search for: l281

Displaying 11 results from an estimated 11 matches for "l281".

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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