignment an explicit argument to ldu/ldg
Jingyue Wu [Fri, 29 Aug 2014 15:30:20 +0000 (15:30 +0000)]
[NVPTX] Make the alignment an explicit argument to ldu/ldg

Summary:
Instead of specifying the alignment as metadata which may be destroyed by
transformation passes, make the alignment the second argument to ldu/ldg
intrinsic calls.

Test Plan:
ldu-ldg.ll
ldu-i8.ll
ldu-reg-plus-offset.ll

Reviewers: eliben, meheff, jholewinski

Reviewed By: meheff, jholewinski

Subscribers: jholewinski, llvm-commits

Differential Revision: http://reviews.llvm.org/D5093

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216731 91177308-0d34-0410-b5e6-96231b3b80d8

10 years ago[ARM] Make Thumb-2 code size optimization test more strict.
Tilmann Scheller [Fri, 29 Aug 2014 15:13:35 +0000 (15:13 +0000)]
[ARM] Make Thumb-2 code size optimization test more strict.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216729 91177308-0d34-0410-b5e6-96231b3b80d8

10 years ago[ARM] Add a first test for the Thumb-2 code size optimization pass.
Tilmann Scheller [Fri, 29 Aug 2014 15:04:40 +0000 (15:04 +0000)]
[ARM] Add a first test for the Thumb-2 code size optimization pass.

While working on a Thumb-2 code size optimization I just realized that we don't have any regression tests for it.

So here's a first test case, I plan to increase the coverage over time.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216728 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoAArch64: skip select/setcc combine in complex case.
Tim Northover [Fri, 29 Aug 2014 13:05:18 +0000 (13:05 +0000)]
AArch64: skip select/setcc combine in complex case.

In an llvm-stress generated test, we were trying to create a v0iN type and
asserting when that failed. This case could probably be handled by the
function, but not without added complexity and the situation it arises in is
sufficiently odd that there's probably no benefit anyway.

Should fix PR20775.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216725 91177308-0d34-0410-b5e6-96231b3b80d8

10 years ago[AArch64] FPLoadBalancing: move ownership of the chain to its current accumulator...
Arnaud A. de Grandmaison [Fri, 29 Aug 2014 09:54:11 +0000 (09:54 +0000)]
[AArch64] FPLoadBalancing: move ownership of the chain to its current accumulator register

and forget about the previously used accumulator.

Coming up with a simple testcase is not easy, as this highly depends on
what the register allocator is doing: this issue showed up while working
with the PBQP allocator, which produced a different allocation scheme.
A testcase would need to come up with chain starting in D[0-7], then
moving to D[8-15], followed by a call to a function whose regmask
clobbers the starting accumulator in D[0-7], then another use of the chain.

Fixed some formatting, added some invariant checks while there.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216721 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoUse DwarfDebug::attachLowHighPC for the compilation unit DIE.
Frederic Riss [Fri, 29 Aug 2014 09:00:26 +0000 (09:00 +0000)]
Use DwarfDebug::attachLowHighPC for the compilation unit DIE.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216719 91177308-0d34-0410-b5e6-96231b3b80d8

10 years ago[SKX] Enable lowering of integer CMP operations.
Robert Khasanov [Fri, 29 Aug 2014 08:46:04 +0000 (08:46 +0000)]
[SKX] Enable lowering of integer CMP operations.
Added new types to Legalizer.
Fixed getSetCCResultType function
Added lowering tests.

Reviewed by Elena Demikhovsky.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216717 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoDo not assume the value passed to memset is an i32.
Job Noorman [Fri, 29 Aug 2014 08:23:53 +0000 (08:23 +0000)]
Do not assume the value passed to memset is an i32.

The code in SelectionDAG::getMemset for some reason assumes the value passed to
memset is an i32. This breaks the generated code for targets that only have
registers smaller than 32 bits because the value might get split into multiple
registers by the calling convention. See the test for the MSP430 target included
in the patch for an example.

This patch ensures that nothing is assumed about the type of the value. Instead,
the type is taken from the selected overload of the llvm.memset intrinsic.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216716 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoAdd conversion constructor to convert ArrayRef<T*> to ArrayRef<const T*>. Reviewed...
Craig Topper [Fri, 29 Aug 2014 06:01:43 +0000 (06:01 +0000)]
Add conversion constructor to convert ArrayRef<T*> to ArrayRef<const T*>. Reviewed with Chandler and David Blaikie.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216709 91177308-0d34-0410-b5e6-96231b3b80d8

10 years ago[AArch64] Fix some failures exposed by value type v4f16 and v8f16.
Jiangning Liu [Fri, 29 Aug 2014 01:31:42 +0000 (01:31 +0000)]
[AArch64] Fix some failures exposed by value type v4f16 and v8f16.

1) Add some missing bitcast patterns for v8f16.
2) Add type promotion for operand of ld/st operations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216706 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoCleaning up static initializers in Signals.inc
Chris Bieneman [Fri, 29 Aug 2014 01:05:16 +0000 (01:05 +0000)]
Cleaning up static initializers in Signals.inc

Reviewed by: Chandlerc

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216704 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoCleaning up static initializers in TimeValue.
Chris Bieneman [Fri, 29 Aug 2014 01:05:12 +0000 (01:05 +0000)]
Cleaning up static initializers in TimeValue.

Code reviewed by Chandlerc

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216703 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoIntroduce -DLLVM_USE_SANITIZER=Undefined CMake option to build UBSan-ified version...
Alexey Samsonov [Fri, 29 Aug 2014 00:50:36 +0000 (00:50 +0000)]
Introduce -DLLVM_USE_SANITIZER=Undefined CMake option to build UBSan-ified version of LLVM/Clang.

I've fixed most of the simple bugs and currently "check-llvm" test suite
has 26 failures, and "check-clang" suite has 5 failures.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216701 91177308-0d34-0410-b5e6-96231b3b80d8

10 years ago[FastISel][AArch64] Don't fold instructions that are not in the same basic block.
Juergen Ributzka [Fri, 29 Aug 2014 00:19:21 +0000 (00:19 +0000)]
[FastISel][AArch64] Don't fold instructions that are not in the same basic block.

This fix checks first if the instruction to be folded (e.g. sign-/zero-extend,
or shift) is in the same machine basic block as the instruction we are folding
into.

Not doing so can result in incorrect code, because the value might not be
live-out of the basic block, where the value is defined.

This fixes rdar://problem/18169495.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216700 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoRevert two GEP-related InstCombine commits
David Majnemer [Fri, 29 Aug 2014 00:06:43 +0000 (00:06 +0000)]
Revert two GEP-related InstCombine commits

This reverts commit r216523 and r216598; people have reported
regressions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216698 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoDon't promote byval pointer arguments when padding matters
Reid Kleckner [Thu, 28 Aug 2014 22:42:00 +0000 (22:42 +0000)]
Don't promote byval pointer arguments when padding matters

Don't promote byval pointer arguments when when their size in bits is
not equal to their alloc size in bits. This can happen for x86_fp80,
where the size in bits is 80 but the alloca size in bits in 128.
Promoting these types can break passing unions of x86_fp80s and other
types.

Patch by Thomas Jablin!

Reviewed By: rnk

Differential Revision: http://reviews.llvm.org/D5057

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216693 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoAArch64: More correctly constrain target vector extend lowering.
Jim Grosbach [Thu, 28 Aug 2014 22:08:28 +0000 (22:08 +0000)]
AArch64: More correctly constrain target vector extend lowering.

The AArch64 target lowering for [zs]ext of vectors is set up to handle
input simple types and expects the generic SDag path to do something reasonable
with anything that's not a simple type. The code, however, was only
checking that the result type was a simple type and assuming that
implied that the source type would also be a simple type. That's not a
valid assumption, as operations like "zext <1 x i1> %0 to <1 x i32>"
demonstrate. The fix is to simply explicitly validate the source type
as well as the result type.

PR20791

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216689 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoMove FNEG next to FABS and make them more similar, so it's easier that they can be...
Sanjay Patel [Thu, 28 Aug 2014 21:51:37 +0000 (21:51 +0000)]
Move FNEG next to FABS and make them more similar, so it's easier that they can be refactored. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216688 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoOn MachO, don't put non-private constants in mergeable sections.
Rafael Espindola [Thu, 28 Aug 2014 20:13:31 +0000 (20:13 +0000)]
On MachO, don't put non-private constants in mergeable sections.

On MachO, putting a symbol that doesn't start with a 'L' or 'l' in one of the
__TEXT,__literal* sections prevents the linker from merging the context of the
section.

Since private GVs are the ones the get mangled to start with 'L' or 'l', we now
only put those on the __TEXT,__literal* sections.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216682 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoConstify MCSymbol* parameters to DwarfDebug::attachLowHighPC.
Frederic Riss [Thu, 28 Aug 2014 19:09:29 +0000 (19:09 +0000)]
Constify MCSymbol* parameters to DwarfDebug::attachLowHighPC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216681 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoFix a logic bug in x86 vector codegen: sext (zext (x) ) != sext (x) (PR20472).
Sanjay Patel [Thu, 28 Aug 2014 18:59:22 +0000 (18:59 +0000)]
Fix a logic bug in x86 vector codegen: sext (zext (x) ) != sext (x) (PR20472).

Remove a block of code from LowerSIGN_EXTEND_INREG() that was added with:
http://llvm.org/viewvc/llvm-project?view=revision&revision=177421

And caused:
http://llvm.org/bugs/show_bug.cgi?id=20472 (more analysis here)
http://llvm.org/bugs/show_bug.cgi?id=18054

The testcases confirm that we (1) don't remove a zext op that is necessary and (2) generate
a pmovz instead of punpck if SSE4.1 is available. Although pmovz is 1 byte longer, it allows
folding of the load, and so saves 3 bytes overall.

Differential Revision: http://reviews.llvm.org/D4909

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216679 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoDo not introduce new shuffle patterns after operation legalization if SHUFFLE_VECTOR
Owen Anderson [Thu, 28 Aug 2014 17:49:58 +0000 (17:49 +0000)]
Do not introduce new shuffle patterns after operation legalization if SHUFFLE_VECTOR
was marked custom.  The target independent DAG combine has no way to know if
the shuffles it is introducing are ones that the target could support or not.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216678 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoJanitorial services: "Don’t duplicate function or class name at the beginning of...
Sanjay Patel [Thu, 28 Aug 2014 16:29:51 +0000 (16:29 +0000)]
Janitorial services: "Don’t duplicate function or class name at the beginning of the comment."

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216674 91177308-0d34-0410-b5e6-96231b3b80d8

10 years agoRemove local TLI vars that are just duplicates of the class var. No functional change.
Sanjay Patel [Thu, 28 Aug 2014 16:01:50 +0000 (16:01 +0000)]
Remove local TLI vars that are just duplicates of the class var. No functional change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216673 91177308-0d34-0410-b5e6-96231b3b80d8