search for: stringrefs

While porting LLDB over to StringRef, I am continuously running into difficulties caused by the fact that StringRef cannot be constructed from nullptr. So I wanted to see peoples' thoughts on removing this restriction from StringRef. To be clear, I'm only using LLDB as a motivating example, but I'm not requesting that it be done because LLDB is some kind of special case. If it is to

Hi On Windows 10 when using a debug build of LLVM 10, I get this assertion failure: Assertion failed: (KV.second.getFlags() & ~WeakFlags) == (I->second & ~WeakFlags) && "Resolving symbol with incorrect flags", file C:\work\github\llvm-10.0.0.src\lib\ExecutionEngine\Orc\Core.cpp, line 450 The same failure occurred in LLVM 9 too: Assertion failed: I->second ==

> On Sep 25, 2016, at 1:49 PM, Mehdi Amini via llvm-dev <llvm-dev at lists.llvm.org> wrote: > >> >> On Sep 25, 2016, at 9:10 AM, Zachary Turner via llvm-dev <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> wrote: >> >> While porting LLDB over to StringRef, I am continuously running into difficulties caused by the fact that

The pointer could only be null if the length is zero. If the length is zero, you shouldn't be loading it. Defaulting to null instead of "" is also a microoptimization. -Chris > On Sep 25, 2016, at 10:49 AM, Mehdi Amini via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > >> On Sep 25, 2016, at 9:10 AM, Zachary Turner via llvm-dev <llvm-dev at

...g_ref_literal`, so that the user writes `StringRef s[] = { LITERAL("a"), LITERAL("b") }; I'm not sure if that's better or worse than `StringRef s[] = { "a"_sr, "b"_sr };`, but at least it's greppable this way. 2) Don't allow global tables of StringRefs. On Mon, Nov 28, 2016 at 11:30 AM Mehdi Amini via llvm-dev < llvm-dev at lists.llvm.org> wrote: > On Nov 28, 2016, at 11:27 AM, David Blaikie <dblaikie at gmail.com> wrote: > > > > On Mon, Nov 28, 2016 at 11:01 AM Mehdi Amini <mehdi.amini at apple.com> > wrot...

llvm::sys::fs::make_absolute converts its first parameter (const Twine &current_directory) to StringRef p(path.data(), path.size()), and then passes that StringRef to several functions (path::has_root_directory, path::has_root_name, and path::append) that accept Twines as parameters. Since llvm::StringRef can implicitly convert to an llvm::Twine, p converts to a bunch of Twine temporaries. In

I'm copying some LLD code into my codebase like this: // workaround for LLD not exposing ability to convert .def to .lib #include <set> namespace lld { namespace coff { class SymbolBody; class StringChunk; struct Symbol; struct Export { StringRef Name; // N in /export:N or /export:E=N StringRef ExtName; // E in /export:E=N SymbolBody *Sym = nullptr; uint16_t Ordinal

For llvm-dwarfdump we need to handle relocations inside the debug info sections in order to successfully dump the dwarf info including strings. Nick sent out a partial patch that did this not too long ago and I've taken it and gone in a bit of a different direction, but kept the same basic architecture. In place of applying the relocations to the data we've read from disk I'm keeping

Just got clang from head and getting: ExprConstant.cpp: In function Obool TryEvaluateBuiltinNaN(clang::ASTContext&, clang::QualType, const clang::Expr*, bool, llvm::APFloat&)¹: ExprConstant.cpp:1578: error: no matching function for call to Ollvm::StringRef::getAsInteger(int, llvm::APInt&)¹ /home/neale/LLVM/llvm/include/llvm/ADT/StringRef.h:269: note: candidates are: bool

hacker cling wrote: > Hello all, > I was playing with LLVM pass. I changed the > lib/Transforms/Hello/Hello.cpp 's content to be my own pass. Then I make > install the pass and use an example test1.c to see whether it works or > not. When I run example using the following command: > clang -emit-llvm test1.c -c -o test1.bc > opt -load

Hi all, There is a desire to be able to create constexpr StringRefs to avoid static initializers for global tables of/containing StringRefs. Creating constexpr StringRefs isn't trivial as strlen isn't portably constexpr and std::char_traits<char>::length is only constexpr in C++17. Alp Toker tried to create constexpr StringRefs for strings literals...

On Wed, Jun 14, 2017 at 7:37 PM, Rui Ueyama <ruiu at google.com> wrote: > On Wed, Jun 14, 2017 at 4:24 PM, Andrew Kelley via llvm-dev < > llvm-dev at lists.llvm.org> wrote: > >> I'm copying some LLD code into my codebase like this: >> >> // workaround for LLD not exposing ability to convert .def to .lib >> >> #include <set> >>

Hello all, I was playing with LLVM pass. I changed the lib/Transforms/Hello/Hello.cpp 's content to be my own pass. Then I make install the pass and use an example test1.c to see whether it works or not. When I run example using the following command: clang -emit-llvm test1.c -c -o test1.bc opt -load ../build_llvm/Debug+Asserts/lib/LLVMHello.so -hello < test1.bc > /dev/null It

On 24 November 2016 at 15:04, Hal Finkel <hfinkel at anl.gov> wrote: >> Creating constexpr StringRefs isn't trivial as strlen isn't portably >> constexpr and std::char_traits<char>::length is only constexpr in >> C++17. > > Why don't we just create our own traits class that has a constexpr length, and then we can switch over to the standard one when we switch to...

Hello, Lately, I have been working on moving Debian & Ubuntu packages to a stage2 build. This means that, instead of shipping llvm-toolchain packages built with gcc, we are rebuilding everything a second time using the newly built clang. Now, when pushed to Debian, it caused some unexpected issues in particular with rust reported here:

On Jul 24, 2011, at 6:31 PM, David Blaikie wrote: >>> This keeps things simple & seems to be "good enough" to me, but we >>> could perhaps do better (at the very least, again, if we did do >>> better, we could go back & remove TwineString & again fix all the >>> places that fail to compile with whatever new hotness we invent) >>

Hi all (No idea if I have the correct audience. Please CC more people as needed). I have an UBSan failure in BumpPtrAllocatorImpl.Allocate. The problem is that lld requests that we StringRef::copy an empty string. This passes a length of 0 to a BumpPtrAllocator. The BumpPtrAllocator happened to not have anything allocated yet so the CurPtr is nullptr, but given that we need 0 space we think

I am wriitng an LLVM pass to insert instrumentation at certain points of the program. I want to pass the `StringRef` obtained from `getName()` as a parameter to a function `func(char* s)`. I can allocate some space on stack using `AllocaInst` to generate an `alloca` instruction. But, how can I copy the `StringRef` to the stack space? -- Thanks & Regards, Dipanjan -------------- next part

I'm attempting to do some amount of mass migration from const std::string& (& const char*) to StringRef. In doing so I stumbled across the fact that while StringRef has no op+ to speak of (well, it has += and I added a manual StringRef+std::string and std::string+StringRef for now - though I'm thinking perhaps they can be skipped in favor of Twine operations), Twine does provide a

I have ran under valgrind memcheck the process using libLLVM-2.9.so (rev.126022) and got several errors: ==24227== Invalid read of size 1 ==24227== at 0x40274C9: memcpy (mc_replace_strmem.c:497) ==24227== by 0x40D5B84: char* std::string::_S_construct<char const*>(char const*, char const*, std::allocator<char> const&, std::forward_iterator_tag) (in