Displaying 11 results from an estimated 11 matches for "l281".
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281
2016 Jul 29
0
PIC preferred too strongly, even at CodeModel::Large?
...h `llc -code-model=large`. It produces:
>
> movslq (%rax,%rdi,4), %rsi
> addq %rax, %rsi
> jmpq *%rsi
>
Ah; I guess I actually should have spotted that.
See
https://github.com/llvm-mirror/llvm/blob/f79c57a412cf8ba35884c1d4e011e07baad334d9/lib/CodeGen/SelectionDAG/TargetLowering.cpp#L281
. I think you can just force it to use EK_BlockAddress for the large code
model.
> >> Second, is it okay to
> >> silently fold into Reloc::PIC_ in this case and leave the user with
> >> sporadic crashes?
> >
> >
> > Large code model and PIC should be...
2016 Jul 20
2
package installation fails when symlink of same name exists
...it would
rather be important to *keep* the symlink, and install to
whereever the symlink is pointing, no ?
> It could happen before creating the directory, e.g. here:
> https://github.com/wch/r-source/blob/62f5acbdbdf36e1fc618510312125d1677d79941/src/library/tools/R/install.R#L277-L281
> One thing that was a bit surprising to me -- R does not remove a
> pre-existing package installation if it exists (when installing from
> source), it merely installs over it, so files / artifacts from a
> previous package installation could be left over after installi...
2016 Jul 19
2
package installation fails when symlink of same name exists
...already
existed at the 'instdir' path, and if it existed and was a symlink, R
would remove that symlink before install. It could happen before
creating the directory, e.g. here:
https://github.com/wch/r-source/blob/62f5acbdbdf36e1fc618510312125d1677d79941/src/library/tools/R/install.R#L277-L281
One thing that was a bit surprising to me -- R does not remove a
pre-existing package installation if it exists (when installing from
source), it merely installs over it, so files / artifacts from a
previous package installation could be left over after installing a
new package. It seems this is n...
2016 Jul 29
2
PIC preferred too strongly, even at CodeModel::Large?
Eli Friedman wrote:
> On Thu, Jul 28, 2016 at 6:13 PM, Ramkumar Ramachandra via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
>> We were just debugging a sporadic crash the other day, when we noticed
>> that RIP-relative addressing was being used in a JumpTable, even when
>> code and data were well over 4G apart. This is confusing, because we
>> picked
2016 May 17
2
Can I specify qcow2 preallocation method with virt-builder?
When creating qcow2 images using virt-builder, is there a way to specify
the qcow2 preallocation, as possible with qemu-img create -o
preallocation=metada , for example?
TIA,
Y.
2016 May 17
0
Re: Can I specify qcow2 preallocation method with virt-builder?
...g create -o
> preallocation=metada , for example?
No .. but .. it does default to preallocation=metadata provided that
the output format is qcow2:
https://github.com/libguestfs/libguestfs/blob/master/builder/builder.ml#L582-L585
https://github.com/libguestfs/libguestfs/blob/master/src/create.c#L281-L295
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-df lists disk usage of guests without needing to install any
software inside the virtual machine. Supports Linux and Windows.
h...
2020 Jul 09
2
Understand alias-analysis results
...g to 0x563faa6c6260"?
If alias sets have been merged, you'll get the attached node forwarding
to the root node; note the comment for `getForwardedTarget` making a
reference to union-find:
https://github.com/llvm/llvm-project/blob/release/10.x/llvm/include/llvm/Analysis/AliasSetTracker.h#L281
(with "merge" corresponding to the union-find collapsing for "union",
https://en.wikipedia.org/wiki/Disjoint-set_data_structure#Union).
You can see how `AliasSet::mergeSetIn` (called, e.g., by
`AliasSetTracker::mergeAliasSetsForPointer`) sets up forwarding for
`AS.Forward`:...
2015 Dec 14
5
[Bug 2517] New: GitHub version doesn't include ChangeLog
https://bugzilla.mindrot.org/show_bug.cgi?id=2517
Bug ID: 2517
Summary: GitHub version doesn't include ChangeLog
Product: Portable OpenSSH
Version: 6.8p1
Hardware: 68k
OS: Mac OS X
Status: NEW
Severity: enhancement
Priority: P5
Component: Documentation
Assignee:
2016 Jul 20
0
package installation fails when symlink of same name exists
...inked directory would definitely
be nice :-) I just thought the request might be out of scope.
> > It could happen before creating the directory, e.g. here:
>
> > https://github.com/wch/r-source/blob/62f5acbdbdf36e1fc618510312125d1677d79941/src/library/tools/R/install.R#L277-L281
>
> > One thing that was a bit surprising to me -- R does not remove a
> > pre-existing package installation if it exists (when installing from
> > source), it merely installs over it, so files / artifacts from a
> > previous package installation could be...
2020 Jul 10
2
Understand alias-analysis results
...If alias sets have been merged, you'll get the attached node forwarding
> to the root node; note the comment for `getForwardedTarget` making a
> reference to union-find:
> https://github.com/llvm/llvm-project/blob/release/10.x/llvm/include/llvm/Analysis/AliasSetTracker.h#L281
> (with "merge" corresponding to the union-find collapsing for "union",
> https://en.wikipedia.org/wiki/Disjoint-set_data_structure#Union).
>
> You can see how `AliasSet::mergeSetIn` (called, e.g., by
> `AliasSetTracker::mergeAliasSetsForPointer`)...
2020 Jul 09
2
Understand alias-analysis results
Hey Matt,
That's awesome. Thank you very much for all the information and
clarification! Just a few follow up questions. Could you kindly shed some
lights on it? Thank you!
1. I tried to tweak the code in the following way:
- Clang [-> LLVM-IR]: https://llvm.godbolt.org/z/n9rGrs
- [LLVM-IR ->] opt: https://llvm.godbolt.org/z/Uc6h5Y
And i note that the outputs are:
Alias sets for