Summary: As a follow-up to rL255054 I wasn't able to convince myself that the code did what I thought, so I wrote more tests.
Reviewers: reames
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D15371
llvm-svn: 255295
PR25763 demonstrated an issue with D14683 - vector comparison constant folding only works for i1 results, so we need to split off the sign-extension of the result to the required type. Luckily this can be done with the existing type legalization code.
llvm-svn: 255289
Avoid O(N^2) behaviour when checking for bad bitcasts in `ConstantExpr`s
buried inside of aggregate initializers to `GlobalVariable`s. I've:
- centralized the "visited" set for recursing through `ConstantExpr`s so
that expressions are only visited once per Verifier run,
- removed the duplicate logic for the stack visit, and
- avoided recursing into other `GlobalValue`s.
This recovers roughly a 100x time difference in clang compiles of a
particular input file (filled with large cross-referencing tables) that
depends on whether `-disable-llvm-verifier` is on. This slowdown was
caused by r187506, which introduced these checks.
Now, avoiding `-disable-llvm-verifier` only causes a 2x slowdown for
this case.
(Interestingly, dumping the textual IR for this file starts at least
50GB of global variable initializers (I don't know the total, since I
killed the dump)...)
llvm-svn: 255269
Summary:
Adds support for in-memory round-trip of sample profile data along with basic
round trip unit tests. This will also make it easier to include unit tests for
future changes to sample profiling.
Reviewers: davidxl, dnovillo, silvas
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D15211
llvm-svn: 255264
This is a redo of r255137 (reverted at r255227) which was a redo of
r255124 (reverted at r255126) with a fixed check for a scalar source
type and an added test for the failure that caused the revert.
Original commit message:
Example:
bitcast (extractelement (bitcast <2 x float> %X to <2 x i32>), 1) to float
--->
extractelement <2 x float> %X, i32 1
This is part of fixing PR25543:
https://llvm.org/bugs/show_bug.cgi?id=25543
The next step will be to generalize this fold:
trunc ( lshr ( bitcast X) ) -> extractelement (X)
Ie, I'm hoping to replace the existing transform of:
bitcast ( trunc ( lshr ( bitcast X)))
added by:
http://reviews.llvm.org/rL112232
with 2 less specific transforms to catch the case in the bug report.
Differential Revision: http://reviews.llvm.org/D14879
llvm-svn: 255261
Added some missing spaces between the module identifier and the start of
the debug message. Also added a ":" after the module identifier to make
this look a little nicer.
llvm-svn: 255259
Ensure we release the files even when they don't hold a function index
summary section, by restructuring the control flow a little bit.
llvm-svn: 255256
A linker normally has two stages: symbol resolution and "moving stuff".
In lib/Linker there is the complication of lazy linking some globals,
but it was still far more mixed than it needed to.
This splits the linker into a lower level IRMover and the linker proper.
The IRMover just takes a list of globals to move and a callback that
lets the user control what is lazy linked.
The main motivation is that now tools/gold (and soon lld) can use their
own symbol resolution to instruct IRMover what to do.
llvm-svn: 255254
We extend the search for redundant stores to predecessor blocks that
unconditionally lead to the block BB with the current store instruction. That
also includes single-block loops that unconditionally lead to BB, and
if-then-else blocks where then- and else-blocks unconditionally lead to BB.
http://reviews.llvm.org/D13363
Patch by Ivan Baev <ibaev@codeaurora.org>!
llvm-svn: 255247
This patch corresponds to review:
http://reviews.llvm.org/D15286
LLVM IR frequently contains bitcast operations between floating point and
integer values of the same width. Doing this through memory operations is
quite expensive on PPC. This patch allows the use of direct register moves
between FPRs and GPRs for lowering bitcasts.
llvm-svn: 255246
Introduced DIMacro and DIMacroFile debug info metadata in the LLVM IR to support macros.
Differential Revision: http://reviews.llvm.org/D14687
llvm-svn: 255245
Summary:
LAA uses the PredicatedScalarEvolution interface, so it can produce
forward/backward dependences having SCEVs that are AddRecExprs only after being
transformed by PredicatedScalarEvolution.
Use PredicatedScalarEvolution to get the expected expressions.
Reviewers: anemet
Subscribers: llvm-commits, sanjoy
Differential Revision: http://reviews.llvm.org/D15382
llvm-svn: 255241
SystemZ needs to do its scheduling after branch relaxation, which can
only happen after block placement, and therefore the standard
PostRAScheduler point in the pass sequence is too early.
TargetMachine::targetSchedulesPostRAScheduling() is a new method that
signals on returning true that target will insert the final scheduling
pass on its own.
Reviewed by Hal Finkel
llvm-svn: 255234
- This simplifies the CallSite class, arg_begin / arg_end are now
simple wrapper getters.
- In several places, we were creating CallSite instances solely to call
arg_begin and arg_end. With this change, that's no longer required.
llvm-svn: 255226
Patch turns on OpenMP support in clang by default after fixing OpenMP buildbots.
Differential Revision: http://reviews.llvm.org/D13802
llvm-svn: 255222
ISD::FCOPYSIGN permits its operands to have differing types, and DAGCombiner
uses this. Add some def : Pat rules to expand this out into an explicit
conversion and a normal copysign operation.
llvm-svn: 255220
Summary:
This allows us to remove the END_OF_TEXT_LABEL hack we had been using
and simplifies the fixups used to compute the address of constant
arrays.
Reviewers: arsenm
Subscribers: arsenm, llvm-commits
Differential Revision: http://reviews.llvm.org/D15257
llvm-svn: 255204
Detecting additional dead-defs without a dead flag that are only visible
through liveness information should be part of the register operand
collection not intertwined with the register pressure update logic.
llvm-svn: 255192
Target-specific instructions may have uninteresting physreg clobbers,
for target-specific reasons. The peephole pass doesn't need to concern
itself with such defs, as long as they're implicit and marked as dead.
llvm-svn: 255182
without a frame pointer when unwind may happen.
This is a workaround for a bug in the way we emit the CFI directives for
frameless unwind information. See PR25614.
llvm-svn: 255175
Two tests diag_mismatch.ll and diag_no_funcprofdata.ll generates the same
profdata filename which can conflict in current test runs. This patch
renames them to have different names.
llvm-svn: 255158
The ConstantDataArray::getFP(LLVMContext &, ArrayRef<uint16_t>)
overload has had a typo in it since it was written, where it will
create a Vector instead of an Array. This obviously doesn't work at
all, but it turns out that until r254991 there weren't actually any
callers of this overload. Fix the typo and add some test coverage.
llvm-svn: 255157
