This patch adds an option to the build system LLVM_DEPENDENCY_DEBUGGING. Over time I plan to extend this to do more complex verifications, but the initial patch causes compile errors wherever there is missing a dependency on intrinsics_gen.

Because intrinsics_gen is a compile-time dependency not a link-time dependency, everything that relies on the headers generated in intrinsics_gen needs an explicit dependency.

llvm-svn: 287207

This patch updates a bunch of places where add_dependencies was being explicitly called to add dependencies on intrinsics_gen to instead use the DEPENDS named parameter. This cleanup is needed for a patch I'm working on to add a dependency debugging mode to the build system.

llvm-svn: 287206

This patch updates a couple places where add_dependencies was being explicitly called to add dependencies on intrinsics_gen to instead use the DEPENDS named parameter. This cleanup is needed for a patch I'm working on to add a dependency debugging mode to the build system.

llvm-svn: 287205

llvm-svn: 287204

llvm-svn: 287203

llvm-svn: 287202

llvm-svn: 287201

llvm-svn: 287200

Differential Revision: https://reviews.llvm.org/D26732

llvm-svn: 287199

Because it is uint16_t in the ELF spec. Using size_t was confusing.

llvm-svn: 287198

llvm-svn: 287197

We used to create a vector contantaining all version definitions
with wildcards because doing that was efficient. All patterns were
compiled to a regexp and matched against symbol names. Because
a regexp can be converted to a DFA, matching against union of patterns
is as cheap as matching against one patter.

We are no longer converting them to regexp. Our own glob pattern
handler doesn't do such optimization. Therefore, creating a vector
no longer makes sense.

llvm-svn: 287196

llvm-svn: 287195

is completely irrelevant, producing (effectively) false positives, and -Wmost
is used pretty widely. We should somehow turn it back on by default when
targeting the MS ABI, however, since it indicates the program will not do as
intended in those cases.

(Or perhaps we should just treat enum bitfields as having the signedness of the
enum, even when targeting the MS ABI...)

llvm-svn: 287193

llvm-svn: 287192

llvm-svn: 287191

llvm-svn: 287190

Also significantly reduced the indentation level by use of
early returns, and simplified some of the logic by using
StringRef functions such as consumeInteger() and getAsInteger()
instead of strtoll, etc.

llvm-svn: 287189

Differential Revision: https://reviews.llvm.org/D26721

llvm-svn: 287188

During template instantiation, we currently fall back to just calling
Sema::SubstExpr for enable_if attributes that aren't value-dependent or
type-dependent. Since Sema::SubstExpr strips off any implicit casts
we've added to an expression, it's possible that this behavior will
leave us with an enable_if condition that's just a DeclRefExpr.
Conditions like that deeply confuse Sema::CheckEnableIf.

llvm-svn: 287187

Summary:
For flat loop, even if it is hot, it is not a good idea to unroll in runtime, thus we set a lower partial unroll threshold.
For hot loop, we set a higher unroll threshold and allows expensive tripcount computation to allow more aggressive unrolling.

Reviewers: davidxl, mzolotukhin

Subscribers: sanjoy, mehdi_amini, llvm-commits

Differential Revision: https://reviews.llvm.org/D26527

llvm-svn: 287186

This should fix a failure on PowerPC introduced by r287181.

llvm-svn: 287185

The last remaining necessary change was D25403, landed as r287012.

llvm-svn: 287184

llvm-svn: 287183

llvm-svn: 287182

Summary:
this is to prevent a situation when a pointer is invalid or null,
but we get to reading from vtable before we can check that
(possibly causing a segfault without a good diagnostics).

Reviewers: pcc

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D26559

llvm-svn: 287181

This is a remnant of an on-chip unit testing tool that has since been
moved out-of-tree.

It was accidentally committed in r287162.

llvm-svn: 287180

lld has LTO support, if requested we should add a dependency on lld
rather than LLVMgold when doing LTO bootstrap build.

Differential Revision: https://reviews.llvm.org/D26649

llvm-svn: 287179

This pass splits globals into elements using inrange annotations on
getelementptr indices.

Differential Revision: https://reviews.llvm.org/D22295

llvm-svn: 287178

Summary:
Add a warning when assigning enums to bitfields without an explicit
unsigned underlying type. This is to prevent problems with MSVC
compatibility, since the Microsoft ABI defaults to storing enums with a
signed type, causing inconsistencies with saving to/reading from
bitfields.

Also disabled the warning in the dr0xx.cpp test which throws the error,
and added a test for the warning.

The warning can be disabled with -Wno-signed-enum-bitfield.

Patch by Sasha Bermeister!

Reviewers: rnk, aaron.ballman

Subscribers: mehdi_amini, aaron.ballman, cfe-commits, thakis, dcheng

Differential Revision: https://reviews.llvm.org/D24289

llvm-svn: 287177

The '-fpermissive' compiler flag complains if the template
specializations used in the class are used in a different namespace.

llvm-svn: 287176

Remove the check::RegionChanges::wantsRegionChangeUpdate callback as it is no
longer used (since checkPointerEscape has been added).

A patch by Krzysztof Wiśniewski!

Differential Revision: https://reviews.llvm.org/D26759

llvm-svn: 287175

The branch selector would change the names.

llvm-svn: 287174

llvm-svn: 287173

This adds two test files that verify the 'cttz' and 'ctlz' operations.

llvm-svn: 287172

We save an inter-register file move this way. If there's any CPU where
the FP logic is slower, we could transform this back to int-logic in 
MachineCombiner.

This helps, but doesn't solve, PR6137:
https://llvm.org/bugs/show_bug.cgi?id=6137

The 'andn' test shows that we're missing a pattern match to
recognize the xor with -1 constant as a 'not' op.

llvm-svn: 287171

This should prevent stack overflows in non-optimized builds on
.ll files with lots of consecutive commented-out lines.

Instead of recursing into LexToken(), continue into a 'while (true)'.

llvm-svn: 287170

While there, rename them to follow the coding style.

llvm-svn: 287169

This reverts commit r286962.

We want to avoid depending on SelectionDAG, and AddLandingPadInfo
lives in CodeGen now.

llvm-svn: 287168

They're not SelectionDAG- or FunctionLoweringInfo-specific.  They
are, however, specific to building MMI from IR.
We could make them members, but it's nice having MMI be a "simple" data
structure and this logic kept separate.

This also lets us reuse them from GlobalISel.

llvm-svn: 287167