Windows on ARM does not conform to AEABI. However, memset would be emitted
using the AEABI signature, resulting in inverted parameters. Handle this
special case appropriately.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207943 91177308-0d34-0410-b5e6-96231b3b80d8
Add handling for FK_SecRel_4 (4-byte section relative relocations). These are
used by the generation of DWARF debug information (the abbrevations use section
relative relocations). This will also be used in generation of CodeView line
tables.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207941 91177308-0d34-0410-b5e6-96231b3b80d8
Otherwise we use the same threshold as for complete unrolling, which is
way too high. This made us unroll any loop smaller than 150 instructions
by 8 times, but only if someone specified -march=core2 or better,
which happens to be the default on darwin.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207940 91177308-0d34-0410-b5e6-96231b3b80d8
When can't assume a vectorized tree is rooted in an instruction. The IRBuilder
could have constant folded it. When we rebuild the build_vector (the series of
InsertElement instructions) use the last original InsertElement instruction. The
vectorized tree root is guaranteed to be before it.
Also, we can't assume that the n-th InsertElement inserts the n-th element into
a vector.
This reverts r207746 which reverted the revert of the revert of r205018 or so.
Fixes the test case in PR19621.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207939 91177308-0d34-0410-b5e6-96231b3b80d8
Both MinGW and cygwin (i686) construct export directives without the global
leader prefix. This is mostly due to the fact that they use GNU ld which does
not correctly handle the export directive. This apparently has been been broken
for a while. However, this was recently reported as being broken by
mingwandroid and diorcety of the msys2 project.
Remove the global leader prefix if targeting MinGW or cygwin, otherwise, retain
the global leader prefix. Add an explicit test for cygwin's behaviour of export
directives.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207926 91177308-0d34-0410-b5e6-96231b3b80d8
The fix itself is fairly simple: move getAccessVariant to MCValue so that we
replace the old weak expression evaluation with the far more general
EvaluateAsRelocatable.
This then requires that EvaluateAsRelocatable stop when it finds a non
trivial reference kind. And that in turn requires the ELF writer to look
harder for weak references.
Last but not least, this found a case where we were being bug by bug
compatible with gas and accepting an invalid input. I reported pr19647
to track it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207920 91177308-0d34-0410-b5e6-96231b3b80d8
See PR19608 for the details but to summarize it was easy to modify the .ll
file to get the desired def-use ordering.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207887 91177308-0d34-0410-b5e6-96231b3b80d8
This makes it *really* easy to debug leaks FYI:
ASAN_OPTIONS=detect_leaks=1 ./bin/llvm-lit -v <path to test>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207874 91177308-0d34-0410-b5e6-96231b3b80d8
Reading line tables in llvm-cov was pretty broken, but would happen to
work as long as no line in the table was 0. It's not clear to me
whether a line of zero *should* show up in these tables, but deciding
to read a string in the middle of the line table is certainly the
wrong thing to do if it does.
I've also added some comments, as trying to figure out what this block
of code was doing was fairly unpleasant.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207866 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
* Updated the documentation
* Added a test for >2 arguments
* Added a check for the lexical concatenation
* Made the existing test a bit stricter.
Reviewers: t.p.northover
Reviewed By: t.p.northover
Subscribers: t.p.northover, llvm-commits
Differential Revision: http://reviews.llvm.org/D3485
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207865 91177308-0d34-0410-b5e6-96231b3b80d8
This moves most of GlobalOpt's constructor optimization
code out of GlobalOpt into Transforms/Utils/CDtorUtils.{h,cpp}. The
public interface is a single function OptimizeGlobalCtorsList() that
takes a predicate returning which constructors to remove.
GlobalOpt calls this with a function that statically evaluates all
constructors, just like it did before. This part of the change is
behavior-preserving.
Also add a call to this from GlobalDCE with a filter that removes global
constructors that contain a "ret" instruction and nothing else – this
fixes PR19590.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207856 91177308-0d34-0410-b5e6-96231b3b80d8
address to AnalyzeLoadFromClobberingLoad. This fixes a bug in load-PRE where
PRE is applied to a load that is not partially redundant.
<rdar://problem/16638765>.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207853 91177308-0d34-0410-b5e6-96231b3b80d8
.file records are supposed to have a section identifier of 65534
(IMAGE_SCN_DEBUG) rather than 0. This is spelt out clearly within the PE/COFF
specification. Fix this minor oversight with the implementation for support for
.file records.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207851 91177308-0d34-0410-b5e6-96231b3b80d8
v2: move code to AMDGPUISelLowering.cpp
squash with tests (both EG and SI)
Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207845 91177308-0d34-0410-b5e6-96231b3b80d8
While post-indexed LD1/ST1 instructions do exist for vector loads,
this patch makes use of the more flexible addressing-modes in LDR/STR
instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207838 91177308-0d34-0410-b5e6-96231b3b80d8
Given the following C code llvm currently generates suboptimal code for
x86-64:
__m128 bss4( const __m128 *ptr, size_t i, size_t j )
{
float f = ptr[i][j];
return (__m128) { f, f, f, f };
}
=================================================
define <4 x float> @_Z4bss4PKDv4_fmm(<4 x float>* nocapture readonly %ptr, i64 %i, i64 %j) #0 {
%a1 = getelementptr inbounds <4 x float>* %ptr, i64 %i
%a2 = load <4 x float>* %a1, align 16, !tbaa !1
%a3 = trunc i64 %j to i32
%a4 = extractelement <4 x float> %a2, i32 %a3
%a5 = insertelement <4 x float> undef, float %a4, i32 0
%a6 = insertelement <4 x float> %a5, float %a4, i32 1
%a7 = insertelement <4 x float> %a6, float %a4, i32 2
%a8 = insertelement <4 x float> %a7, float %a4, i32 3
ret <4 x float> %a8
}
=================================================
shlq $4, %rsi
addq %rdi, %rsi
movslq %edx, %rax
vbroadcastss (%rsi,%rax,4), %xmm0
retq
=================================================
The movslq is uneeded, but is present because of the trunc to i32 and then
sext back to i64 that the backend adds for vbroadcastss.
We can't remove it because it changes the meaning. The IR that clang
generates is already suboptimal. What clang really should emit is:
%a4 = extractelement <4 x float> %a2, i64 %j
This patch makes that legal. A separate patch will teach clang to do it.
Differential Revision: http://reviews.llvm.org/D3519
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207801 91177308-0d34-0410-b5e6-96231b3b80d8
This creates a lot of core infrastructure in which to add, with little
effort, quite a bit more to mips fast-isel
Test Plan: simplestore.ll
Reviewers: dsanders
Reviewed By: dsanders
Differential Revision: http://reviews.llvm.org/D3527
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207790 91177308-0d34-0410-b5e6-96231b3b80d8
This matches gas' behaviour on COFF.
I think that this yak is now sufficiently shaved for aliases with offset
to work.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207786 91177308-0d34-0410-b5e6-96231b3b80d8
This optimization merges the common part of a group of GEPs, so we can compute
each pointer address by adding a simple offset to the common part.
The optimization is currently only enabled for the NVPTX backend, where it has
a large payoff on some benchmarks.
Review: http://reviews.llvm.org/D3462
Patch by Jingyue Wu.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207783 91177308-0d34-0410-b5e6-96231b3b80d8
This the LLVM portion that will allow Clang and other frontends to emit
typedefs of void by providing a null type for the typedef's underlying
type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207777 91177308-0d34-0410-b5e6-96231b3b80d8
Use i32 instead of specifying SReg_32. When this is
the pseudo INDIRECT_BASE_ADDR, this would give a bogus
verifier error.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207770 91177308-0d34-0410-b5e6-96231b3b80d8
This fixes pr19147.
There are a few more related issues to fix, but the testcase in the bug now
passes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207763 91177308-0d34-0410-b5e6-96231b3b80d8
We currently force symbols to be globals in .thumb_set. The intent
seems to be that given
.thumb_set foo, bar
we emit an undefined symbol to bar if it is never defined. The side
effect is that we mark bar as global, even if it is defined, which gas
does not.
Producing an undefined reference to bar is a general difference from MC and gas.
For example, given
a = b
gas will produce an undefined reference to b, MC will not. I would be surprised
if any code depends on this, but it it does, we should fix the general
difference, not special case .thumb_set.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207757 91177308-0d34-0410-b5e6-96231b3b80d8
The canonical form of the BFM instruction is always one of the more explicit
extract or insert operations, which makes reading output much easier.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207752 91177308-0d34-0410-b5e6-96231b3b80d8
=[
Turns out that this was the root cause of PR19621. We found a crasher
only recently (likely due to improvements elsewhere in the SLP
vectorizer) but the reduced test case failed all the way back to here.
I've confirmed that reverting this patch both fixes the reduced test
case in PR19621 and the actual source file that led to it, so it seems
to really be rooted here. I've replied to the commit thread with
discussion of my (feeble) attempts to debug this. Didn't make it very
far, so reverting now that we have a good test case so that things can
get back to healthy while the debugging carries on.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207746 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
There are two functional changes:
1) The directive is not expanded for the ASM->ASM code path.
2) If PIC is not set, there's no expansion for the ASM->OBJ code path (same behaviour as GAS).
Reviewers: dsanders
Reviewed By: dsanders
Differential Revision: http://reviews.llvm.org/D3482
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207741 91177308-0d34-0410-b5e6-96231b3b80d8
GAS doesn't actually accept these particular cases.
The mnemonic without the trailing 'v' still supports two-operand aliases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207740 91177308-0d34-0410-b5e6-96231b3b80d8
This makes the coff writer compute the correct symbol value for the test in
pr19147. The section is still incorrect, that will be fixed in a followup patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207728 91177308-0d34-0410-b5e6-96231b3b80d8
Breaks GDB buildbot
(http://lab.llvm.org:8011/builders/clang-x86_64-ubuntu-gdb-75/builds/14517)
GCC emits DW_AT_object_pointer /everywhere/ (declaration, abstract
definition, inlined subroutine), but it looks like GCC relies on it
being somewhere other than the declaration, at least. I'll experiment
further & can hopefully still remove it from the inlined_subroutine.
This reverts commit r207705.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207719 91177308-0d34-0410-b5e6-96231b3b80d8
They just don't need to be there - they're inherited from the abstract
definition. In theory I would like them to be inherited from the
declaration, but the DWARF standard doesn't quite say that... we can
probably do it anyway but I'm less confident about that so I'll leave it
for a separate commit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207717 91177308-0d34-0410-b5e6-96231b3b80d8
This effectively reverts r164326, but adds some comments and
justification and ensures we /don't/ emit the DW_AT_object_pointer on
the (abstract and concrete) definitions. (while still preserving it on
standalone definitions involving ObjC Blocks)
This does increase the size of member function declarations from 7 to 11
bytes, unfortunately, but still seems like the Right Thing to do so that
callers that see only the declaration still have the information about
the object pointer. That said, I don't know what, if any, DWARF
consumers don't have a heuristic to guess this in the case of normal
C++ member functions - perhaps we can remove it entirely.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207705 91177308-0d34-0410-b5e6-96231b3b80d8
