Summary:
Simplify emitDirectiveModuleFP() by having it just print the current information
from MipsABIFlagsSection and doing an updateABIInfo() before such calls.
This prevents us from forgetting to update the STI.FeatureBits,
because updateABIInfo() uses those to update the MipsABIFlagsSection object,
and also makes sure we use the update mechanism from MipsABIFlagsSection.
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: llvm-commits, mpf
Differential Revision: http://reviews.llvm.org/D10642
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240637 91177308-0d34-0410-b5e6-96231b3b80d8
As pointed out by Justin Bogner (see r240520), SystemZDAGToDAGISel::Select
currently attempts to convert boolean operations into RxSBG even on some
non-integer types (in particular, vector types). This would not work in
any case, and it happened to trigger undefined behaviour in allOnes.
This patch verifies that we have a (<= 64-bit) integer type before
attempting to perform this optimization.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240634 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
We can simplify emitDirectiveModuleOddSPReg() by having it print the current OddSPReg information
from MipsABIFlagsSection and doing an updateABIInfo() before such calls.
This prevents us from forgetting to update the STI.FeatureBits, because updateABIInfo() uses those to update the MipsABIFlagsSection object,
and also makes sure we use the update mechanism from MipsABIFlagsSection.
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: llvm-commits, mpf
Differential Revision: http://reviews.llvm.org/D10641
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240630 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
This is the LLVM part of the PPC memory sanitizer implementation in
D10648.
Reviewers: kcc, samsonov, willschm, wschmidt, eugenis
Reviewed By: eugenis
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D10649
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240627 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
In an expression such as "(((a+b)+c)+d)", parseParenExpression() would only parse the "a+b)+c", which would result in an error later on in the parser.
This means that we can only parse one level of inner parentheses.
In order to fix this, I added a new function called parseParenExprOfDepth(), which parses a specified number of trailing parenthesis expressions
(except for the outermost parenthesis), and changed MipsAsmParser to use it in parseMemOffset instead of parseParenExpression().
Reviewers: dsanders, rafael
Reviewed By: dsanders, rafael
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D9742
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240625 91177308-0d34-0410-b5e6-96231b3b80d8
We don't always have FMA, for example when using 'clang -mavx512f'
without an explicit CPU.
Also check for an explicit +avx512f instead of CPUs in a couple
related tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240616 91177308-0d34-0410-b5e6-96231b3b80d8
Summary
This change turns on the emission of
__LLVM_Stackmaps section when generating COFF binaries.
Test Plan
Added a scenario to the test case:
test\CodeGen\X86\statepoint-stackmap-format.ll.
Code Review:
http://reviews.llvm.org/D10680
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240613 91177308-0d34-0410-b5e6-96231b3b80d8
r240214 fixed some UB in IndVarSimplify, and it needed a temporary
`WeakVH` to do it. Add `simplify_type<const WeakVH>` so that this
temporary isn't necessary.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240599 91177308-0d34-0410-b5e6-96231b3b80d8
- Deciding that insn->sibIndex is SIB_INDEX_NONE does not require another
check beyond the fully decoded bits being equal to 0x4.
The expression insn->sibIndex == SIB_INDEX_sib could not have been true unless
index were 0x4, because SIB_INDEX_sib is merely the range base (SIB_INDEX_EAX)
plus 4. Respectively SIB_INDEX_sib64.
- Don't use a switch statement to perform left-shift.
Differential Revision: http://reviews.llvm.org/D9762
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240598 91177308-0d34-0410-b5e6-96231b3b80d8
We performed a simple, but incomplete, intersection when it came time to
CSE instructions. It didn't handle, for example, the 'exact' flag.
This fixes PR23922.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240595 91177308-0d34-0410-b5e6-96231b3b80d8
Reassociate mutated existing instructions in order to form negations
which would create additional reassociate opportunities.
This fixes PR23926.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240593 91177308-0d34-0410-b5e6-96231b3b80d8
This commit makes changes to IfConverter::AnalyzeBlock to use iteration instead
of recursion. Previously, this function would get called recursively a large
number of times and eventually segfault when a function with the following CFG
was compiled:
BB0:
if (condition0)
goto BB1
goto BB2
BB1:
goto BB2
BB2:
if (condition1)
goto BB3
goto BB4
BB3:
...
(repeat until BB7488)
rdar://problem/21386145
Differential Revision: http://reviews.llvm.org/D10587
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240589 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
This patch first change the register that holds local address for stack
frame to %SPL. Then the new NVPTXPeephole pass will try to scan the
following pattern
%vreg0<def> = LEA_ADDRi64 <fi#0>, 4
%vreg1<def> = cvta_to_local %vreg0
and transform it into
%vreg1<def> = LEA_ADDRi64 %VRFrameLocal, 4
Patched by Xuetian Weng
Test Plan: test/CodeGen/NVPTX/local-stack-frame.ll
Reviewers: jholewinski, jingyue
Reviewed By: jingyue
Subscribers: eliben, jholewinski, llvm-commits
Differential Revision: http://reviews.llvm.org/D10549
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240587 91177308-0d34-0410-b5e6-96231b3b80d8
On ELF that was already the case since getting the size of a symbol
never fails.
On MachO and COFF we could fail trying to get the section of a symbol. But
we don't really need the section, just the section number to know if two
symbols are in the same section or not.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240580 91177308-0d34-0410-b5e6-96231b3b80d8
This commit serializes the 3 scalar boolean attributes from the
MachineRegisterInfo class: IsSSA, TracksRegLiveness, and
TracksSubRegLiveness. These attributes are serialized as part
of the machine function YAML mapping.
Reviewers: Duncan P. N. Exon Smith
Differential Revision: http://reviews.llvm.org/D10618
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240579 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Because LSR happens at a late stage where mul of a power of 2 is
typically canonicalized to shl, this canonicalization emits code that
can be better CSE'ed.
Test Plan:
Transforms/LoopStrengthReduce/shl.ll shows how this change makes GVN more
powerful. Fixes some existing tests due to this change.
Reviewers: sanjoy, majnemer, atrick
Reviewed By: majnemer, atrick
Subscribers: majnemer, llvm-commits
Differential Revision: http://reviews.llvm.org/D10448
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240573 91177308-0d34-0410-b5e6-96231b3b80d8
This returns either the symbol offset or address. Since it is not defined which
one, it never has to lookup the section and so never fails.
I will add users in the next commit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240569 91177308-0d34-0410-b5e6-96231b3b80d8
This is part of the work to devirtualize Value.
The old pattern was to call replaceUsesOfWithOnConstant which was overridden by
subclasses. Those could then call replaceUsesOfWithOnConstantImpl on Constant
to handle deleting the current value.
To be consistent with other parts of the code, this has been changed so that we
call the method on Constant, and that dispatches to an Impl on subclasses.
As part of this, it made sense to rename the methods to be more descriptive. The
new name is Constant::handleOperandChange, and it requires that all subclasses of
Constant implement handleOperandChangeImpl, even if they just throw an error if
they shouldn't be called.
Reviewed by Duncan Exon Smith.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240567 91177308-0d34-0410-b5e6-96231b3b80d8
Stop taking a `dwarf::Form` in `DIEValue::EmitValue()` and
`DIEValue::SizeOf()`, since they're always passed `DIEValue::getForm()`
anyway. This is just left over from when `DIEValue` didn't know its own
form.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240566 91177308-0d34-0410-b5e6-96231b3b80d8
We ought to also emit unmangled references to dllimported functions,
but no existing linker needs this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240562 91177308-0d34-0410-b5e6-96231b3b80d8
CaptureTracking becomes very expensive in large basic blocks while
calling PointerMayBeCaptured. PointerMayBeCaptured scans the BB the
number of times equal to the number of uses of 'BeforeHere', which is
currently capped at 20 and bails out with Tracker->tooManyUses().
The bottleneck here is the number of calls to PointerMayBeCaptured * the
basic block scan. In a testcase with a 82k instruction BB,
PointerMayBeCaptured is called 130k times, leading to 'shouldExplore'
taking 527k runs, this currently takes ~12min.
To fix this we locally (within PointerMayBeCaptured) number the
instructions in the basic block using a DenseMap to cache instruction
positions/numbers. We build the cache incrementally every time we need
to scan an unexplored part of the BB, improving compile time to only
take ~2min.
This triggers in the flow: DeadStoreElimination -> MepDepAnalysis ->
CaptureTracking.
Side note: after multiple runs in the test-suite I've seen no
performance nor compile time regressions, but could note a couple of
compile time improvements:
Performance Improvements - Compile Time Delta Previous Current StdDev
SingleSource/Benchmarks/Misc-C++/bigfib -4.48% 0.8547 0.8164 0.0022
MultiSource/Benchmarks/TSVC/LoopRerolling-dbl/LoopRerolling-dbl -1.47% 1.3912 1.3707 0.0056
Differential Revision: http://reviews.llvm.org/D7010
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240560 91177308-0d34-0410-b5e6-96231b3b80d8
This commit serializes the null register machine operands.
It uses the '_' keyword to represent them, but the parser
also allows the '%noreg' named register syntax.
Reviewers: Duncan P. N. Exon Smith
Differential Revision: http://reviews.llvm.org/D10580
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240558 91177308-0d34-0410-b5e6-96231b3b80d8
With option OptForSize enabled, the Loop Vectorizer is not supposed to
create tail loop. The condition checking that was invalid and was not
matching to the comment above.
Patch by Marianne Mailhot-Sarrasin.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240556 91177308-0d34-0410-b5e6-96231b3b80d8
This commit merges the #ifdef and #ifndef checks into one #if, as
suggested by Duncan P. N. Exon Smith.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240553 91177308-0d34-0410-b5e6-96231b3b80d8
It is perfectly possible for SHNDX to contain indexes that have the same value
as reserved st_shndx values.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240544 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
This patch fixes PR23405 (https://llvm.org/bugs/show_bug.cgi?id=23405).
During a node unscheduling an entry in LiveRegGens can be replaced with a new value. That corrupts the live reg tracking and LiveReg* structure is not cleared as should be during unscheduling. Problematic condition that enforces Gen replacement is `I->getSUnit()->getHeight() < LiveRegGens[I->getReg()]->getHeight()`. This condition should be checked only if LiveRegGen was set in current node unscheduling.
Test Plan: Regression test included.
Reviewers: hfinkel, atrick
Reviewed By: atrick
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D9993
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240538 91177308-0d34-0410-b5e6-96231b3b80d8
COFF and MachO only define symbol sizes for common symbols. Reflect that
in the class hierarchy by having a method for common symbols only in the base
and a general one in ELF.
This avoids the need of using a magic value for the size, which had a few
problems
* Most callers didn't check for it.
* The ones that did could not tell the magic value from a file actually having
that value.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240529 91177308-0d34-0410-b5e6-96231b3b80d8
While often you want to use something specialized like StringMap, when
the strings already have persistent storage a normal densemap over them
can be more efficient.
This can't go into StringRef.h because of really obnoxious header chains
from the hashing code to the endian detection code to CPU feature
detection code to StringMap.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240528 91177308-0d34-0410-b5e6-96231b3b80d8
This stops shifting a 32-bit value by such absurd amounts as 96 and
120. We do this by dropping a call to the function that was doing this
entirely, which rather surprisingly doesn't break *any* tests.
I've also added an assert in the misbehaving function to prove that
it's no longer being called with completely invalid arguments.
This change looks pretty bogus and we should probably be reverting
r238692 instead, but this is hard to do with the number of follow ups
that have happened since. It can't be any worse than the undefined
behaviour that was happening before though.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240526 91177308-0d34-0410-b5e6-96231b3b80d8
