Adding the initial files for adding MachO support to obj2yaml. Passing a MachO file will result in a new not_implemented error.
I will be implementing obj2yaml and yaml2obj for MachO in parallel so that one can be used to test the other.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269243 91177308-0d34-0410-b5e6-96231b3b80d8
Do not use getVRegDef() to print "the definition" of a vreg. If there
are multiple or none the function will fail.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269239 91177308-0d34-0410-b5e6-96231b3b80d8
It's very common to want to replace a node and then remove it since
it's dead, especially as we port backends from the SDNode *Select API
to the void Select one. This helper makes this sequence a bit less
verbose.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269236 91177308-0d34-0410-b5e6-96231b3b80d8
It's awkward to force callers of SelectNodeTo to figure out whether
the node was morphed or CSE'd. Update uses here instead of requiring
callers to (sometimes) do it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269235 91177308-0d34-0410-b5e6-96231b3b80d8
This fixes a debug assert on Windows from the new iterator
implementation added in r269059. The Windows std::vector iterator
operator== checks in debug mode that the containers being iterated over
are the same, which they may not be.
Fixed by checking that we are iterating over the same container before
comparing the container iterators.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269232 91177308-0d34-0410-b5e6-96231b3b80d8
For narrow stores (e.g., strb, srth) we know the upper bits of the register are
unused/not useful. In some cases we can use this information to eliminate
unnecessary instructions.
For example, without this patch we generate (from the 2nd test case):
ldr w8, [x0]
and w8, w8, #0xfff0
bfxil w8, w2, #16, #4
strh w8, [x1]
and after the patch the 'and' is removed:
ldr w8, [x0]
bfxil w8, w2, #16, #4
strh w8, [x1]
ret
During the lowering of the bitfield insert instruction the 'and' is eliminated
because we know the upper 16-bits that are masked off are unused and the lower
4-bits that are masked off are overwritten by the insert itself. Therefore, the
'and' is unnecessary.
Differential Revision: http://reviews.llvm.org/D20175
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269226 91177308-0d34-0410-b5e6-96231b3b80d8
Don't bother returning a result we don't use here. I've also renamed
this from selectGather to tryGather to better indicate that it may not
do anything.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269215 91177308-0d34-0410-b5e6-96231b3b80d8
SCEVExpander::replaceCongruentIVs assumes the backedge value of an
SCEV-analysable PHI to always be an instruction, when this is not
necessarily true. For now address this by bailing out of the
optimization if the backedge value of the PHI is a non-Instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269213 91177308-0d34-0410-b5e6-96231b3b80d8
`SCEVExpander::replaceCongruentIVs` bypasses `hoistIVInc` if both the
original and the isomorphic increments are PHI nodes. Doing this can
break SSA if the isomorphic increment is not dominated by the original
increment. Get rid of the bypass, and let `hoistIVInc` do the right
thing.
Fixes PR27232 (compile time crash/hang).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269212 91177308-0d34-0410-b5e6-96231b3b80d8
... for AddRec's in loops for which SCEV is unable to compute a max
tripcount. This is not a problem for "normal" loops[0] that don't have
guards or assumes, but helps in cases where we have guards or assumes in
the loop that can be used to constrain incoming values over the backedge.
This partially fixes PR27691 (we still don't handle the NUW case).
[0]: for "normal" loops, in the cases where we'd be able to prove
no-wrap via isKnownPredicate, we'd also be able to compute a max
tripcount.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269211 91177308-0d34-0410-b5e6-96231b3b80d8
DbgInfoIntrinsic::StripCast() is dead since r79977
The only function that creates Comdat objects seems to be in Module, and always creates them using the default constructor.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269204 91177308-0d34-0410-b5e6-96231b3b80d8
Equivalent GEP indices with different types are treated as different
indices altogether, leading to an incorrect AA result. Fix the issue
by comparing indices based on their values.
Thanks to Mikael Holmén for reporting the issue!
Differential Revision: http://reviews.llvm.org/D19935
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269197 91177308-0d34-0410-b5e6-96231b3b80d8
microMIPS has a special case that is not correctly implemented in LLVM. If we
have a symbol 'foo' which is equivalent to '.text+0x10'. The value of an
R_MICROMIPS_LO16 relocation using 'foo' is 'foo+0x11' and not 'foo+0x10'. The
in-place addend should therefore be 0x11.
Work around this by partially reverting the effect of r268900 by keeping the
symbol when the STO_MIPS_MICROMIPS flag is set. This fixes
SingleSource/Regression/C/PR640 for microMIPS.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269196 91177308-0d34-0410-b5e6-96231b3b80d8
When generating .cfi_offset instructions, make sure that the offset is
calculated with respect to the register used to define the CFA (which is
currently always FP+8).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269191 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
r268058 unintentionally made the retrieval of the current assembler temporary
unconditional. This was fine for the existing tests but it broke the cases
where the assembler temporary is not needed (N32/N64 or not PIC) and is
unavailable due to a '.set noat' directive.
This fixes FreeBSD's libc.
Reviewers: emaste, sdardis, seanbruno
Subscribers: dsanders, emaste, sdardis, llvm-commits
Differential Revision: http://reviews.llvm.org/D20093
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269179 91177308-0d34-0410-b5e6-96231b3b80d8
Having it be special is quite annoying for being able to just run
git-clang-format in patches that change it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269175 91177308-0d34-0410-b5e6-96231b3b80d8
Summary: When emitting comparison for fp16, in addition to promote the LHS and RHS to fp32, we need to change the VT as well.
Reviewers: t.p.northover
Subscribers: t.p.northover, aemerson, rengolin, llvm-commits
Differential Revision: http://reviews.llvm.org/D19922
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269151 91177308-0d34-0410-b5e6-96231b3b80d8
Use WeakAny linkage instead of LinkOnceAny, as the symbol can be removed with
LinkOnceAny in O2 (not referenced).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269146 91177308-0d34-0410-b5e6-96231b3b80d8
This is part of the work to have Select return void instead of an
SDNode *, which is in turn part of llvm.org/pr26808.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269144 91177308-0d34-0410-b5e6-96231b3b80d8
