oota-llvm.git
6 years ago[IR] Add support for floating pointer atomic loads and stores
Philip Reames [Wed, 16 Dec 2015 00:49:36 +0000 (00:49 +0000)]
[IR] Add support for floating pointer atomic loads and stores

This patch allows atomic loads and stores of floating point to be specified in the IR and adds an adapter to allow them to be lowered via existing backend support for bitcast-to-equivalent-integer idiom.

Previously, the only way to specify a atomic float operation was to bitcast the pointer to a i32, load the value as an i32, then bitcast to a float. At it's most basic, this patch simply moves this expansion step to the point we start lowering to the backend.

This patch does not add canonicalization rules to convert the bitcast idioms to the appropriate atomic loads. I plan to do that in the future, but for now, let's simply add the support. I'd like to get instruction selection working through at least one backend (x86-64) without the bitcast conversion before canonicalizing into this form.

Similarly, I haven't yet added the target hooks to opt out of the lowering step I added to AtomicExpand. I figured it would more sense to add those once at least one backend (x86) was ready to actually opt out.

As you can see from the included tests, the generated code quality is not great. I plan on submitting some patches to fix this, but help from others along that line would be very welcome. I'm not super familiar with the backend and my ramp up time may be material.

Differential Revision: http://reviews.llvm.org/D15471

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255737 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[sancov] blacklist support.
Mike Aizatsky [Wed, 16 Dec 2015 00:31:48 +0000 (00:31 +0000)]
[sancov] blacklist support.

Summary:
Using the blacklist the user can filter own unwanted functions
from all outputs. By default blacklist contains "fun:__sancov*" line.

Differential Revision: http://reviews.llvm.org/D15364

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255732 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoFix typo in r255720
Justin Bogner [Wed, 16 Dec 2015 00:17:34 +0000 (00:17 +0000)]
Fix typo in r255720

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255724 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoTest commit: fixed spelling error in comment.
Wolfgang Pieb [Wed, 16 Dec 2015 00:08:18 +0000 (00:08 +0000)]
Test commit: fixed spelling error in comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255721 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoLPM: Simplify how passes mark loops for deletion. NFC
Justin Bogner [Wed, 16 Dec 2015 00:01:02 +0000 (00:01 +0000)]
LPM: Simplify how passes mark loops for deletion. NFC

When a pass removes a loop it currently has to reach up into the
LPPassManager's internals to update the state of the iteration over
loops. This reverse dependency results in a pretty awkward interplay
of the LPPassManager and its Passes.

Here, we change this to instead keep track of when a loop has become
"unlooped" in the Loop objects themselves, then the LPPassManager can
check this and manipulate its own state directly. This opens the door
to allow most of the loop passes to work without a backreference to
the LPPassManager.

I've kept passes calling the LPPassManager::deleteLoopFromQueue API
now so I could put an assert in to prove that this is NFC, but a later
pass will update passes just to preserve the LoopInfo directly and
stop referencing the LPPassManager completely.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255720 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoRemove one of the void casts used to suppress unused variable warning.
Richard Trieu [Tue, 15 Dec 2015 23:47:17 +0000 (23:47 +0000)]
Remove one of the void casts used to suppress unused variable warning.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255709 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoUn-XFAIL JIT EH tests under [am]san.
Peter Collingbourne [Tue, 15 Dec 2015 23:46:21 +0000 (23:46 +0000)]
Un-XFAIL JIT EH tests under [am]san.

These tests started passing after libcxxabi's r255559, which fixed a problem
relating to how libcxxabi links its EH library. The test failures were
caused by an issue with libc++, not the sanitizers (confirmed by building a
pre-r255559 revision with libc++/libc++abi and without sanitizers), so they
should never have been XFAILed under the sanitizers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255708 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[WinEH] Make llvm.x86.seh.recoverfp work on x64
Reid Kleckner [Tue, 15 Dec 2015 23:40:58 +0000 (23:40 +0000)]
[WinEH] Make llvm.x86.seh.recoverfp work on x64

It adjusts from RSP-after-prologue to RBP, which is what SEH filters
need to do before they can use llvm.localrecover.

Fixes SEH filter captures, which were broken in r250088.

Issue reported by Alex Crichton.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255707 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoSuppress unused variable warning in the no-asserts build.
Evgeniy Stepanov [Tue, 15 Dec 2015 23:30:29 +0000 (23:30 +0000)]
Suppress unused variable warning in the no-asserts build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255706 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoCast variable to void to resolve unused variable warning in non-asserts builds.
Richard Trieu [Tue, 15 Dec 2015 23:25:34 +0000 (23:25 +0000)]
Cast variable to void to resolve unused variable warning in non-asserts builds.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255704 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoFix "Not having LAHF/SAHF" assert.
Hans Wennborg [Tue, 15 Dec 2015 23:21:46 +0000 (23:21 +0000)]
Fix "Not having LAHF/SAHF" assert.

It wants to assert that the subtarget is 64-bit, not the register.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255703 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAMDGPU/SI: Set the code object work group segment size when targeting HSA
Tom Stellard [Tue, 15 Dec 2015 23:15:25 +0000 (23:15 +0000)]
AMDGPU/SI: Set the code object work group segment size when targeting HSA

Reviewers: arsenm

Subscribers: arsenm, llvm-commits

Differential Revision: http://reviews.llvm.org/D15493

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255702 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[llvm-objdump/MachODump] Shrink code a little bit. NFC.
Davide Italiano [Tue, 15 Dec 2015 23:14:21 +0000 (23:14 +0000)]
[llvm-objdump/MachODump] Shrink code a little bit. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255701 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[x86] inline calls to fmaxf / llvm.maxnum.f32 using maxss (PR24475)
Sanjay Patel [Tue, 15 Dec 2015 23:11:43 +0000 (23:11 +0000)]
[x86] inline calls to fmaxf / llvm.maxnum.f32 using maxss (PR24475)

This patch improves on the suggested codegen from PR24475:
https://llvm.org/bugs/show_bug.cgi?id=24475

but only for the fmaxf() case to start, so we can sort out any bugs before
extending to fmin, f64, and vectors.

The fmax / maxnum definitions provide us flexibility for signed zeros, so the
only thing we have to worry about in this replacement sequence is NaN handling.

Note 1: It may be better to implement this as lowerFMAXNUM(), but that exposes
a problem: SelectionDAGBuilder::visitSelect() transforms compare/select
instructions into FMAXNUM nodes if we declare FMAXNUM legal or custom. Perhaps
that should be checking for NaN inputs or global unsafe-math before transforming?
As it stands, that bypasses a big set of optimizations that the x86 backend
already has in PerformSELECTCombine().

Note 2: The v2f32 test reveals another bug; the vector is extended to v4f32, so
we have completely unnecessary operations happening on undef elements of the
vector.

Differential Revision: http://reviews.llvm.org/D15294

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255700 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[Sparc] Tweak r255668: Use llvm_unreachable.
James Y Knight [Tue, 15 Dec 2015 23:07:16 +0000 (23:07 +0000)]
[Sparc] Tweak r255668: Use llvm_unreachable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255698 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoCross-DSO control flow integrity (LLVM part).
Evgeniy Stepanov [Tue, 15 Dec 2015 23:00:08 +0000 (23:00 +0000)]
Cross-DSO control flow integrity (LLVM part).

An LTO pass that generates a __cfi_check() function that validates a
call based on a hash of the call-site-known type and the target
pointer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255693 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAMDGPU/SI: Set the code objects private segment size when targeting HSA.
Tom Stellard [Tue, 15 Dec 2015 22:55:30 +0000 (22:55 +0000)]
AMDGPU/SI: Set the code objects private segment size when targeting HSA.

Summary: I'm not sure how things worked before without this.

Reviewers: arsenm

Subscribers: arsenm, llvm-commits

Differential Revision: http://reviews.llvm.org/D15492

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255692 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[LoopVectorizer] Refine loop vectorizer's register usage calculator by ignoring speci...
Cong Hou [Tue, 15 Dec 2015 22:45:09 +0000 (22:45 +0000)]
[LoopVectorizer] Refine loop vectorizer's register usage calculator by ignoring specific instructions.

(This is the third attempt to check in this patch, and the first two are r255454
and r255460. The once failed test file reg-usage.ll is now moved to
test/Transform/LoopVectorize/X86 directory with target datalayout and target
triple indicated.)

LoopVectorizationCostModel::calculateRegisterUsage() is used to estimate the
register usage for specific VFs. However, it takes into account many
instructions that won't be vectorized, such as induction variables,
GetElementPtr instruction, etc.. This makes the loop vectorizer too conservative
when choosing VF. In this patch, the induction variables that won't be
vectorized plus GetElementPtr instruction will be added to ValuesToIgnore set
so that their register usage won't be considered any more.

Differential revision: http://reviews.llvm.org/D15177

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255691 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAMDGPU/SI: Emit constant variables in the .hsatext section when targeting HSA
Tom Stellard [Tue, 15 Dec 2015 22:39:36 +0000 (22:39 +0000)]
AMDGPU/SI: Emit constant variables in the .hsatext section when targeting HSA

Reviewers: arsenm

Subscribers: arsenm, llvm-commits

Differential Revision: http://reviews.llvm.org/D15426

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255689 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoWrap include of <future> in some warning suppression pragmas
Reid Kleckner [Tue, 15 Dec 2015 22:10:30 +0000 (22:10 +0000)]
Wrap include of <future> in some warning suppression pragmas

Eventually we may need to sink this include to the .cpp file or
something to suport LLVM_ENABLE_THREADS=OFF, but this solves my
immediate problem of fixing the build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255682 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[WebAssembly] Implement instruction selection for constant offsets in addresses.
Dan Gohman [Tue, 15 Dec 2015 22:01:29 +0000 (22:01 +0000)]
[WebAssembly] Implement instruction selection for constant offsets in addresses.

Add instruction patterns for matching load and store instructions with constant
offsets in addresses. The code is fairly redundant due to the need to replicate
everything between imm, tglobaldadr, and texternalsym, but this appears to be
common tablegen practice. The main alternative appears to be to introduce
matching functions with C++ code, but sticking with purely generated matchers
seems better for now.

Also note that this doesn't yet support offsets from getelementptr, which will
be the most common case; that will depend on a change in target-independent code
in order to set the NoUnsignedWrap flag, which I'll submit separately. Until
then, the testcase uses ptrtoint+add+inttoptr with a nuw on the add.

Also implement isLegalAddressingMode with an approximation of this.

Differential Revision: http://reviews.llvm.org/D15538

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255681 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoInitialize all bytes in vp data (msan error)
Xinliang David Li [Tue, 15 Dec 2015 21:57:08 +0000 (21:57 +0000)]
Initialize all bytes in vp data (msan error)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255680 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAdd support for the .debug_macro section of the forthcoming DWARF 5 spec.
Eric Christopher [Tue, 15 Dec 2015 21:50:27 +0000 (21:50 +0000)]
Add support for the .debug_macro section of the forthcoming DWARF 5 spec.

Patch by B. Sivachandra Reddy!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255679 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoFix clang-cl self-host with MSVC 2013 STL std::bind implementation
Reid Kleckner [Tue, 15 Dec 2015 21:41:58 +0000 (21:41 +0000)]
Fix clang-cl self-host with MSVC 2013 STL std::bind implementation

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255678 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[WinEH] Remove unused intrinsic llvm.x86.seh.restoreframe
Reid Kleckner [Tue, 15 Dec 2015 21:41:34 +0000 (21:41 +0000)]
[WinEH] Remove unused intrinsic llvm.x86.seh.restoreframe

We can clean this up now that we have the X86 CATCHRET instruction to
restore the FP, SP, and BP.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255677 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[WinEH] Use operand bundles to describe call sites
David Majnemer [Tue, 15 Dec 2015 21:27:27 +0000 (21:27 +0000)]
[WinEH] Use operand bundles to describe call sites

SimplifyCFG allows tail merging with code which terminates in
unreachable which, in turn, makes it possible for an invoke to end up in
a funclet which it was not originally part of.

Using operand bundles on invokes allows us to determine whether or not
an invoke was part of a funclet in the source program.

Furthermore, it allows us to unambiguously answer questions about the
legality of inlining into call sites which the personality may have
trouble with.

Differential Revision: http://reviews.llvm.org/D15517

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255674 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoTest cleanup -- remove duplicate run lines
Xinliang David Li [Tue, 15 Dec 2015 21:15:06 +0000 (21:15 +0000)]
Test cleanup -- remove duplicate run lines

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255673 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAMDGPU/SI: Select constant loads with non-uniform addresses to MUBUF instructions
Tom Stellard [Tue, 15 Dec 2015 20:55:55 +0000 (20:55 +0000)]
AMDGPU/SI: Select constant loads with non-uniform addresses to MUBUF instructions

Summary:
We were previously selecting all constant loads to SMRD instructions and legalizing
the SMRDs with non-uniform addresses during the SIFixSGPRCopesPass.

This new solution is more simple and also generates much better code, because
the instruction selector is able to take advantage of all the MUBUF addressing
modes that are legalization pass wasn't able to.

We also no longer need to generate v_add_* instructions when we
have a uniform pointer and a non-uniform offset, as this is now folded into the
MUBUF instruction during instruction selection.

Reviewers: arsenm

Subscribers: arsenm, llvm-commits

Differential Revision: http://reviews.llvm.org/D15425

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255672 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoLLVM tutorial: fix broken links/anchors
Alex Denisov [Tue, 15 Dec 2015 20:50:29 +0000 (20:50 +0000)]
LLVM tutorial: fix broken links/anchors

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255671 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoCoverage code refactoring /NFC
Xinliang David Li [Tue, 15 Dec 2015 19:44:45 +0000 (19:44 +0000)]
Coverage code refactoring /NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255670 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoLPM: Stop threading `Pass *` through all of the loop utility APIs. NFC
Justin Bogner [Tue, 15 Dec 2015 19:40:57 +0000 (19:40 +0000)]
LPM: Stop threading `Pass *` through all of the loop utility APIs. NFC

A large number of loop utility functions take a `Pass *` and reach
into it to find out which analyses to preserve. There are a number of
problems with this:

- The APIs have access to pretty well any Pass state they want, so
  it's hard to tell what they may or may not do.

- Other APIs have copied these and pass around a `Pass *` even though
  they don't even use it. Some of these just hand a nullptr to the API
  since the callers don't even have a pass available.

- Passes in the new pass manager don't work like the current ones, so
  the APIs can't be used as is there.

Instead, we should explicitly thread the analysis results that we
actually care about through these APIs. This is both simpler and more
reusable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255669 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[Sparc] Fix handling of double incoming arguments on sparc little-endian.
James Y Knight [Tue, 15 Dec 2015 19:23:12 +0000 (19:23 +0000)]
[Sparc] Fix handling of double incoming arguments on sparc little-endian.

On SparcV8, doubles get passed in two 32-bit integer registers. The call
code was already handling endianness correctly, but the incoming
argument code was not -- it got the two halves in opposite order.

Also remove some dead code in LowerFormalArguments_32 to handle
less-than-32bit values, which can't actually happen.

Finally, add some test cases for the 32-bit calling convention, cribbed
from the 64abi.ll test, and run for both big and little-endian.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255668 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[Docs] Fix Unexpected indentation errors.
Akira Hatanaka [Tue, 15 Dec 2015 19:11:48 +0000 (19:11 +0000)]
[Docs] Fix Unexpected indentation errors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255665 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[X86] MOVPC32r should only emit CFI adjustments when needed
Michael Kuperstein [Tue, 15 Dec 2015 18:50:32 +0000 (18:50 +0000)]
[X86] MOVPC32r should only emit CFI adjustments when needed

We only want to emit CFI adjustments when actually using DWARF.
This fixes PR25828.

Differential Revision: http://reviews.llvm.org/D15522

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255664 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAMDGPU/SI: Implement AMDGPUTargetTransformInfo::isSourceOfDivergence()
Tom Stellard [Tue, 15 Dec 2015 18:04:38 +0000 (18:04 +0000)]
AMDGPU/SI: Implement AMDGPUTargetTransformInfo::isSourceOfDivergence()

Reviewers: arsenm

Subscribers: arsenm, llvm-commits

Differential Revision: http://reviews.llvm.org/D15476

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255661 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[SimplifyCFG] allow speculation of exactly one expensive instruction (PR24818)
Sanjay Patel [Tue, 15 Dec 2015 17:38:29 +0000 (17:38 +0000)]
[SimplifyCFG] allow speculation of exactly one expensive instruction (PR24818)

This is the last general step to allow more IR-level speculation with a safety harness in place in CodeGenPrepare.

The intent is to restore the behavior enabled by:
http://reviews.llvm.org/rL228826

but prevent bad performance such as:
https://llvm.org/bugs/show_bug.cgi?id=24818

Earlier patches in this sequence:
D12882 (disable SimplifyCFG speculation for expensive instructions)
D13297 (have CGP despeculate expensive ops)
D14630 (have CGP despeculate special versions of cttz/ctlz)

As shown in the test cases, we only have two instructions currently affected: ctz for some x86 and fdiv generally.
Allowing exactly one expensive instruction is a bit of a hack, but it lines up with what is currently implemented
in CGP. If we make the despeculation more general in CGP, we can make the speculation here more liberal.

A follow-up patch will adjust the cost for sqrt and possibly other typically expensive math intrinsics (currently
everything is cheap by default). GPU targets would likely want to override those expensive default costs (just as
they probably should already override the cost of div/rem) because just about any math is cheaper than control-flow
on those targets.

Differential Revision: http://reviews.llvm.org/D15213

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255660 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[llvm-profdata] Add support for weighted merge of profile data (2nd try)
Nathan Slingerland [Tue, 15 Dec 2015 17:37:09 +0000 (17:37 +0000)]
[llvm-profdata] Add support for weighted merge of profile data (2nd try)

Summary:
This change adds support for specifying a weight when merging profile data with the llvm-profdata tool.
Weights are specified by using the --weighted-input=<weight>,<filename> option. Input files not specified
with this option (normal positional list after options) are given a default weight of 1.

Adding support for arbitrary weighting of input profile data allows for relative importance to be placed on the
input data from multiple training runs.

Both sampled and instrumented profiles are supported.

Reviewers: davidxl, dnovillo, bogner, silvas

Subscribers: silvas, davidxl, llvm-commits

Differential Revision: http://reviews.llvm.org/D15306

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255659 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAMDGPU: mark ldexp LibCalls as unavailable
Nicolai Hahnle [Tue, 15 Dec 2015 17:24:15 +0000 (17:24 +0000)]
AMDGPU: mark ldexp LibCalls as unavailable

Summary:
The LibCallSimplifier will turn llvm.exp2.* intrinsics into ldexp* libcalls
which do not make sense with the AMDGPU backend.

In the long run, we'll want an llvm.ldexp.* intrinsic to properly make use of
this optimization, but this works around the problem for now.

See also: http://reviews.llvm.org/D14327 (suggested llvm.ldexp.* implementation)
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92709

Reviewers: arsenm, tstellarAMD

Differential Revision: http://reviews.llvm.org/D14990

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255658 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAMDGPU/SI: Fix bitcast between v2f32 and f64
Tom Stellard [Tue, 15 Dec 2015 17:11:17 +0000 (17:11 +0000)]
AMDGPU/SI: Fix bitcast between v2f32 and f64

The radeonsi fp64 support can hit these now that some redundant bitcasts
are folded.

Patch by: Michel Dänzer

Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255657 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[X86] Smaller code for materializing 32-bit 1 and -1 constants
Hans Wennborg [Tue, 15 Dec 2015 17:10:28 +0000 (17:10 +0000)]
[X86] Smaller code for materializing 32-bit 1 and -1 constants

"movl $-1, %eax" is 5 bytes, "xorl %eax, %eax; decl %eax" is 3 bytes.
This commit makes LLVM use the latter when optimizing for size.

Differential Revision: http://reviews.llvm.org/D14971

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255656 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoWebAssembly: update expected torture test failures
JF Bastien [Tue, 15 Dec 2015 17:07:07 +0000 (17:07 +0000)]
WebAssembly: update expected torture test failures

We now have 252 expected failures.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255654 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[Hexagon] Preprocess mapped instructions before lowering to MC
Krzysztof Parzyszek [Tue, 15 Dec 2015 17:05:45 +0000 (17:05 +0000)]
[Hexagon] Preprocess mapped instructions before lowering to MC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255653 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAMDGPU/SI: Add llvm.amdgcn.mbcnt.* intrinsics
Tom Stellard [Tue, 15 Dec 2015 17:02:52 +0000 (17:02 +0000)]
AMDGPU/SI: Add llvm.amdgcn.mbcnt.* intrinsics

Summary:
These are meant to be used instead of the llvm.SI.tid intrinsic which will
be deprecated at some point.

Reviewers: arsenm

Subscribers: arsenm, llvm-commits

Differential Revision: http://reviews.llvm.org/D15475

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255652 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAMDGPU/SI: Add llvm.amdgcn.v.interp.p[12] intrinsics
Tom Stellard [Tue, 15 Dec 2015 17:02:49 +0000 (17:02 +0000)]
AMDGPU/SI: Add llvm.amdgcn.v.interp.p[12] intrinsics

Summary:
These are meant to be used instead of the llvm.SI.fs.interp intrinsic which
will be deprecated at some point.

Reviewers: arsenm

Subscribers: arsenm, llvm-commits

Differential Revision: http://reviews.llvm.org/D15474

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255651 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAMDGPU/SI: Add getShaderType() function to Utils/
Tom Stellard [Tue, 15 Dec 2015 16:26:16 +0000 (16:26 +0000)]
AMDGPU/SI: Add getShaderType() function to Utils/

Reviewers: arsenm

Subscribers: arsenm, llvm-commits

Differential Revision: http://reviews.llvm.org/D15424

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255650 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoBitcasts between FP and INT values using direct moves
Nemanja Ivanovic [Tue, 15 Dec 2015 14:50:34 +0000 (14:50 +0000)]
Bitcasts between FP and INT values using direct moves

This patch corresponds to review:
http://reviews.llvm.org/D15286

This patch was meant to land in revision 255246, but I accidentally uploaded
the patch that corresponds to http://reviews.llvm.org/D15372 in that revision
accidentally.

Thereby, this patch is the actual Bitcasts using direct moves patch, whereas
http://reviews.llvm.org/rL255246 actually corresponds to
http://reviews.llvm.org/D15372.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255649 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[x86] adding PKU feature flag
Asaf Badouh [Tue, 15 Dec 2015 13:35:29 +0000 (13:35 +0000)]
[x86] adding PKU feature flag

the feature flag is essential for RDPKRU and WRPKRU instruction
more about the instruction can be found in the SDM rev 56, vol 2 from http://www.intel.com/sdm

Differential Revision: http://reviews.llvm.org/D15491

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255644 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoDo not try to use i8 and i16 versions of FP_TO_U/SINT soft float library calls
Michael Kuperstein [Tue, 15 Dec 2015 12:55:50 +0000 (12:55 +0000)]
Do not try to use i8 and i16 versions of FP_TO_U/SINT soft float library calls

It appears that neither compiler-rt nor the gnu soft-float libraries actually
implement these conversions. Instead of emitting calls to library functions
that don't exist, handle it similarly to the way we handle i8 -> float and
i16 -> float conversions: call the i32 library function, and adjust the type.

Differential Revision: http://reviews.llvm.org/D15151

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255643 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoDefine a feature for __float128 support in the PPC back end
Nemanja Ivanovic [Tue, 15 Dec 2015 12:19:34 +0000 (12:19 +0000)]
Define a feature for __float128 support in the PPC back end

This patch corresponds to review:
http://reviews.llvm.org/D15117

In preparation for supporting IEEE Quad precision floating point,
this patch simply defines a feature to specify the target supports this.
For now, nothing is done with the target feature, we just don't want
warnings from the Clang FE when a user specifies -mfloat128.
Calling convention and other related work will add to this patch in
the near future.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255642 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoImprove the successor list update in TailDuplication.cpp.
Cong Hou [Tue, 15 Dec 2015 10:10:40 +0000 (10:10 +0000)]
Improve the successor list update in TailDuplication.cpp.

This patch improves a temporary fix in r255530 so that we can normalize
successor list without trigger assertion failures in tail duplication pass.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255638 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoInstCombineLoadStoreAlloca.cpp: Avoid instantiating Twine.
NAKAMURA Takumi [Tue, 15 Dec 2015 09:37:31 +0000 (09:37 +0000)]
InstCombineLoadStoreAlloca.cpp: Avoid instantiating Twine.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255637 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[PassManagerBuilder] Add a few more scalar optimization passes
James Molloy [Tue, 15 Dec 2015 09:24:01 +0000 (09:24 +0000)]
[PassManagerBuilder] Add a few more scalar optimization passes

This patch does two things:
  1. mem2reg is now run immediately after globalopt. Now that globalopt
     can localize variables more aggressively, it makes sense to lower
     them to SSA form earlier rather than later so they can benefit from
     the full set of optimization passes.

  2. More scalar optimizations are run after the loop optimizations in
     LTO mode. The loop optimizations (especially indvars) can clean up
     scalar code sufficiently to make it worthwhile running more scalar
     passes. I've particularly added SCCP here as it isn't run anywhere
     else in the LTO pass pipeline.

Mem2reg is super cheap and shouldn't affect compilation time at all. The
rest of the added passes are in the LTO pipeline only so doesn't affect
the vast majority of compilations, just the link step.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255634 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoMark ThreadPool unittests as unsupported on PowerPC64
Mehdi Amini [Tue, 15 Dec 2015 09:10:28 +0000 (09:10 +0000)]
Mark ThreadPool unittests as unsupported on PowerPC64

Bots are crashing unexpectingly, see: https://llvm.org/bugs/show_bug.cgi?id=25829

From: Mehdi Amini <mehdi.amini@apple.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255633 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoThreadPool unittest: add a rough mechanism to mark UNSUPPORTED on a given platform
Mehdi Amini [Tue, 15 Dec 2015 09:10:25 +0000 (09:10 +0000)]
ThreadPool unittest: add a rough mechanism to mark UNSUPPORTED on a given platform

From: Mehdi Amini <mehdi.amini@apple.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255632 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoType legalizer for masked gather and scatter intrinsics.
Elena Demikhovsky [Tue, 15 Dec 2015 08:40:41 +0000 (08:40 +0000)]
Type legalizer for masked gather and scatter intrinsics.

Full type legalizer that works with all vectors length - from 2 to 16, (i32, i64, float, double).

This intrinsic, for example
void @llvm.masked.scatter.v2f32(<2 x float>%data , <2 x float*>%ptrs , i32 align , <2 x i1>%mask )
requires type widening for data and type promotion for mask.

Differential Revision: http://reviews.llvm.org/D13633

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255629 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[IR] Add classof for GetElementPtrConstantExpr, CompareConstantExpr, InsertValueConst...
Craig Topper [Tue, 15 Dec 2015 06:11:36 +0000 (06:11 +0000)]
[IR] Add classof for GetElementPtrConstantExpr, CompareConstantExpr, InsertValueConstantExpr, and ExtractValueConstantExpr. All but CompareConstantExpr were being used in casts that were erroneously using ConstantExpr::classof due to inheritance. While there use cast<CompareConstantExpr> to simplify code slightly.

I believe in one place we were always casting to ExtractValueConstantExpr when we were trying to choose between ExtractValueConstantExpr and InsertValueConstantExpr because of this. But since they have identical layouts this didn't cause any observable problems.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255624 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoUse CmpInst::Predicate instead of 'unsigned short' in some places. NFC
Craig Topper [Tue, 15 Dec 2015 06:11:33 +0000 (06:11 +0000)]
Use CmpInst::Predicate instead of 'unsigned short' in some places. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255623 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoFix MSVC build with LLVM_ENABLE_THREADS=OFF
Mehdi Amini [Tue, 15 Dec 2015 05:53:41 +0000 (05:53 +0000)]
Fix MSVC build with LLVM_ENABLE_THREADS=OFF

Follow-up to the ThreadPool implementation.

From: Mehdi Amini <mehdi.amini@apple.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255621 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoLoopUtils: Remove defaults for arguments that are always specified. NFC
Justin Bogner [Tue, 15 Dec 2015 05:52:13 +0000 (05:52 +0000)]
LoopUtils: Remove defaults for arguments that are always specified. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255620 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoReplace the unit test of BranchProbability::normalizeEdgeWeights() with BranchProbabi...
Cong Hou [Tue, 15 Dec 2015 05:25:27 +0000 (05:25 +0000)]
Replace the unit test of BranchProbability::normalizeEdgeWeights() with BranchProbability::normalizeProbabilities().

BranchProbability::normalizeEdgeWeights() is going to be retired soon.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255618 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoFix template parameter pack handling in ThreadPool
Teresa Johnson [Tue, 15 Dec 2015 04:44:02 +0000 (04:44 +0000)]
Fix template parameter pack handling in ThreadPool

Fixes passing of template parameter pack via std::forward and add
unittest.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255617 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoBump up MAX_SUBTARGET_FEATURES
Weiming Zhao [Tue, 15 Dec 2015 04:42:49 +0000 (04:42 +0000)]
Bump up MAX_SUBTARGET_FEATURES

Summary:
Currently, ARMGenSubtargetInfo (from ARM.td) is reaching the limit of 96:
  enum : uint64_t {
       ...
       XScale = 95
  };

We need to bump the maximum value up to accommodate future changes and/or customized subtarget definitions.

Reviewers: apazos, t.p.northover

Subscribers: llvm-commits, aemerson

Differential Revision: http://reviews.llvm.org/D15514

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255616 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoNFC: Fix typo in comment
Vaivaswatha Nagaraj [Tue, 15 Dec 2015 04:41:10 +0000 (04:41 +0000)]
NFC: Fix typo in comment

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255615 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[ShrinkWrapping] Do not choose restore point inside loops.
Quentin Colombet [Tue, 15 Dec 2015 03:28:11 +0000 (03:28 +0000)]
[ShrinkWrapping] Do not choose restore point inside loops.

The post-dominance property is not sufficient to guarantee that a restore point
inside a loop is safe.
E.g.,
 while(1) {
   Save
   Restore
   if (...)
     break;
   use/def CSRs
 }
All the uses/defs of CSRs are dominated by Save and post-dominated
by Restore. However, the CSRs uses are still reachable after
Restore and before Save are executed.

This fixes PR25824

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255613 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[WebAssembly] Use an immediate OperandType for offset operands.
Dan Gohman [Tue, 15 Dec 2015 03:21:48 +0000 (03:21 +0000)]
[WebAssembly] Use an immediate OperandType for offset operands.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255612 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoTry to let r255604 have an effect.
Nico Weber [Tue, 15 Dec 2015 03:14:19 +0000 (03:14 +0000)]
Try to let r255604 have an effect.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255611 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAdd specific header for MSVC to be able to build with LLVM_ENABLE_THREADS=OFF
Mehdi Amini [Tue, 15 Dec 2015 02:32:03 +0000 (02:32 +0000)]
Add specific header for MSVC to be able to build with LLVM_ENABLE_THREADS=OFF

Follow-up to the ThreadPool library

From: Mehdi Amini <mehdi.amini@apple.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255604 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[WebAssembly] Remove .import printing.
Dan Gohman [Tue, 15 Dec 2015 02:20:44 +0000 (02:20 +0000)]
[WebAssembly] Remove .import printing.

For now, LLVM doesn't know about wasm module imports, so it shouldn't
emit .import directives.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255602 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoWebAssembly: test global array indexing
JF Bastien [Tue, 15 Dec 2015 02:02:51 +0000 (02:02 +0000)]
WebAssembly: test global array indexing

This case was tested in the linker from code, but not from globals indexing into other globals. The linker currently barfs on this, ncbray volunteered to fix it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255601 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoInstcombine: destructor loads of structs that do not contains padding
Mehdi Amini [Tue, 15 Dec 2015 01:44:07 +0000 (01:44 +0000)]
Instcombine: destructor loads of structs that do not contains padding

For non padded structs, we can just proceed and deaggregate them.
We don't want ot do this when there is padding in the struct as to not
lose information about this padding (the subsequents passes would then
try hard to preserve the padding, which is undesirable).

Also update extractvalue.ll and cast.ll so that they use structs with padding.

Remove the FIXME in the extractvalue of laod case as the non padded case is
handled when processing the load, and we don't want to do it on the padded
case.

Patch by: Amaury SECHET <deadalnix@gmail.com>

Differential Revision: http://reviews.llvm.org/D14483

From: Mehdi Amini <mehdi.amini@apple.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255600 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[llvm-readobj] s/FunctionName/LinkageName/ for codeview dumping
Reid Kleckner [Tue, 15 Dec 2015 01:23:55 +0000 (01:23 +0000)]
[llvm-readobj] s/FunctionName/LinkageName/ for codeview dumping

The symbol being printed in this field comes from the main symbol table,
not 0xF1 subsection. Use LinkageName to make that a lot clearer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255596 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoLet operator/ with uint32_t rhs operand be a member of BranchProbability and add...
Cong Hou [Tue, 15 Dec 2015 01:21:14 +0000 (01:21 +0000)]
Let operator/ with uint32_t rhs operand be a member of BranchProbability and add a new operator /=. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255595 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAdd a C++11 ThreadPool implementation in LLVM
Mehdi Amini [Tue, 15 Dec 2015 00:59:19 +0000 (00:59 +0000)]
Add a C++11 ThreadPool implementation in LLVM

This is a very simple implementation of a thread pool using C++11
thread. It accepts any std::function<void()> for asynchronous
execution. Individual task can be synchronize using the returned
future, or the client can block on the full queue completion.

In case LLVM is configured with Threading disabled, it falls back
to sequential execution using std::async with launch:deferred.

This is intended to support parallelism for ThinLTO processing in
linker plugin, but is generic enough for any other uses.

This is a recommit of r255444 ; trying to workaround a bug in the
MSVC 2013 standard library. I think I was hit by:

 http://connect.microsoft.com/VisualStudio/feedbackdetail/view/791185/std-packaged-task-t-where-t-is-void-or-a-reference-class-are-not-movable

Recommit of r255589, trying to please g++ as well.

Differential Revision: http://reviews.llvm.org/D15464

From: mehdi_amini <mehdi_amini@91177308-0d34-0410-b5e6-96231b3b80d8>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255593 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoRevert "Add a C++11 ThreadPool implementation in LLVM"
Mehdi Amini [Tue, 15 Dec 2015 00:42:44 +0000 (00:42 +0000)]
Revert "Add a C++11 ThreadPool implementation in LLVM"

This reverts commit r255589. Breaks g++

From: Mehdi Amini <mehdi.amini@apple.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255591 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAdd a C++11 ThreadPool implementation in LLVM
Mehdi Amini [Tue, 15 Dec 2015 00:38:05 +0000 (00:38 +0000)]
Add a C++11 ThreadPool implementation in LLVM

This is a very simple implementation of a thread pool using C++11
thread. It accepts any std::function<void()> for asynchronous
execution. Individual task can be synchronize using the returned
future, or the client can block on the full queue completion.

In case LLVM is configured with Threading disabled, it falls back
to sequential execution using std::async with launch:deferred.

This is intended to support parallelism for ThinLTO processing in
linker plugin, but is generic enough for any other uses.

This is a recommit of r255444 ; trying to workaround a bug in the
MSVC 2013 standard library. I think I was hit by:

 http://connect.microsoft.com/VisualStudio/feedbackdetail/view/791185/std-packaged-task-t-where-t-is-void-or-a-reference-class-are-not-movable

Differential Revision: http://reviews.llvm.org/D15464

From: Mehdi Amini <mehdi.amini@apple.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255589 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[PGO] make profile prefix even shorter and more readable
Xinliang David Li [Tue, 15 Dec 2015 00:32:56 +0000 (00:32 +0000)]
[PGO] make profile prefix even shorter and more readable

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255586 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[X86] Add relaxtion logic for SBB instructions.
Quentin Colombet [Tue, 15 Dec 2015 00:09:23 +0000 (00:09 +0000)]
[X86] Add relaxtion logic for SBB instructions.

Prior to this patch, we would wrongly stick to the variant with imm8 encoding
even when the relocation could not fit that size.

rdar://problem/23785506

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255583 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agosancov: coverage can be reported by multiple functions.
Mike Aizatsky [Mon, 14 Dec 2015 23:55:04 +0000 (23:55 +0000)]
sancov: coverage can be reported by multiple functions.

Differential Revision: http://reviews.llvm.org/D15430

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255582 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoYet another missing include.
Rafael Espindola [Mon, 14 Dec 2015 23:39:05 +0000 (23:39 +0000)]
Yet another missing include.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255579 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoA better attempt to add a missing include
Rafael Espindola [Mon, 14 Dec 2015 23:34:35 +0000 (23:34 +0000)]
A better attempt to add a missing include

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255578 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoTrying to fix the build in a bot.
Rafael Espindola [Mon, 14 Dec 2015 23:31:08 +0000 (23:31 +0000)]
Trying to fix the build in a bot.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255577 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[PGO] Shorten profile symbol prefixes
Xinliang David Li [Mon, 14 Dec 2015 23:26:27 +0000 (23:26 +0000)]
[PGO] Shorten profile symbol prefixes

Profile symbols have long prefixes which waste space and creating pressure for linker.
This patch shortens the prefixes to minimal length without losing verbosity.

Differential Revision: http://reviews.llvm.org/D15503

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255575 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoLoopRotate: Convert the methods of LoopRotate to utility functions. NFC
Justin Bogner [Mon, 14 Dec 2015 23:22:48 +0000 (23:22 +0000)]
LoopRotate: Convert the methods of LoopRotate to utility functions. NFC

This moves the actual work to do loop rotation into standalone
functions with the analysis results they need passed in as arguments,
leaving the class itself as a relatively simple shim. This will make
the functions easy to reuse when we're ready to port this
transformation to the new pass manager.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255574 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoLoopRotate: Reorder some method implementations. NFC
Justin Bogner [Mon, 14 Dec 2015 23:22:44 +0000 (23:22 +0000)]
LoopRotate: Reorder some method implementations. NFC

This just moves some callers after their callees. My next patch will
convert some of these methods to stand alone functions, and that diff
is more obviously NFC if I move these first. That change, in turn,
will make it much easier to port this pass to the new pass manager
once the loop pass manager is in place.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255573 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoUse diagnostic handler in the LLVMContext
Rafael Espindola [Mon, 14 Dec 2015 23:17:03 +0000 (23:17 +0000)]
Use diagnostic handler in the LLVMContext

This patch converts code that has access to a LLVMContext to not take a
diagnostic handler.

This has a few advantages

* It is easier to use a consistent diagnostic handler in a single program.
* Less clutter since we are not passing a handler around.

It does make it a bit awkward to implement some C APIs that return a
diagnostic string. I will propose new versions of these APIs and
deprecate the current ones.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255571 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[X86] Add relaxtion logic for ADC instructions.
Quentin Colombet [Mon, 14 Dec 2015 23:12:40 +0000 (23:12 +0000)]
[X86] Add relaxtion logic for ADC instructions.

Prior to this patch, we would wrongly stick to the variant with imm8 encoding
even when the relocation could not fit that size.

rdar://problem/23785506

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255570 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoFactor out some duplication. NFC.
Pete Cooper [Mon, 14 Dec 2015 23:10:52 +0000 (23:10 +0000)]
Factor out some duplication.  NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255569 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[WebAssembly] Add type prefixes to call instructions
Dan Gohman [Mon, 14 Dec 2015 22:56:51 +0000 (22:56 +0000)]
[WebAssembly] Add type prefixes to call instructions

Add return type information to call and call_indirect instructions. This
allows them to be disambiguated without knowledge of the callee.

Differential Revision: http://reviews.llvm.org/D15484

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255565 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[WebAssembly] Implement a new algorithm for placing BLOCK markers
Dan Gohman [Mon, 14 Dec 2015 22:51:54 +0000 (22:51 +0000)]
[WebAssembly] Implement a new algorithm for placing BLOCK markers

Implement a new BLOCK scope placement algorithm which better handles
early-return blocks and early exists from nested scopes.

Differential Revision: http://reviews.llvm.org/D15368

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255564 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[WebAssembly] Avoid adding redundant EXPR_STACK uses.
Dan Gohman [Mon, 14 Dec 2015 22:37:23 +0000 (22:37 +0000)]
[WebAssembly] Avoid adding redundant EXPR_STACK uses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255563 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoRevert "Don't create unnecessary PHIs"
Reid Kleckner [Mon, 14 Dec 2015 22:36:57 +0000 (22:36 +0000)]
Revert "Don't create unnecessary PHIs"

This reverts commit r255489.

It causes test failures in Chromium and does not appear to respect the
AlternativeV parameter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255562 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[X86] Part 2 to fix x86-64 fp128 calling convention.
Chih-Hung Hsieh [Mon, 14 Dec 2015 22:08:36 +0000 (22:08 +0000)]
[X86] Part 2 to fix x86-64 fp128 calling convention.

Part 1 was submitted in http://reviews.llvm.org/D15134.
Changes in this part:
* X86RegisterInfo.td, X86RecognizableInstr.cpp: Add FR128 register class.
* X86CallingConv.td: Pass f128 values in XMM registers or on stack.
* X86InstrCompiler.td, X86InstrInfo.td, X86InstrSSE.td:
  Add instruction selection patterns for f128.
* X86ISelLowering.cpp:
  When target has MMX registers, configure MVT::f128 in FR128RegClass,
  with TypeSoftenFloat action, and custom actions for some opcodes.
  Add missed cases of MVT::f128 in places that handle f32, f64, or vector types.
  Add TODO comment to support f128 type in inline assembly code.
* SelectionDAGBuilder.cpp:
  Fix infinite loop when f128 type can have
  VT == TLI.getTypeToTransformTo(Ctx, VT).
* Add unit tests for x86-64 fp128 type.

Differential Revision: http://reviews.llvm.org/D11438

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255558 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoadd fast-math-flags to 'call' instructions (PR21290)
Sanjay Patel [Mon, 14 Dec 2015 21:59:03 +0000 (21:59 +0000)]
add fast-math-flags to 'call' instructions (PR21290)

This patch adds optional fast-math-flags (the same that apply to fmul/fadd/fsub/fdiv/frem/fcmp)
to call instructions in IR. Follow-up patches would use these flags in LibCallSimplifier, add
support to clang, and extend FMF to the DAG for calls.

Motivating example:

%y = fmul fast float %x, %x
%z = tail call float @sqrtf(float %y)

We'd like to be able to optimize sqrt(x*x) into fabs(x). We do this today using a function-wide
attribute for unsafe-math, but we really want to trigger on the instructions themselves:

%z = tail call fast float @sqrtf(float %y)

because in an LTO build it's possible that calls with fast semantics have been inlined into a
function with non-fast semantics.

The code changes and tests are based on the recent commits that added "notail":
http://reviews.llvm.org/rL252368

and added FMF to fcmp:
http://reviews.llvm.org/rL241901

Differential Revision: http://reviews.llvm.org/D14707

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255555 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoReordering fields to reduce padding in LLVM. NFC
Ben Craig [Mon, 14 Dec 2015 21:57:05 +0000 (21:57 +0000)]
Reordering fields to reduce padding in LLVM.  NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255554 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[WebAssembly] Add an assert to sanity-check dead flags.
Dan Gohman [Mon, 14 Dec 2015 21:53:54 +0000 (21:53 +0000)]
[WebAssembly] Add an assert to sanity-check dead flags.

The WebAssemblyStoreResults pass runs before LiveVariables, so it doesn't
expect to have to keep dead flags up to date; check this with an assert.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255551 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoStart implementing FDE dumping when printing the eh_frame.
Pete Cooper [Mon, 14 Dec 2015 21:49:49 +0000 (21:49 +0000)]
Start implementing FDE dumping when printing the eh_frame.

This code adds some simple decoding of the FDE's in an eh_frame.

There's still more to be done in terms of error handling and verification.

Also, we need to be able to decode the CFI's.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255550 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoPrint the eh_frame section in MachoDump.
Pete Cooper [Mon, 14 Dec 2015 21:39:27 +0000 (21:39 +0000)]
Print the eh_frame section in MachoDump.

This is the start of work to dump the contents of the eh_frame section.

It currently emits CIE entries.  FDE entries will come later.

It also needs improved error checking which will follow soon.

http://reviews.llvm.org/D15502

Reviewed by Kevin Enderby and Lang Hames.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255546 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[Hexagon] Add "const" to function parameters in HexagonInstrInfo
Krzysztof Parzyszek [Mon, 14 Dec 2015 21:32:25 +0000 (21:32 +0000)]
[Hexagon] Add "const" to function parameters in HexagonInstrInfo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255544 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoFix formatting. NFC.
Diego Novillo [Mon, 14 Dec 2015 20:37:15 +0000 (20:37 +0000)]
Fix formatting. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255541 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[Packetizer] Add AliasAnalysis as a parameter to the packetizer
Krzysztof Parzyszek [Mon, 14 Dec 2015 20:35:13 +0000 (20:35 +0000)]
[Packetizer] Add AliasAnalysis as a parameter to the packetizer

This will make the depedence graph more accurate if an alias analysis
is provided. If nullptr is specified in its place, the behavior will
remain as it is currently.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255540 91177308-0d34-0410-b5e6-96231b3b80d8