Francisco Lopes da Silva [Mon, 5 Jan 2015 19:59:24 +0000 (19:59 +0000)]
Fix lit for builds under /opt
llvm-svn: 225196
Zachary Turner [Mon, 5 Jan 2015 19:37:03 +0000 (19:37 +0000)]
Fix about 20 tests on Windows.
Passing the argument string from dosep to dotest was failing on
Windows due to the fact that Windows uses \ for its path separator.
As a result, shlex.split() was treating it as an escape character.
This fixes the issue by telling shlex.split() to not use posix mode
when running on Windows.
llvm-svn: 225195
Dan Albert [Mon, 5 Jan 2015 19:31:59 +0000 (19:31 +0000)]
Fix some formatting I messed up in r225187.
llvm-svn: 225194
Greg Clayton [Mon, 5 Jan 2015 19:23:33 +0000 (19:23 +0000)]
Make sure x7 and x8 are treated as argument registers for arm64.
llvm-svn: 225193
Hal Finkel [Mon, 5 Jan 2015 18:52:29 +0000 (18:52 +0000)]
[PowerPC] Remove zexts after i32 ctlz
The 64-bit semantics of cntlzw are not special, the 32-bit population count is
stored as a 64-bit value in the range [0,32]. As a result, it is always zero
extended, and it can be added to the PPCISelDAGToDAG peephole optimization as a
frontier instruction for the removal of unnecessary zero extensions.
llvm-svn: 225192
Rafael Espindola [Mon, 5 Jan 2015 18:48:18 +0000 (18:48 +0000)]
Make this test a bit stricter.
The first function is named __cxx_global_var_init, which is a substring of
the following functions @__cxx_global_var_init(1,2,3,etc).
llvm-svn: 225191
Rafael Espindola [Mon, 5 Jan 2015 18:19:35 +0000 (18:19 +0000)]
Disable warnings in this test.
This makes it a lot easier to read the output from FileCheck when it fails.
llvm-svn: 225190
Hal Finkel [Mon, 5 Jan 2015 18:09:06 +0000 (18:09 +0000)]
[PowerPC] Remove zexts after byte-swapping loads
lhbrx and lwbrx not only load their data with byte swapping, but also clear the
upper 32 bits (at least). As a result, they can be added to the PPCISelDAGToDAG
peephole optimization as frontier instructions for the removal of unnecessary
zero extensions.
llvm-svn: 225189
Colin LeMahieu [Mon, 5 Jan 2015 18:08:21 +0000 (18:08 +0000)]
[Hexagon] Adding round reg/imm and bitsplit instructions.
llvm-svn: 225188
Dan Albert [Mon, 5 Jan 2015 18:07:36 +0000 (18:07 +0000)]
Make the Unwinder -Werror clean.
Mostly just format string fixes.
Tested clean on arm, x86, and x86_64 Linux.
llvm-svn: 225187
Saleem Abdulrasool [Mon, 5 Jan 2015 17:56:32 +0000 (17:56 +0000)]
SymbolRewriter: use iplist::splice
The swap implementation for iplist is currently unsupported. Simply splice the
old list into place, which achieves the same purpose. This is needed in order
to thread the -frewrite-map-file frontend option correctly. NFC.
llvm-svn: 225186
Saleem Abdulrasool [Mon, 5 Jan 2015 17:56:29 +0000 (17:56 +0000)]
SymbolRewriter: 80-column
Wrap a couple of lines. NFC.
llvm-svn: 225185
Vince Harron [Mon, 5 Jan 2015 17:49:23 +0000 (17:49 +0000)]
fix cross compilation to 32 bit arm targets
llvm-svn: 225184
Ahmed Bougacha [Mon, 5 Jan 2015 17:10:26 +0000 (17:10 +0000)]
[AArch64] Improve codegen of store lane instructions by avoiding GPR usage.
We used to generate code similar to:
umov.b w8, v0[2]
strb w8, [x0, x1]
because the STR*ro* patterns were preferred to ST1*.
Instead, we can avoid going through GPRs, and generate:
add x8, x0, x1
st1.b { v0 }[2], [x8]
This patch increases the ST1* AddedComplexity to achieve that.
rdar://
16372710
Differential Revision: http://reviews.llvm.org/D6202
llvm-svn: 225183
Samuel Antao [Mon, 5 Jan 2015 17:07:42 +0000 (17:07 +0000)]
Fix clash of gcc toolchains in driver regression tests.
For some regression tests the path to the right toolchain is specified using the -sysroot switch. However, if clang was configured with a custom gcc toolchain (either by using GCC_INSTALL_PREFIX in cmake or the equivalent configure command), the path to the custom gcc toolchain path takes precedence to the one specified by sysroot. This causes several regression tests to fail as they will be using an unexpected path. This patch fixes this issue by adding --gcc-toolchain='' to all tests that rely on that. The empty string causes the driver to pick the path from sysroot instead.
llvm-svn: 225182
Ahmed Bougacha [Mon, 5 Jan 2015 17:02:28 +0000 (17:02 +0000)]
[AArch64] Improve codegen of store lane 0 instructions by directly storing the subregister.
For 0-lane stores, we used to generate code similar to:
fmov w8, s0
str w8, [x0, x1, lsl #2]
instead of:
str s0, [x0, x1, lsl #2]
To correct that: for store lane 0 patterns, directly match to STR <subreg>0.
Byte-sized instructions don't have the special case for a 0 index,
because FPR8s are defined to have untyped content.
rdar://
16372710
Differential Revision: http://reviews.llvm.org/D6772
llvm-svn: 225181
Samuel Benzaquen [Mon, 5 Jan 2015 15:26:42 +0000 (15:26 +0000)]
Fix dangling pointer in isDerivedFrom.
Summary:
Replace usage of StringRef with std::string in AST_MATCHER* generated
matchers to make sure they keep their own copy of the string.
The value could be a temporary and it causes the pointer to be dangling
by the time the matcher is executed.
Reviewers: klimek
Subscribers: klimek, cfe-commits
Differential Revision: http://reviews.llvm.org/D6843
llvm-svn: 225180
NAKAMURA Takumi [Mon, 5 Jan 2015 14:18:04 +0000 (14:18 +0000)]
llvm/test/lit.cfg: have_ld_plugin_support(): Use decode() for stdout.
llvm-svn: 225171
NAKAMURA Takumi [Mon, 5 Jan 2015 14:06:14 +0000 (14:06 +0000)]
clang/CMakeLists.txt: Introduce LLVM_SHLIB_OUTPUT_INTDIR also here, or plugins tests might fail.
llvm-svn: 225170
Karthik Bhat [Mon, 5 Jan 2015 13:57:59 +0000 (13:57 +0000)]
Select lower fsub,fabs pattern to fabd on AArch64
This patch lowers patterns such as-
fsub v0.4s, v0.4s, v1.4s
fabs v0.4s, v0.4s
to
fabd v0.4s, v0.4s, v1.4s
on AArch64.
Review: http://reviews.llvm.org/D6791
llvm-svn: 225169
Rafael Espindola [Mon, 5 Jan 2015 13:44:59 +0000 (13:44 +0000)]
Fix formatting. NFC.
llvm-svn: 225168
Charlie Turner [Mon, 5 Jan 2015 13:26:37 +0000 (13:26 +0000)]
Parse Tag_compatibility correctly.
Tag_compatibility takes two arguments, but before this patch it would
erroneously accept just one, it now produces an error in that case.
Change-Id: I530f918587620d0d5dfebf639944d6083871ef7d
llvm-svn: 225167
Charlie Turner [Mon, 5 Jan 2015 13:12:17 +0000 (13:12 +0000)]
Emit the build attribute Tag_conformance.
Claim conformance to version 2.09 of the ARM ABI.
This build attribute must be emitted first amongst the build attributes when
written to an object file. This is to simplify conformance detection by
consumers.
Change-Id: If9eddcfc416bc9ad6e5cc8cdcb05d0031af7657e
llvm-svn: 225166
Karthik Bhat [Mon, 5 Jan 2015 13:11:07 +0000 (13:11 +0000)]
Select lower sub,abs pattern to sabd on AArch64
This patch lowers patterns such as-
sub v0.4s, v0.4s, v1.4s
abs v0.4s, v0.4s
to
sabd v0.4s, v0.4s, v1.4s
on AArch64.
Review: http://reviews.llvm.org/D6781
llvm-svn: 225165
Michael Kuperstein [Mon, 5 Jan 2015 12:34:01 +0000 (12:34 +0000)]
Fix broken test from r225159.
llvm-svn: 225164
Chandler Carruth [Mon, 5 Jan 2015 12:32:11 +0000 (12:32 +0000)]
[PM] Don't run the machinery of invalidating all the analysis passes
when all are being preserved.
We want to short-circuit this for a couple of reasons. One, I don't
really want passes to grow a dependency on actually receiving their
invalidate call when they've been preserved. I'm thinking about removing
this entirely. But more importantly, preserving everything is likely to
be the common case in a lot of scenarios, and it would be really good to
bypass all of the invalidation and preservation machinery there.
Avoiding calling N opaque functions to try to invalidate things that are
by definition still valid seems important. =]
This wasn't really inpsired by much other than seeing the spam in the
logging for analyses, but it seems better ot get it checked in rather
than forgetting about it.
llvm-svn: 225163
Chandler Carruth [Mon, 5 Jan 2015 12:21:44 +0000 (12:21 +0000)]
[PM] Add names and debug logging for analysis passes to the new pass
manager.
This starts to allow us to test analyses more easily, but it's really
only the beginning. Some of the code here is still untestable without
manual changes to create analysis passes, but I wanted to factor it into
a small of chunks as possible.
Next up in order to be able to test things are, in no particular order:
- No-op analyses passes so we don't have to use real ones to exercise
the pass maneger itself.
- Automatic way of generating dummy passes that require an analysis be
run, including a variant that calls a 'print' method on a pass to make
it even easier to print out the results of an analysis.
- Dummy passes that invalidate all analyses for their IR unit so we can
test invalidation and re-runs.
- Automatic way to print each analysis pass as it is re-run.
- Automatic but optional verification of analysis passes everywhere
possible.
I'm not claiming I'll get to all of these immediately, but that's what
is in the pipeline at some stage. I'm fleshing out exactly what I need
and what to prioritize by working on converting analyses and then trying
to test the conversion. =]
llvm-svn: 225162
Daniel Jasper [Mon, 5 Jan 2015 10:33:39 +0000 (10:33 +0000)]
clang-format: [Java] Fix incorrect detection of cast.
After:
return (a instanceof List<?>) ?
aaaaaaaaaaaaaaaaaaaaaaa(
aaaaaaaaaaaaaaaaaaaaa)
:
aaaaaaaaaaaaaaaaaaaaaaa;
After:
return (a instanceof List<?>)
?
aaaaaaaaaaaaaaaaaaaaaaa(
aaaaaaaaaaaaaaaaaaaaa)
:
aaaaaaaaaaaaaaaaaaaaaaa;
llvm-svn: 225161
Craig Topper [Mon, 5 Jan 2015 10:15:49 +0000 (10:15 +0000)]
Replace several 'assert(false' with 'llvm_unreachable' or fold a condition into the assert.
llvm-svn: 225160
Jiangning Liu [Mon, 5 Jan 2015 10:08:58 +0000 (10:08 +0000)]
Fixed a bug in memory dependence checking module of loop vectorization. The following loop should not be vectorized with current algorithm.
{code}
// loop body
... = a[i] (1)
... = a[i+1] (2)
.......
a[i+1] = .... (3)
a[i] = ... (4)
{code}
The algorithm tries to collect memory access candidates from AliasSetTracker, and then check memory dependences one another. The memory accesses are unique in AliasSetTracker, and a single memory access in AliasSetTracker may map to multiple entries in AccessAnalysis, which could cover both 'read' and 'write'. Originally the algorithm only checked 'write' entry in Accesses if only 'write' exists. This is incorrect and the consequence is it ignored all read access, and finally some RAW and WAR dependence are missed.
For the case given above, if we ignore two reads, the dependence between (1) and (3) would not be able to be captured, and finally this loop will be incorrectly vectorized.
The fix simply inserts a new loop to find all entries in Accesses. Since it will skip most of all other memory accesses by checking the Value pointer at the very beginning of the loop, it should not increase compile-time visibly.
llvm-svn: 225159
Michael Gottesman [Mon, 5 Jan 2015 08:55:19 +0000 (08:55 +0000)]
Convert SmallMapVector from a class to a struct.
llvm-svn: 225158
Craig Topper [Mon, 5 Jan 2015 08:19:12 +0000 (08:19 +0000)]
[X86] Remove the predicates from the register forms of the 2-byte inc and dec instructions. Remove the 32-bit mode only versions that existed for the disassembler. Move the patterns out of the instructions so they can still be qualified with predicates.
llvm-svn: 225157
Craig Topper [Mon, 5 Jan 2015 08:19:10 +0000 (08:19 +0000)]
[X86] Simplify code a little by just summing flags instead of conditionally incrementing. NFC
llvm-svn: 225156
Craig Topper [Mon, 5 Jan 2015 08:19:07 +0000 (08:19 +0000)]
[X86] Remove unnecessary redeclaration of a variable with the same assignment as the beginning of the function. NFC.
llvm-svn: 225155
Craig Topper [Mon, 5 Jan 2015 08:19:05 +0000 (08:19 +0000)]
[X86] Remove a strange fixme referring to a hack that doesn't seem to exist since the code is in a comment. Can't figure out what the body of the 'if' was supposed to be anyway.
llvm-svn: 225154
Craig Topper [Mon, 5 Jan 2015 08:19:03 +0000 (08:19 +0000)]
[x86] Reduce text duplication for similar operand class declarations in tablegen instruction info. No functional change intended.
llvm-svn: 225153
Craig Topper [Mon, 5 Jan 2015 08:18:59 +0000 (08:18 +0000)]
[X86] Fix the immediate size to match the address size in the operand types for the move to/from absolute memory instructions.
llvm-svn: 225152
Craig Topper [Mon, 5 Jan 2015 08:18:52 +0000 (08:18 +0000)]
[X86] Remove unused operand type from disassembler handling. NFC
llvm-svn: 225151
Hal Finkel [Mon, 5 Jan 2015 05:24:42 +0000 (05:24 +0000)]
[PowerPC] Enable speculation of cttz/ctlz
PPC has an instruction for ctlz with defined zero behavior, and our lowering of
cttz (provided by DAGCombine) is also efficient and branchless, so speculating
these makes sense.
llvm-svn: 225150
Chandler Carruth [Mon, 5 Jan 2015 04:17:53 +0000 (04:17 +0000)]
[SROA] Apply a somewhat heavy and unpleasant hammer to fix PR22093, an
assert out of the new pre-splitting in SROA.
This fix makes the code do what was originally intended -- when we have
a store of a load both dealing in the same alloca, we force them to both
be pre-split with identical offsets. This is really quite hard to do
because we can keep discovering problems as we go along. We have to
track every load over the current alloca which for any resaon becomes
invalid for pre-splitting, and go back to remove all stores of those
loads. I've included a couple of test cases derived from PR22093 that
cover the different ways this can happen. While that PR only really
triggered the first of these two, its the same fundamental issue.
The other challenge here is documented in a FIXME now. We end up being
quite a bit more aggressive for pre-splitting when loads and stores
don't refer to the same alloca. This aggressiveness comes at the cost of
introducing potentially redundant loads. It isn't clear that this is the
right balance. It might be considerably better to require that we only
do pre-splitting when we can presplit every load and store involved in
the entire operation. That would give more consistent if conservative
results. Unfortunately, it requires a non-trivial change to the actual
pre-splitting operation in order to correctly handle cases where we end
up pre-splitting stores out-of-order. And it isn't 100% clear that this
is the right direction, although I'm starting to suspect that it is.
llvm-svn: 225149
Hal Finkel [Mon, 5 Jan 2015 04:05:21 +0000 (04:05 +0000)]
[LangRef] Correct a typo
llvm-svn: 225148
Hal Finkel [Mon, 5 Jan 2015 03:41:38 +0000 (03:41 +0000)]
[PowerPC] Materialize i64 constants using rotation with masking
r225135 added the ability to materialize i64 constants using rotations in order
to reduce the instruction count. Sometimes we can use a rotation only with some
extra masking, so that we take advantage of the fact that generating a bunch of
extra higher-order 1 bits is easy using li/lis.
llvm-svn: 225147
Chandler Carruth [Mon, 5 Jan 2015 03:03:31 +0000 (03:03 +0000)]
[PM] Cleanup a place where I forgot to update the header guards when
renaming a file from AssumptionTracker.h to AssumptionCache.h.
Thanks to Philip Reames for noticing and pointing it out in code review!
llvm-svn: 225146
Chandler Carruth [Mon, 5 Jan 2015 02:47:05 +0000 (02:47 +0000)]
[PM] Switch the new pass manager to use a reference-based API for IR
units.
This was debated back and forth a bunch, but using references is now
clearly cleaner. Of all the code written using pointers thus far, in
only one place did it really make more sense to have a pointer. In most
cases, this just removes immediate dereferencing from the code. I think
it is much better to get errors on null IR units earlier, potentially
at compile time, than to delay it.
Most notably, the legacy pass manager uses references for its routines
and so as more and more code works with both, the use of pointers was
likely to become really annoying. I noticed this when I ported the
domtree analysis over and wrote the entire thing with references only to
have it fail to compile. =/ It seemed better to switch now than to
delay. We can, of course, revisit this is we learn that references are
really problematic in the API.
llvm-svn: 225145
Chandler Carruth [Mon, 5 Jan 2015 00:08:53 +0000 (00:08 +0000)]
[PM] Wire up support for explicitly running the verifier pass.
The required functionality has been there for some time, but I never
managed to actually wire it into the command line registry of passes.
Let's do that.
llvm-svn: 225144
Chandler Carruth [Sun, 4 Jan 2015 23:13:57 +0000 (23:13 +0000)]
[PM] Cleanup a const_cast and other machinery left over in this code
from before I removed thet non-const use of the function.
The unused variable that held the const_cast was already kindly removed
by Michael.
llvm-svn: 225143
Daniel Jasper [Sun, 4 Jan 2015 20:40:51 +0000 (20:40 +0000)]
clang-format: [Java] Fix incorrect recognition of annonymous classes.
Before:
someFunction(new Runnable() { public void run() { System.out.println(42);
}
});
After:
someFunction(new Runnable() {
public void run() {
System.out.println(42);
}
});
llvm-svn: 225142
Daniel Jasper [Sun, 4 Jan 2015 20:40:45 +0000 (20:40 +0000)]
clang-format: [Java] Change a few flags for Google's Java style.
No tests added as all of these are already tested separately.
llvm-svn: 225141
Nico Weber [Sun, 4 Jan 2015 20:32:12 +0000 (20:32 +0000)]
Remove an assert that's not true on invalid code.
r185773 added an assert that checked that a CXXUnresolvedConstructExpr either
has a valid rparen, or exactly one argument. This doesn't have to be true for
invalid inputs. Convert the assert to an if, and add a test for this case.
Found by SLi's afl bot.
llvm-svn: 225140
Saleem Abdulrasool [Sun, 4 Jan 2015 20:26:45 +0000 (20:26 +0000)]
PECOFF: adjust the entry point on ARM NT
ARM NT assumes a purely THUMB execution, and as such requires that the address
of entry point is adjusted to indicate a thumb entry point. Unconditionally
adjust the AddressOfEntryPoint in the PE header for PE/COFF ARM as we only
support ARM NT at the moment.
llvm-svn: 225139
Simon Pilgrim [Sun, 4 Jan 2015 19:08:03 +0000 (19:08 +0000)]
[X86][SSE] Added vector packing test for pr12412
llvm-svn: 225138
Simon Pilgrim [Sun, 4 Jan 2015 17:52:00 +0000 (17:52 +0000)]
[X86][SSE] Added vector integer truncation tests - based off pr15524
llvm-svn: 225137
Joerg Sonnenberger [Sun, 4 Jan 2015 16:38:20 +0000 (16:38 +0000)]
Typo.
llvm-svn: 225136
Hal Finkel [Sun, 4 Jan 2015 15:43:55 +0000 (15:43 +0000)]
[PowerPC] Materialize i64 constants using rotation
Materializing full 64-bit constants on PPC64 can be expensive, requiring up to
5 instructions depending on the locations of the non-zero bits. Sometimes
materializing a rotated constant, and then applying the inverse rotation, requires
fewer instructions than the direct method. If so, do that instead.
In r225132, I added support for forming constants using bit inversion. In
effect, this reverts that commit and replaces it with rotation support. The bit
inversion is useful for turning constants that are mostly ones into ones that
are mostly zeros (thus enabling a more-efficient shift-based materialization),
but the same effect can be obtained by using negative constants and a rotate,
and that is at least as efficient, if not more.
llvm-svn: 225135
Yaron Keren [Sun, 4 Jan 2015 13:48:30 +0000 (13:48 +0000)]
Fix default image name to 'a.exe' on Windows, instead 'a.out'.
This applies to mingw as clang-cl already has its own logic for the filename.
llvm-svn: 225134
Michael Kuperstein [Sun, 4 Jan 2015 13:35:44 +0000 (13:35 +0000)]
Fix unused variable warning for non-asserts builds. NFC.
llvm-svn: 225133
Hal Finkel [Sun, 4 Jan 2015 12:35:03 +0000 (12:35 +0000)]
[PowerPC] Materialize i64 constants using bit inversion
Materializing full 64-bit constants on PPC64 can be expensive, requiring up to
5 instructions depending on the locations of the non-zero bits. Sometimes
materializing the bit-reversed constant, and then flipping the bits, requires
fewer instructions than the direct method. If so, do that instead.
llvm-svn: 225132
Chandler Carruth [Sun, 4 Jan 2015 12:03:27 +0000 (12:03 +0000)]
[PM] Split the AssumptionTracker immutable pass into two separate APIs:
a cache of assumptions for a single function, and an immutable pass that
manages those caches.
The motivation for this change is two fold. Immutable analyses are
really hacks around the current pass manager design and don't exist in
the new design. This is usually OK, but it requires that the core logic
of an immutable pass be reasonably partitioned off from the pass logic.
This change does precisely that. As a consequence it also paves the way
for the *many* utility functions that deal in the assumptions to live in
both pass manager worlds by creating an separate non-pass object with
its own independent API that they all rely on. Now, the only bits of the
system that deal with the actual pass mechanics are those that actually
need to deal with the pass mechanics.
Once this separation is made, several simplifications become pretty
obvious in the assumption cache itself. Rather than using a set and
callback value handles, it can just be a vector of weak value handles.
The callers can easily skip the handles that are null, and eventually we
can wrap all of this up behind a filter iterator.
For now, this adds boiler plate to the various passes, but this kind of
boiler plate will end up making it possible to port these passes to the
new pass manager, and so it will end up factored away pretty reasonably.
llvm-svn: 225131
Daniel Jasper [Sun, 4 Jan 2015 09:11:17 +0000 (09:11 +0000)]
clang-format: Re-enable comment re-indentation for Java/JS.
This was broken by r224120.
llvm-svn: 225130
Nico Weber [Sun, 4 Jan 2015 08:07:54 +0000 (08:07 +0000)]
Fix indentation. No behavior change.
llvm-svn: 225129
Nico Weber [Sun, 4 Jan 2015 07:59:35 +0000 (07:59 +0000)]
Wrap to 80 columns, no behavior change.
llvm-svn: 225128
David Majnemer [Sun, 4 Jan 2015 07:36:02 +0000 (07:36 +0000)]
InstCombine: match can find ConstantExprs, don't assume we have a Value
We assumed the output of a match was a Value, this would cause us to
assert because we would fail a cast<>. Instead, use a helper in the
Operator family to hide the distinction between Value and Constant.
This fixes PR22087.
llvm-svn: 225127
David Majnemer [Sun, 4 Jan 2015 07:06:53 +0000 (07:06 +0000)]
ValueTracking: ComputeNumSignBits should tolerate misshapen phi nodes
PHI nodes can have zero operands in the middle of a transform. It is
expected that utilities in Analysis don't freak out when this happens.
Note that it is considered invalid to allow these misshapen phi nodes to
make it to another pass.
This fixes PR22086.
llvm-svn: 225126
Nico Weber [Sun, 4 Jan 2015 05:29:21 +0000 (05:29 +0000)]
Document that GetTypeForDeclarator() cannot return a null type.
Also add a few asserts for this. The existing code assumes this in a bunch
of places already (see e.g. the assert at the top of ParseTypedefDecl(), and
there are many unchecked calls on the result of GetTypeForDeclarator()), and
from looking through the code this should always be true from what I can tell.
This allows removing ASTContext::getNullTypeSourceInfo() too as that's now
unused.
No behavior change intended.
llvm-svn: 225125
Nico Weber [Sun, 4 Jan 2015 04:53:10 +0000 (04:53 +0000)]
Crash less enthusiasticially on _Atomic or __restrict__ on invalid types.
Many places in Sema cannot handle isNull() types. This is fine, because in
most places the type building code recovers by falling back to IntTy. In
GetFullTypeForDeclarator(), this is done at the end of the getNumTypeObjects()
loop body. This function calls BuildQualifiedType() before this fallback is
done though, so it explicitly needs to check for isNull() types.
llvm-svn: 225124
Lang Hames [Sun, 4 Jan 2015 01:20:55 +0000 (01:20 +0000)]
[APFloat][ADT] Fix sign handling logic for FMA results that truncate to zero.
This patch adds a check for underflow when truncating results back to lower
precision at the end of an FMA. The additional sign handling logic in
APFloat::fusedMultiplyAdd should only be performed when the result of the
addition step of the FMA (in full precision) is exactly zero, not when the
result underflows to zero.
Unit tests for this case and related signed zero FMA results are included.
Fixes <rdar://problem/
18925551>.
llvm-svn: 225123
Nico Weber [Sun, 4 Jan 2015 00:47:22 +0000 (00:47 +0000)]
Wrap to 80 columns, no behavior change.
llvm-svn: 225122
David Majnemer [Sun, 4 Jan 2015 00:44:32 +0000 (00:44 +0000)]
AST: Remove overzealous assertion from IsModifiable
It's reasonable to ask if an l-value with class type is modifiable.
llvm-svn: 225121
Saleem Abdulrasool [Sat, 3 Jan 2015 21:35:09 +0000 (21:35 +0000)]
llvm-readobj: add support to dump COFF export tables
This enhances llvm-readobj to print out the COFF export table, similar to the
-coff-import option. This is useful for testing in lld.
llvm-svn: 225120
Saleem Abdulrasool [Sat, 3 Jan 2015 21:35:00 +0000 (21:35 +0000)]
ARM: permit tail calls to weak externals on COFF
Weak externals are resolved statically, so we can actually generate the tail
call on PE/COFF targets without breaking the requirements. It is questionable
whether we want to propagate the current behaviour for MachO as the requirements
are part of the ARM ELF specifications, and it seems that prior to the SVN
r215890, we would have tail'ed the call. For now, be conservative and only
permit it on PE/COFF where the call will always be fully resolved.
llvm-svn: 225119
David Majnemer [Sat, 3 Jan 2015 19:41:00 +0000 (19:41 +0000)]
Parse: __attribute__((keyword)) shouldn't error
Weird constructs like __attribute__((inline)) or
__attibute__((typename)) should result in warnings, not errors.
llvm-svn: 225118
Hal Finkel [Sat, 3 Jan 2015 17:58:24 +0000 (17:58 +0000)]
[PowerPC/BlockPlacement] Allow target to provide a per-loop alignment preference
The existing code provided for specifying a global loop alignment preference.
However, the preferred loop alignment might depend on the loop itself. For
recent POWER cores, loops between 5 and 8 instructions should have 32-byte
alignment (while the others are better with 16-byte alignment) so that the
entire loop will fit in one i-cache line.
To support this, getPrefLoopAlignment has been made virtual, and can be
provided with an optional MachineLoop* so the target can inspect the loop
before answering the query. The default behavior, as before, is to return the
value set with setPrefLoopAlignment. MachineBlockPlacement now queries the
target for each loop instead of only once per function. There should be no
functional change for other targets.
llvm-svn: 225117
Aaron Ballman [Sat, 3 Jan 2015 17:00:12 +0000 (17:00 +0000)]
Volatile reads are side-effecting operations, but in the general case of access through a volatile-qualified type, we're not certain of the underlying object's side-effects on access.
Treat volatile accesses as "maybe" instead of "definite" side effects for the purposes of warning on evaluations in an unevaluated context. No longer diagnose on idiomatic code like:
int * volatile v;
(void)sizeof(*v);
llvm-svn: 225116
Hal Finkel [Sat, 3 Jan 2015 14:58:25 +0000 (14:58 +0000)]
[PowerPC] Use 16-byte alignment for modern cores for functions/loops
Most modern PowerPC cores prefer that functions and loops start on
16-byte-aligned boundaries (*), so instruct block placement, etc. to make this
happen. The branch selector has also been adjusted so account for the extra
nops that might now be inserted before loop headers.
(*) Some cores actually prefer other alignments for small loops, but that will
be addressed in a follow-up commit.
llvm-svn: 225115
Craig Topper [Sat, 3 Jan 2015 08:16:34 +0000 (08:16 +0000)]
Minor cleanup to all the switches after MatchInstructionImpl in all the AsmParsers.
Make sure they all have llvm_unreachable on the default path out of the switch. Remove unnecessary "default: break". Remove a 'return' after unreachable. Fix some indentation.
llvm-svn: 225114
Craig Topper [Sat, 3 Jan 2015 08:16:29 +0000 (08:16 +0000)]
Fix some formatting in tablegen output.
llvm-svn: 225113
Craig Topper [Sat, 3 Jan 2015 08:16:14 +0000 (08:16 +0000)]
Replace some 'unreachable' comments with llvm_unreachable.
llvm-svn: 225112
Alexey Samsonov [Sat, 3 Jan 2015 04:29:12 +0000 (04:29 +0000)]
Remove TSAN_DEBUG in favor of SANITIZER_DEBUG.
llvm-svn: 225111
Alexey Samsonov [Sat, 3 Jan 2015 04:29:05 +0000 (04:29 +0000)]
Replace DCHECK with DCHECK_LE where appropriate.
llvm-svn: 225110
David Majnemer [Sat, 3 Jan 2015 02:33:25 +0000 (02:33 +0000)]
ValueTracking: Make computeKnownBits for Arguments a little more clear
We would sometimes leave the out-param APInts untouched while going
through computeKnownBits. While I don't know of a way to trigger a bug
involving this in practice, it goes against the overall design of
computeKnownBits.
Found via code inspection.
llvm-svn: 225109
Kostya Serebryany [Sat, 3 Jan 2015 02:07:58 +0000 (02:07 +0000)]
[asan/tracing] extend the test a bit more, simplify the tracing code, add a guard page to trace array, fix the trace IDs before dumping
llvm-svn: 225108
Kostya Serebryany [Sat, 3 Jan 2015 01:41:11 +0000 (01:41 +0000)]
[asan] extend coverage-tracing.cc test
llvm-svn: 225107
Hal Finkel [Sat, 3 Jan 2015 01:16:37 +0000 (01:16 +0000)]
[PowerPC] Add support for the CMPB instruction
Newer POWER cores, and the A2, support the cmpb instruction. This instruction
compares its operands, treating each of the 8 bytes in the GPRs separately,
returning a 'mask' result of 0 (for false) or -1 (for true) in each byte.
Code generation support is added, in the form of a PPCISelDAGToDAG
DAG-preprocessing routine, that recognizes patterns close to what the
instruction computes (either exactly, or related by a constant masking
operation), and generates the cmpb instruction (along with any necessary
constant masking operation). This can be expanded if use cases arise.
llvm-svn: 225106
Saleem Abdulrasool [Sat, 3 Jan 2015 00:57:14 +0000 (00:57 +0000)]
test: correct PE/COFF tests to build under MSVC mode
This adjusts the inputs to be compatible with armv7-windows-msvc as well as
armv7-windows-itanium. NFC.
llvm-svn: 225105
Saleem Abdulrasool [Sat, 3 Jan 2015 00:57:10 +0000 (00:57 +0000)]
ReaderWriter: adjust ARM target addresses for exec
ARM NT assumes a THUMB only environment. As such, any address that is detected
as residing in an executable section is adjusted to have its bottom bit set to
indicate THUMB in case of a mode exchange.
Although the testing here seems insufficient (missing the negative cases) the
existing test cases for the IMAGE_REL_ARM_{ADDR32,MOV32T} are relevant as they
ensure that we do not incorrectly set the bit.
llvm-svn: 225104
Kostya Serebryany [Sat, 3 Jan 2015 00:54:43 +0000 (00:54 +0000)]
[asan] simplify the tracing code, make it use the same guard variables as coverage
llvm-svn: 225103
Rafael Espindola [Sat, 3 Jan 2015 00:28:47 +0000 (00:28 +0000)]
Remove -Werror from test.
It is not needed since we FileCheck for the warning and -Werror itself can end up
unused.
llvm-svn: 225102
Rafael Espindola [Sat, 3 Jan 2015 00:06:04 +0000 (00:06 +0000)]
Really don't warn about -flto/fno-lto :-(
This should fix the last bots.
llvm-svn: 225100
Craig Topper [Sat, 3 Jan 2015 00:00:20 +0000 (00:00 +0000)]
[X86] Disassembler support for move to/from %rax with a 32-bit memory offset is REX.W and AdSize prefix are both present.
llvm-svn: 225099
Craig Topper [Sat, 3 Jan 2015 00:00:14 +0000 (00:00 +0000)]
[X86] Use 32-bit sign extended immediate for 64-bit LOCK_ArithBinOp with sign extended immediate.
llvm-svn: 225098
Chandler Carruth [Fri, 2 Jan 2015 23:34:39 +0000 (23:34 +0000)]
[PM] Add proper documentation for the ModulePassManager and
FunctionPassManager. These never got documented, likely due to the
clutter of this header file. This fixes another problem people noticed
when they started trying to use the new pass manager.
I've also used this to document the aspirational constraints I would
like to hold passes to. I don't really have a better place to document
such things at this point, but eventually will probably create a proper
.rst file and page for the LLVM pass infrastructure that carries such
high-level concerns.
llvm-svn: 225097
Chandler Carruth [Fri, 2 Jan 2015 23:25:16 +0000 (23:25 +0000)]
[PM] Actually include the correct file name. Sorry for the breakage.
llvm-svn: 225096
Rafael Espindola [Fri, 2 Jan 2015 23:23:52 +0000 (23:23 +0000)]
Also avoid warning on -flto/-fno-lto on linux.
On OS X a .s file is preprocessed, it is not on linux, which is why the warning was still
showing up on linux but not OS X.
llvm-svn: 225095
Chandler Carruth [Fri, 2 Jan 2015 23:16:59 +0000 (23:16 +0000)]
[PM] Lift the majority of the template boilerplate used to implement the
concept-based polymorphism in the pass manager to a separate header.
I got feedback from someone reading the code and trying to use it that
this was really making it hard to dive in and start using these APIs and
that makes a lot of sense.
This only requires a moderate amount of gymnastics to separate in this
way, namely rinsing the PreservedAnalysis object through a template
argument in a few places so that it is dependent and we only examine it
on instantiation.
llvm-svn: 225094
Rafael Espindola [Fri, 2 Jan 2015 22:56:15 +0000 (22:56 +0000)]
Don't warn on unused -fno-lto.
It is somewhat common for CFLAGS to be used with .s files. We were
already ignoring -flto. This patch just does the same for -fno-lto.
llvm-svn: 225093
Chandler Carruth [Fri, 2 Jan 2015 22:51:44 +0000 (22:51 +0000)]
[PM] Fix some formatting where clang-format has improved recently.
llvm-svn: 225092
David Blaikie [Fri, 2 Jan 2015 22:07:26 +0000 (22:07 +0000)]
DebugInfo: Provide a less subtle way to set the debug location of simple ret instructions
un-XFAILing the test XFAIL'd in r225086 after it regressed in r225083.
llvm-svn: 225090
Saleem Abdulrasool [Fri, 2 Jan 2015 21:47:33 +0000 (21:47 +0000)]
Driver: honour the clang-cl behaviour on ARM as well
Unfortunately, MSVC does not indicate to the driver what target is being used.
This means that we cannot correctly select the target architecture for the
clang_rt component. This breaks down when targeting windows with the clang
driver as opposed to the clang-cl driver. This should fix the native ARM
buildbot tests.
llvm-svn: 225089
Alexey Samsonov [Fri, 2 Jan 2015 21:28:37 +0000 (21:28 +0000)]
Revert "Revert r224736: "[Sanitizer] Make CommonFlags immutable after initialization.""
Fix test failures by introducing CommonFlags::CopyFrom() to make sure
compiler doesn't insert memcpy() calls into runtime code.
Original commit message:
Protect CommonFlags singleton by adding const qualifier to
common_flags() accessor. The only ways to modify the flags are
SetCommonFlagsDefaults(), ParseCommonFlagsFromString() and
OverrideCommonFlags() functions, which are only supposed to be
called during initialization.
llvm-svn: 225088
Saleem Abdulrasool [Fri, 2 Jan 2015 20:00:55 +0000 (20:00 +0000)]
Driver: reuse getCompilerRT in place of addSanitizerRTWindows
The logic for addSanitizerRTWindows was performing the same logical operation as
getCompilerRT, which was previously fully generalised for Linux and Windows.
This avoids having a duplication of the logic for building up the name of a
clang_rt component. This change does move the current limitation for Windows
into getArchNameForCompilerRTLib, where it is assumed that the architecture for
Windows is always i386.
llvm-svn: 225087