These operations were already used in eh-frame registration, and are likely to
be used in other runtime registrations, so this commit moves them into a header
where they can be re-used.
llvm-svn: 359950
This saves us some unnecessary copies.
If the inputs to a G_SELECT are floating point, we should use fcsel rather than
csel.
Changes here are...
- Teach selectCopy about s1-to-s1 copies across register banks.
- AArch64RegisterBankInfo about G_SELECT in general.
- Teach the instruction selector about the FCSEL instructions.
Also add two tests:
- select-select.mir to show that we get the expected FCSEL
- regbank-select.mir (unfortunately named) to show the register banks on
G_SELECT are properly preserved
And update fast-isel-select.ll to show that we do the same thing as other
instruction selectors in these cases.
llvm-svn: 359940
Not all versions of git support git rev-parse --git-common-dir. Rather than erorr or print any kind of
useful error, they just print back '--git-common-dir' instead of a directory. The git-llvm script
ends up taking this '--git-common-dir' as a diretory name to use.
Not sure exactly what happens after that, but the end result is that the 'git llvm push' ends up
looking like it pushed your commits, but really did nothing.
This patch makes the script detect the bogus directory name for --git-common-dir and falls back to using --git-dir instead.
llvm-svn: 359939
Summary:
This change enables `cl::Grouping` for short options --
options with names of a single character. This is consistent with GNU
getopt behavior.
Reviewers: rnk, MaskRay
Reviewed By: MaskRay
Subscribers: thopre, cfe-commits, MaskRay, rupprecht, hiraditya, llvm-commits
Tags: #llvm, #clang
Differential Revision: https://reviews.llvm.org/D61270
llvm-svn: 359917
Summary:
By default, `parseCommandLineOptions()` will accept either a
`-` or `--` prefix for long options -- options with names longer than
a single character.
While this change does not affect behavior, it will be helpful with a
subsequent change that requires long options use the `--` prefix.
Reviewers: rnk, thopre
Reviewed By: thopre
Subscribers: thopre, cfe-commits, hiraditya, llvm-commits
Tags: #llvm, #clang
Differential Revision: https://reviews.llvm.org/D61269
llvm-svn: 359909
Fix the values of BPF_X and BPF_K according to BPFInstrFormats.td:
"
def BPF_K : BPFSrcType<0x0>;
def BPF_X : BPFSrcType<0x1>;
"
The right value for BPF_X is 0x1, and the right value for BPF_K is 0x0.
Signed-off-by: Wang YanQing <udknight@gmail.com>
Differential Revision: https://reviews.llvm.org/D61512
llvm-svn: 359904
The x/y/z suffix is needed to disambiguate the memory form in at&t syntax since no xmm/ymm/zmm register is mentioned.
But we should also allow it for the register and broadcast forms where its not needed for consistency. This matches gas.
The printing code will still only use the suffix for the memory form where it is needed.
llvm-svn: 359903
Summary: This patch was previously applied in r231221, and reverted in
r231254 because it broke self-hosting. It was subsequently fixed and
reapplied in r231274. Unfortunately, making the `parser<T>` classes
final prevents inheritance which makes it impossible to implement
custom parsers.
Reverting r231221 restores the ability to customize parsers.
Reviewers: dblaikie
Reviewed By: dblaikie
Subscribers: craig.topper, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D60955
llvm-svn: 359902
The VOP3 form should always be the preferred selection form to be
shrunk later.
The r600 sub test needs to be split out because it asserts on the
arguments in the new test during the calling convention lowering.
llvm-svn: 359899
This was broken if the original operand was killed. The kill flag
would appear on both instructions, and fail the verifier. Keep the
kill flag, but remove the operands from the old instruction. This has
an added benefit of really reducing the use count for future folds.
Ideally the pass would be structured more like what PeepholeOptimizer
does to avoid this hack to avoid breaking instruction iterators.
llvm-svn: 359891
When a fold of an immediate into a sub/subrev required shrinking the
instruction, the wrong VOP2 opcode was used. This was using the VOP2
equivalent of the original instruction, not the commuted instruction
with the inverted opcode.
llvm-svn: 359883
Using/updating a dominator tree to match math overflow patterns may be very
expensive in compile-time (because of the way CGP uses a DT), so just handle
the single-block case.
Also, we were restarting the iterator loops when doing the overflow intrinsic
transforms by marking the dominator tree for update. That was done to prevent
iterating over a removed instruction. But we can postpone the deletion using
the existing "RemovedInsts" structure, and that means we don't need to update
the DT.
See post-commit thread for rL354298 for more details:
http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20190422/646276.html
Differential Revision: https://reviews.llvm.org/D61075
llvm-svn: 359879
Patch adds support for dumping of file headers with llvm-readobj. XCOFF
object files are added to test dumping a well formed file, and dumping
both negative timestamps and negative symbol counts, both of which are
allowed in the XCOFF definition.
Differential Revision: https://reviews.llvm.org/D60878
llvm-svn: 359878
This is the second part of the commit fixing PR38917 (hoisting
partitially redundant machine instruction). Most of PRE (partitial
redundancy elimination) and CSE work is done on LLVM IR, but some of
redundancy arises during DAG legalization. Machine CSE is not enough
to deal with it. This simple PRE implementation works a little bit
intricately: it passes before CSE, looking for partitial redundancy
and transforming it to fully redundancy, anticipating that the next
CSE step will eliminate this created redundancy. If CSE doesn't
eliminate this, than created instruction will remain dead and eliminated
later by Remove Dead Machine Instructions pass.
The third part of the commit is supposed to refactor MachineCSE,
to make it more clear and to merge MachinePRE with MachineCSE,
so one need no rely on further Remove Dead pass to clear instrs
not eliminated by CSE.
First step: https://reviews.llvm.org/D54839
Fixes llvm.org/PR38917
Reviewers: RKSimon
Subscribers: hfinkel, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D56772
llvm-svn: 359870
