Commit Graph

138 Commits

Author SHA1 Message Date
Peter Collingbourne d4bff30370 DI: Reverse direction of subprogram -> function edge.
Previously, subprograms contained a metadata reference to the function they
described. Because most clients need to get or set a subprogram for a given
function rather than the other way around, this created unneeded inefficiency.

For example, many passes needed to call the function llvm::makeSubprogramMap()
to build a mapping from functions to subprograms, and the IR linker needed to
fix up function references in a way that caused quadratic complexity in the IR
linking phase of LTO.

This change reverses the direction of the edge by storing the subprogram as
function-level metadata and removing DISubprogram's function field.

Since this is an IR change, a bitcode upgrade has been provided.

Fixes PR23367. An upgrade script for textual IR for out-of-tree clients is
attached to the PR.

Differential Revision: http://reviews.llvm.org/D14265

llvm-svn: 252219
2015-11-05 22:03:56 +00:00
Duncan P. N. Exon Smith e82c286fba Instrumentation: Remove ilist iterator implicit conversions, NFC
llvm-svn: 250186
2015-10-13 17:39:10 +00:00
Alexander Kornienko f00654e31b Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC)
Apparently, the style needs to be agreed upon first.

llvm-svn: 240390
2015-06-23 09:49:53 +00:00
Alexander Kornienko 70bc5f1398 Fixed/added namespace ending comments using clang-tidy. NFC
The patch is generated using this command:

tools/clang/tools/extra/clang-tidy/tool/run-clang-tidy.py -fix \
  -checks=-*,llvm-namespace-comment -header-filter='llvm/.*|clang/.*' \
  llvm/lib/


Thanks to Eugene Kosov for the original patch!

llvm-svn: 240137
2015-06-19 15:57:42 +00:00
David Blaikie ff6409d096 Simplify IRBuilder::CreateCall* by using ArrayRef+initializer_list/braced init only
llvm-svn: 237624
2015-05-18 22:13:54 +00:00
Duncan P. N. Exon Smith a9308c49ef IR: Give 'DI' prefix to debug info metadata
Finish off PR23080 by renaming the debug info IR constructs from `MD*`
to `DI*`.  The last of the `DIDescriptor` classes were deleted in
r235356, and the last of the related typedefs removed in r235413, so
this has all baked for about a week.

Note: If you have out-of-tree code (like a frontend), I recommend that
you get everything compiling and tests passing with the *previous*
commit before updating to this one.  It'll be easier to keep track of
what code is using the `DIDescriptor` hierarchy and what you've already
updated, and I think you're extremely unlikely to insert bugs.  YMMV of
course.

Back to *this* commit: I did this using the rename-md-di-nodes.sh
upgrade script I've attached to PR23080 (both code and testcases) and
filtered through clang-format-diff.py.  I edited the tests for
test/Assembler/invalid-generic-debug-node-*.ll by hand since the columns
were off-by-three.  It should work on your out-of-tree testcases (and
code, if you've followed the advice in the previous paragraph).

Some of the tests are in badly named files now (e.g.,
test/Assembler/invalid-mdcompositetype-missing-tag.ll should be
'dicompositetype'); I'll come back and move the files in a follow-up
commit.

llvm-svn: 236120
2015-04-29 16:38:44 +00:00
Duncan P. N. Exon Smith 2fbe13540a DebugInfo: Delete subclasses of DIScope
Delete subclasses of (the already defunct) `DIScope`, updating users to
use the raw pointers from the `Metadata` hierarchy directly.

llvm-svn: 235356
2015-04-20 22:10:08 +00:00
Duncan P. N. Exon Smith 35ef22cf53 DebugInfo: Gut DICompileUnit and DIFile
Continuing gutting `DIDescriptor` subclasses; this edition,
`DICompileUnit` and `DIFile`.  In the name of PR23080.

llvm-svn: 235055
2015-04-15 23:19:27 +00:00
Duncan P. N. Exon Smith 537b4a8159 DebugInfo: Gut DISubprogram and DILexicalBlock*
Gut the `DIDescriptor` wrappers around `MDLocalScope` subclasses.  Note
that `DILexicalBlock` wraps `MDLexicalBlockBase`, not `MDLexicalBlock`.

llvm-svn: 234850
2015-04-14 03:40:37 +00:00
Benjamin Kramer 79de6e6d89 Mark empty default constructors as =default if it makes the type POD
NFC

llvm-svn: 234694
2015-04-11 18:57:14 +00:00
Duncan P. N. Exon Smith 000fa2c646 DebugInfo: Remove DITypedArray<>, replace with typedefs
Replace all uses of `DITypedArray<>` with `MDTupleTypedArrayWrapper<>`
and `MDTypeRefArray`.  The APIs are completely different, but the
provided functionality is the same: treat an `MDTuple` as if it's an
array of a particular element type.

To simplify this patch a bit, I've temporarily typedef'ed
`DebugNodeArray` to `DIArray` and `MDTypeRefArray` to `DITypeArray`.
I've also temporarily conditionalized the accessors to check for null --
eventually these should be changed to asserts and the callers should
check for null themselves.

There's a tiny accompanying patch to clang.

llvm-svn: 234290
2015-04-07 04:14:33 +00:00
Duncan P. N. Exon Smith 6186fb2cd0 Transforms: Stop using DIDescriptor::is*() and auto-casting
Same as r234255, but for lib/Analysis and lib/Transforms.

llvm-svn: 234257
2015-04-06 23:27:00 +00:00
David Blaikie aa41cd57e0 [opaque pointer type] More GEP IRBuilder API migrations...
llvm-svn: 234058
2015-04-03 21:33:42 +00:00
David Blaikie 93c5444fe0 [opaque pointer type] More GEP API migrations in IRBuilder uses
The plan here is to push the API changes out from the common components
(like Constant::getGetElementPtr and IRBuilder::CreateGEP related
functions) and just update callers to either pass the type if it's
obvious, or pass null.

Do this with LoadInst as well and anything else that comes up, then to
start porting specific uses to not pass null anymore - this may require
some refactoring in each case.

llvm-svn: 234042
2015-04-03 19:41:44 +00:00
Duncan P. N. Exon Smith ec819c096b Transforms: Use the new DebugLoc API, NFC
Update lib/Analysis and lib/Transforms to use the new `DebugLoc` API.

llvm-svn: 233587
2015-03-30 19:49:49 +00:00
Yaron Keren 75e0c4b060 Remove superfluous .str() and replace std::string concatenation with Twine.
llvm-svn: 233392
2015-03-27 17:51:30 +00:00
Justin Bogner 3faa76bfab GCOV: Make the exit block placement from r223193 optional
By default we want our gcov emission to stay 4.2 compatible, which
means we need to continue emit the exit block last by default. We add
an option to emit it before the body for users that need it.

llvm-svn: 232438
2015-03-16 23:52:03 +00:00
Benjamin Kramer 298a3a0567 Fold init() helpers into constructors. NFC.
llvm-svn: 231486
2015-03-06 16:21:15 +00:00
David Blaikie ea37c1173e Remove dynamic allocation/indirection from GCOVBlocks owned by GCOVFunction
Since these are all created in the DenseMap before they are referenced,
there's no problem with pointer validity by the time it's required. This
removes another use of DeleteContainerSeconds/manual memory management
which I'm cleaning up from time to time.

llvm-svn: 224744
2014-12-22 23:12:42 +00:00
Nick Lewycky 2e8a6219fc Emit the entry block first and the exit block second, then all the blocks in between afterwards. This is what gcc always does, and some out of tree tools depend on that.
llvm-svn: 223193
2014-12-03 02:45:01 +00:00
Duncan P. N. Exon Smith de36e8040f Revert "IR: MDNode => Value"
Instead, we're going to separate metadata from the Value hierarchy.  See
PR21532.

This reverts commit r221375.
This reverts commit r221373.
This reverts commit r221359.
This reverts commit r221167.
This reverts commit r221027.
This reverts commit r221024.
This reverts commit r221023.
This reverts commit r220995.
This reverts commit r220994.

llvm-svn: 221711
2014-11-11 21:30:22 +00:00
Justin Bogner 58e41344f9 GCOV: Make sure that function idents in the .gcda and .gcno match
When generating gcov compatible profiling, we sometimes skip emitting
data for functions for one reason or another. However, this was
emitting different function IDs in the .gcno and .gcda files, because
the .gcno case was using the loop index before skipping functions and
the .gcda the array index after. This resulted in completely invalid
gcov data.

This fixes the problem by making the .gcno loop track the ID
separately from the loop index.

llvm-svn: 221441
2014-11-06 06:55:02 +00:00
Duncan P. N. Exon Smith c5754a65e6 IR: MDNode => Value: NamedMDNode::getOperator()
Change `NamedMDNode::getOperator()` from returning `MDNode *` to
returning `Value *`.  To reduce boilerplate at some call sites, add a
`getOperatorAsMDNode()` for named metadata that's expected to only
return `MDNode` -- for now, that's everything, but debug node named
metadata (such as llvm.dbg.cu and llvm.dbg.sp) will soon change.  This
is part of PR21433.

Note that there's a follow-up patch to clang for the API change.

llvm-svn: 221375
2014-11-05 18:16:03 +00:00
Craig Topper e1d1294853 Simplify creation of a bunch of ArrayRefs by using None, makeArrayRef or just letting them be implicitly created.
llvm-svn: 216525
2014-08-27 05:25:25 +00:00
Rafael Espindola 3fd1e9933f Modernize raw_fd_ostream's constructor a bit.
Take a StringRef instead of a "const char *".
Take a "std::error_code &" instead of a "std::string &" for error.

A create static method would be even better, but this patch is already a bit too
big.

llvm-svn: 216393
2014-08-25 18:16:47 +00:00
Alp Toker e69170a110 Revert "Introduce a string_ostream string builder facilty"
Temporarily back out commits r211749, r211752 and r211754.

llvm-svn: 211814
2014-06-26 22:52:05 +00:00
Alp Toker 614717388c Introduce a string_ostream string builder facilty
string_ostream is a safe and efficient string builder that combines opaque
stack storage with a built-in ostream interface.

small_string_ostream<bytes> additionally permits an explicit stack storage size
other than the default 128 bytes to be provided. Beyond that, storage is
transferred to the heap.

This convenient class can be used in most places an
std::string+raw_string_ostream pair or SmallString<>+raw_svector_ostream pair
would previously have been used, in order to guarantee consistent access
without byte truncation.

The patch also converts much of LLVM to use the new facility. These changes
include several probable bug fixes for truncated output, a programming error
that's no longer possible with the new interface.

llvm-svn: 211749
2014-06-26 00:00:48 +00:00
Nick Lewycky ff114dae5a Fix coverage for files with global constructors again. Adds a testcase to the commit from r206671, as requested by David Blaikie.
llvm-svn: 210239
2014-06-05 04:31:43 +00:00
Nick Lewycky ce98b43316 Explain why we skip DbgInfoIntrinsics when looking at line numbers in .gcno file emission.
llvm-svn: 210218
2014-06-04 21:47:19 +00:00
Nick Lewycky 5f53ddd0cc Ignore line numbers on debug intrinsics. Add an assert to ensure that we aren't emitting line number zero, the .gcno format uses this to indicate that the next field is a filename.
llvm-svn: 210068
2014-06-03 04:25:36 +00:00
Chandler Carruth 964daaaf19 [Modules] Fix potential ODR violations by sinking the DEBUG_TYPE
definition below all of the header #include lines, lib/Transforms/...
edition.

This one is tricky for two reasons. We again have a couple of passes
that define something else before the includes as well. I've sunk their
name macros with the DEBUG_TYPE.

Also, InstCombine contains headers that need DEBUG_TYPE, so now those
headers #define and #undef DEBUG_TYPE around their code, leaving them
well formed modular headers. Fixing these headers was a large motivation
for all of these changes, as "leaky" macros of this form are hard on the
modules implementation.

llvm-svn: 206844
2014-04-22 02:55:47 +00:00
David Blaikie 229de508bb Use unique_ptr to handle ownership of GCOVFunctions in GCOVProfiler.
llvm-svn: 206786
2014-04-21 20:41:55 +00:00
Nick Lewycky 05e0f1ccff Check whether functions have any lines associated before emitting coverage info for them. This isn't just a size/time saving, gcov may crash on these.
llvm-svn: 206671
2014-04-18 23:32:28 +00:00
Duncan P. N. Exon Smith cec1c2486a Cleanup whitespace
llvm-svn: 203529
2014-03-11 02:44:45 +00:00
Ahmed Charles 56440fd820 Replace OwningPtr<T> with std::unique_ptr<T>.
This compiles with no changes to clang/lld/lldb with MSVC and includes
overloads to various functions which are used by those projects and llvm
which have OwningPtr's as parameters. This should allow out of tree
projects some time to move. There are also no changes to libs/Target,
which should help out of tree targets have time to move, if necessary.

llvm-svn: 203083
2014-03-06 05:51:42 +00:00
Chandler Carruth 9a4c9e597b [Layering] Move DebugInfo.h into the IR library where its implementation
already lives.

llvm-svn: 203046
2014-03-06 00:46:21 +00:00
Chandler Carruth 9205140772 [Layering] Move DebugLoc.h into the IR library. The implementation
already lived there and it is where it belongs -- this is the in-memory
debug location representation.

This is just cleanup -- Modules can actually cope with this, but that
doesn't make it right. After chatting with folks that have out-of-tree
stuff, going ahead and moving the rest of the headers seems preferable.

llvm-svn: 202960
2014-03-05 10:30:38 +00:00
Craig Topper 3e4c697ca1 [C++11] Add 'override' keyword to virtual methods that override their base class.
llvm-svn: 202953
2014-03-05 09:10:37 +00:00
Chandler Carruth 8394857f43 [Modules] Move InstIterator out of the Support library, where it had no
business.

This header includes Function and BasicBlock and directly uses the
interfaces of both classes. It has to do with the IR, it even has that
in the name. =] Put it in the library it belongs to.

This is one step toward making LLVM's Support library survive a C++
modules bootstrap.

llvm-svn: 202814
2014-03-04 10:30:26 +00:00
Benjamin Kramer b6d0bd48bd [C++11] Replace llvm::next and llvm::prior with std::next and std::prev.
Remove the old functions.

llvm-svn: 202636
2014-03-02 12:27:27 +00:00
Benjamin Kramer 3a377bce4e Now that we have C++11, turn simple functors into lambdas and remove a ton of boilerplate.
No intended functionality change.

llvm-svn: 202588
2014-03-01 11:47:00 +00:00
Rafael Espindola 90c7f1cc16 Replace the F_Binary flag with a F_Text one.
After this I will set the default back to F_None. The advantage is that
before this patch forgetting to set F_Binary would corrupt a file on windows.
Forgetting to set F_Text produces one that cannot be read in notepad, which
is a better failure mode :-)

llvm-svn: 202052
2014-02-24 18:20:12 +00:00
Bob Wilson 055a0b4ca2 Fix a bug in gcov instrumentation introduced by r195513. <rdar://15930350>
The entry block of a function starts with all the static allocas. The change
in r195513 splits the block before those allocas, which has the effect of
turning them into dynamic allocas. That breaks all sorts of things. Change to
split after the initial allocas, and also add a comment explaining why the
block is split.

llvm-svn: 200515
2014-01-31 05:24:01 +00:00
Yuchen Wu c15bf89122 llvm-cov: Replace size() with empty() in bool check.
llvm-svn: 196400
2013-12-04 19:18:23 +00:00
Daniel Jasper 87a24d5c27 Un-revert r196358: "llvm-cov: Added support for function checksums."
And add the proper fix.

llvm-svn: 196367
2013-12-04 08:57:17 +00:00
Daniel Jasper c176b5d1d6 Revert r196358: "llvm-cov: Added support for function checksums."
This currently breaks clang/test/CodeGen/code-coverage.c. The root cause
is that the newly introduced access to Funcs[j] is out of bounds.

llvm-svn: 196365
2013-12-04 08:23:33 +00:00
Yuchen Wu 06655f3570 llvm-cov: Added support for function checksums.
The function checksums are hashed from the concatenation of the function
name and line number.

llvm-svn: 196358
2013-12-04 06:00:17 +00:00
Yuchen Wu c87ca32163 llvm-cov: Split entry blocks in GCNOProfiling.cpp.
gcov expects every function to contain an entry block that
unconditionally branches into the next block. clang does not implement
basic blocks in this manner, so gcov did not output correct branch info
if the entry block branched to multiple blocks.

This change splits every function's entry block into an empty block and
a block with the rest of the instructions. The instrumentation code will
take care of the rest.

llvm-svn: 195513
2013-11-22 23:07:45 +00:00
Yuchen Wu 2a9d96992d llvm-cov: Don't assume FileChecksum was generated.
For cases where emitProfileArcs() was called but emitProfileNotes() was
not, set the CfgChecksum to 0.

llvm-svn: 195311
2013-11-21 04:53:39 +00:00
Yuchen Wu 664dc7678b llvm-cov: Fixed some bugs related to file checksum.
Added call to update CfgChecksum. Made FileChecksum a vector, separate
for each source file.

llvm-svn: 195309
2013-11-21 04:01:05 +00:00