similar to: DebugInfo, Metadata usage

I'll ask again that question. Thank you Adrian, I've looked through IR Verifier and it helps me to understand some parts of retrieving metadata and debug info. But , after that, I've faced with another problem: Original Code: std::wcout << L"WCHAR_HELLOWORLD" << std::endl;b IR Code: @.str.2 = private unnamed_addr constant [17 x i32] [i32 87, i32 67, i32 72,

Back in 2009 there was some discussion of the practicality of supporting char sizes greater than 8-bit: http://lists.cs.uiuc.edu/pipermail/cfe-dev/2009-September/thread.html#6349 http://lists.cs.uiuc.edu/pipermail/llvmdev/2009-September/thread.html#26025 with the consensus seemingly being "quite doable, please get a good patch and submit". However the current code appears (to my

> It's definitely doable, but I'd be worried about the maintenance burden. Yes, that is a problem. We are currently not allowed to reveal our target (which has 16-bit bytes, and registers with non-power-of-two bit widths) fully, and therefore not able to submit it upstream. One idea we have toyed with is to create a simple "dummy" version of our target, just to be able

Hi llvm-dev, Our code base has a ancient copy of llvm (ver 3.5.1), and it uses the LLVM code gen for some domain-specific language. The previous dev left a global lock around the usage of LLVM code gen stating that because LLVM code gen can only be accessed single-threaded it needs to be protected with this global lock. But now this lock has caused some perf issues as we pretty much lose

Below is attached a full IR module that can reproduce this issue, but the part to notice is this: %Foo96Bits = type <{ i24, i24, i24, i24 }> define internal fastcc i16 @main.0.1() unnamed_addr #2 !dbg !113 { Entry: %value = alloca %Foo96Bits, align 1 %b = alloca i24, align 4 %0 = bitcast %Foo96Bits* %value to i8*, !dbg !129 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* bitcast

Thank you Johannes, I looked it up and it seems that we're creating one LLVMContext per compilation "unit", not sure if that matters. i.e. there's no single globally shared LLVMContext object. Is LLVMContext *the* concurrency isolation (or unit) here? On Wed, Apr 3, 2019 at 6:34 PM Doerfert, Johannes <jdoerfert at anl.gov> wrote: > Do you use one llvm context or one

using `opt --print-after-all -O3` I see that EarlyCSE is interpreting the call to `ceil` and constant fold: *** IR Dump After Early CSE *** ; Function Attrs: nobuiltin nounwind define i1 @do_test() #2 { Entry: %0 = call fastcc float @ceil(float 0.000000e+00) #6 %1 = call fastcc float @ceil32(float 0.000000e+00) #6 %2 = fcmp fast oeq float 0.000000e+00, %1 ret i1 %2 } So just running `opt

I just reported this bug: https://bugs.llvm.org/show_bug.cgi?id=35314 This very simple IR is causing infinite recursion in llvm::DwarfUnit::getOrCreateTypeDIE in llvm 5.0.0. Is there a workaround? Is anyone willing to save me a recompile and check if this is fixed in 5.0.1 or trunk? `clang -c test.ll` repros the issue. ; ModuleID = 'test' source_filename = "test" target

On Mon, Jun 19, 2017 at 12:06 PM, Mehdi AMINI <joker.eph at gmail.com> wrote: > Hi, > > 2017-06-19 8:45 GMT-07:00 Andrew Kelley via llvm-dev < > llvm-dev at lists.llvm.org>: > >> Greetings, >> >> I have a Zig implementation of ceil which is emitted into LLVM IR like >> this: >> >> ; Function Attrs: nobuiltin nounwind >> define

Hello everyone, I am trying to "parse" a part of LLVM IR. More exactly, from @.str = private unnamed_addr constant [3 x i8] c"DS\00", section "llvm.metadata" I want to get "DS". It is the single place in the whole bytecode from where I can get it. I have : ... Value *VV = cast<Value>(LD100->getOperand(1)->getOperand(0));

Dump the IR before newgvn and run through opt -newgvn. It should crash. I'm not familiar with your frontend but you might want to use -mllvm -opt-bisect-limit. On Sep 17, 2017 1:06 PM, "Andrew Kelley" <superjoe30 at gmail.com> wrote: Valgrind is strictly better than address sanitizer, is that right? It runs valgrind-clean: [nix-shell:~/dev/zig/build-llvm5-debug]$ valgrind

On Wed, Sep 23, 2009 at 2:27 PM, Talin <viridia at gmail.com> wrote: > On Wed, Sep 23, 2009 at 1:51 PM, Dan Gohman <gohman at apple.com> wrote: >> >> On Sep 22, 2009, at 4:49 PM, Talin wrote: >>> >>> // Calculate the size of the specified LLVM type. >>> Constant * DebugInfoBuilder::getSize(const Type * type) { >>>    Constant * one =

When zig updated to llvm 5 we started hitting this assertion: zig: /home/andy/downloads/llvm-project/llvm/include/llvm/Support/Casting.h:106: static bool llvm::isa_impl_cl<To, const From*>::doit(const From*) [with To = llvm::Instruction; From = llvm::Value]: Assertion `Val && "isa<> used on a null pointer"' failed. I wonder if however this was caused by an

Can you please open a bug on bugzilla and attach the ir testcase? Your fix doesn't look right (just hiding the assertion failure) On Sep 17, 2017 10:45 AM, "Andrew Kelley via llvm-dev" < llvm-dev at lists.llvm.org> wrote: > What do you think about this patch? > > --- a/llvm/lib/Transforms/Scalar/NewGVN.cpp > +++ b/llvm/lib/Transforms/Scalar/NewGVN.cpp > @@

Here is a patch that does just that. On Wed, Sep 23, 2009 at 3:38 PM, Devang Patel <devang.patel at gmail.com>wrote: > On Wed, Sep 23, 2009 at 2:27 PM, Talin <viridia at gmail.com> wrote: > > On Wed, Sep 23, 2009 at 1:51 PM, Dan Gohman <gohman at apple.com> wrote: > >> > >> On Sep 22, 2009, at 4:49 PM, Talin wrote: > >>> > >>>

Am 20.01.2012 um 18:12 schrieb Devang Patel: > > On Jan 19, 2012, at 10:12 AM, Christian Jacobs wrote: > >> Hello, >> I need to know how I get the LLVM::IDScope object of an instruction. >> >> My program contains: >> call void (...)* @commit(), !dbg !16 >> >> !16 = metadata !{i32 16, i32 5, metadata !8, null} >> >> !8 = metadata

So, 90% of the time I've seen this, it was memory corruption, usually use after free. I know I fixed one after 5.0 branched. You should compile with address sanitizer enabled, and I suspect you will find the issue quicky. If not, we really need ir that reproduces it. On Sun, Sep 17, 2017, 12:27 PM Andrew Kelley via llvm-dev < llvm-dev at lists.llvm.org> wrote: > I think I forgot to

I'm trying to get the values in a static global array. What is the best way to go about doing this? Once I have the pointer (Ie GlobalVariable *GV = dyn_cast<GlobalVariable>(itr))? I basically just want to check for ConstantDataSequential and print out the values. Thanks. -------------- next part -------------- An HTML attachment was scrubbed... URL:

Forgot cc'ing the list... -------- Original Message -------- Subject: Re: [LLVMdev] Getting Static Array Content Date: Fri, 28 Sep 2012 08:55:51 +0200 From: Ivan Llopard <ivanllopard at gmail.com> To: Ryan Taylor <ryta1203 at gmail.com> Hi Ryan, On 28/09/2012 02:07, Ryan Taylor wrote: > I'm trying to get the values in a static global array. What is the > best

Ivan, Yes, I had used these for some other values. Looks like this is a constant type that I wasn't accounting for. Thanks. On Thu, Sep 27, 2012 at 11:55 PM, Ivan Llopard <ivanllopard at gmail.com>wrote: > Hi Ryan, > > > On 28/09/2012 02:07, Ryan Taylor wrote: > > I'm trying to get the values in a static global array. What is the best > way to go about