similar to: [RFC][ARM] Add support for embedded position-independent code (ROPI/RWPI)

Hi all, I'm trying to see if I can use a global static base register instead of PC-relative addressing. I see that I can easily reserve R9 in the ARM Subtarget, but this doesn't let me use it. I found a TODO in ARMAsmPrinter.cpp that refers to this: // TODO: We currently only support either reserving the register, or treating // it as another callee-saved register, but not as SB or a

Hi, Sam. I think that it's a fair comparison. Keep in mind that the GP is only used to reach global variables of local scope and the GOT, where the address of global variables of global scope reside. This model assumes that the distance between the GP and the global data area, GOT and local scope variables is defined at link time. __ Evandro Menezes ◊ SiFive ◊ Austin, TX > On Mar

I am running R 2.1.1 on a Mac g5 under Mac OS 10.4.2. I have an xyplot with a single conditioning variable (8 levels) . Here is the code for the conditioning variable used in the formula argument of xyplot: factor( drugauthoryear, levels = c( 'bupicapogna1999', 'levobenhamou2003', 'ropicapogna1999',

Oh, I wasn’t really thinking about devices without an MMU where the addresses are physically separated. Makes sense. This reminds me of rwpi on ARM; it has a sort of similar scheme of referring to data indirectly through a pointer, but it also changes the ABI to keep the pointer in a reserved register. -Eli From: Evandro Menezes <evandro.menezes at sifive.com> Sent: Friday, March 20, 2020

Thank you for your reply Eli, I too was working with Carey on this feature, so please let me reply. On 12/21/18 8:05 PM, Friedman, Eli via llvm-dev wrote: > As a side-note, you might want to check that prologue/epilogue emission won't emit a PUSH/POP that refers to a register reserved this way; we sometimes add an "extra" register to align the stack. Yes, you are right.

It is wholly self-contained. It's code that has no references to anything beyond a set of pointers passed in as arguments to the function. This piece of code doesn't do any OS work at all. It is purely calling function pointers, doing math and allocating memory. On Mon, Jul 1, 2019 at 12:57 AM Jorg Brown <jorg.brown at gmail.com> wrote: > > Qs for you: > > The code that

Hi all, This is a RFC on support for Global Register Variables in the Arm backend. Whilst there has been some prior discussion about whether or not LLVM should (or even needs to) support global register variables, today there seems to be a good measure of support for this in both Clang+LLVM (although it is currently limited to SP). When most of this support landed there was some concern

I’ve had another look, and some of the failing tests don’t use temporary files, so I don’t think this is a case of tests having side-effects. Instead, I’ve noticed that in the build log (http://lab.llvm.org:8011/builders/llvm-clang-x86_64-expensive-checks-win/builds/6552/steps/build-unified-tree/logs/stdio), llvm-tblgen.exe is built (my patch modified it), but the table-generation steps of the

On Wednesday 02 July 2003 08:33, Brendan Cully wrote: > (I think this may have come up before and then gotten dropped.) > > libshout may need two additional API methods: libshout_init and > libshout_shutdown. > > libshout itself currently has no use for these functions, but they > would be used to call the init and shutdown hooks in the net > library. When this library is

Hi Oliver, Thanks for trying this. Could you file a different PR for each of the problem you found and reference the umbrella PR: http://llvm.org/PR35347? <http://llvm.org/PR35347?> Thanks, -Quentin > On Nov 17, 2017, at 8:17 AM, Oliver Stannard <oliver.stannard at arm.com> wrote: > > Hi Quentin, > > One more reproducer, this time with small (<64bit) values

To give an update here, we actually are not missing a mapping. The code complains because we are copying around a fp16 into a gpr32 and that shouldn’t be done with a copy (default mapping). I extended the repairing code to issue G_ANYEXT in those cases instead of asserting. However, now, I have to teach instruction select about those ANYEXT otherwise we’ll fallback in that case. But that’s a

Thanks all. Amara, could you take a look? > On Nov 20, 2017, at 3:06 AM, Oliver Stannard <oliver.stannard at arm.com> wrote: > > Hi Quentin, > > I’ve raised: > https://bugs.llvm.org/show_bug.cgi?id=35359 <https://bugs.llvm.org/show_bug.cgi?id=35359> > https://bugs.llvm.org/show_bug.cgi?id=35360 <https://bugs.llvm.org/show_bug.cgi?id=35360> >

[AMD Public Use] Hi Oliver, I get rid of the warnings by explicitly type-casting it to struct*, and still get similar results. ####################################################### struct P { float f1; float f2; float f3[3]; float f4; }; void foo(struct P* p1, struct P* p2) { p1->f2 = 1.2; p2->f1 = 3.7; } int callFoo() { struct P p; foo(&p,

Hi llvm-dev, I've uploaded a prototype patch at https://reviews.llvm.org/D70720 which adds a new feature to llvm-objdump: displaying the location (in registers/memory/etc) of source-level variables alongside the disassembly display. I've put a demo of the output at https://reviews.llvm.org/M2. I have two use-cases in mind for this: * Users reading the disassembly of compiled code. It

Hi Oliver, There would be no problem if both the Map and the Vector indeed contained (Key,Value) pairs. To save space, Map entries do not contain Value but instead an unsigned index into the Vector: /// The values are kept in a std::vector and the /// mapping is done with DenseMap from Keys to indexes in that vector. After an element is erased from the Vector all indices greater than the

Hey there everybody. I am new to the list, so bear with me if make mistakes :) I updated my Server from FC7 to FC9 and with it came Samba 3.2.0pre3-9.fc9 (heaven knows why it had to be a pre version). I reused my old config and noticed that displaying all hosts in my workgroup as well as authentication went from normal to awfully slow. Once the connection is established it is bearable, though

GCC-style inline assembly is notoriously hard to write correctly, because it is the user's responsibility to tell the compiler about the requirements of the assembly (inputs, output, modified registers, memory access), and getting this wrong results in silently generating incorrect code. This is also dependent on register allocation and scheduling decisions made by the compiler, so an inline

Salut, Je souhaiterai définir dans mon fichier environement.rb une variable qui puisse être récupéré dans mes controlleurs. Plus précisément je souahiterai initialiser une varible avec l''ip du serveur qui héberge l''appli et pouvoir la récupérer dans mes controlleurs. Je suis sur que c''est trés simple mais je n''ai pas trouvé l''info. Merci ! --

Have tracked down a fairly serious cause of memory leakage in wxRuby2. swig/fixdeleting.rb adds a hash mapping from pointer address to ruby VALUE in every director initialiser using GcMapPtrToValue. The problem is that being a value in this global hash means that every Wx::Bitmap (for example, and others) are always marked in ruby''s GC mark phase, so they are never collected until

On Mon, Mar 29, 2010 at 01:15:30PM +0100, Renato Golin wrote: > Hi All, > > Which implies no one was expecting a UnionType there... > > Also, if I generate the object code directly, llc fails too... > > Is there any plan to implement the union type? The work-around is quite ugly... Sorry to Renato for getting two copeis of this, I cocked up the reply first time. Anyway,