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Hi David If you look at line https://github.com/llvm/llvm-project/blob/master/llvm/lib/IR/Verifier.cpp#L1160 there is IR verification which asserts that only in case of `spFlags = DISPFlagDefinition`, the compilation unit (`unit` field) should be present. Otherwise, it should *not* be present. In the crash case, `spFlags = DISPFlagOptimized`. So, I guess, `unit` field should *not* be present,

I am bit confused - `unit` must be present for definitions, and `optimized ` is also a `definition`, so, `unit` must be present for `optimized ` too. Am I right? Mahesha On Sun, May 31, 2020 at 10:14 PM David Blaikie <dblaikie at gmail.com> wrote: > definition and optimized are orthogonal (a function could be both, or > neither) - one says this DISubprogram describes a function

Hi- Here is the simple C++ function: ----------- void foo() { } ----------- Let's say, above function is compiled to generate LLVM IR with -g flag using the command line `clang++ -g -O0 -S -emit-llvm foo.cpp`, we get below IR ----------- ; ModuleID = 'foo.cpp' source_filename = "foo.cpp" target datalayout =

Let's forget about my malformed IR if it is adding additional confusion here. I mentioned it here to ease the conversation, but if it is causing confusion rather than making the discussion flow easier, then we better ignore it. The whole triggering point for this email initiative is - one of the applications is crashing with the stack trace that I mentioned earlier. The crash is during the

Nothing really needs to be done on Unix, because to my knowledge Unix doesn't differentiate between text and binary on stdin/stdout. ~Michael -----Original Message----- From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] On Behalf Of Reid Spencer Sent: Tuesday, May 23, 2006 11:25 AM To: LLVM Developers Mailing List Subject: RE: [LLVMdev] Binary output to cout on

>>> In this particular case, since the def of %x in the caller is also an argument, we could propagate it to the def directly, e.g. define i1 @foo(i32* nonnull %x) { %y.i = load i32, i32* %x ; inlined, still known to be nonnull >>> For propagation of non-nullity to the argument, don't you need value propagation or backward all dataflow analysis? IE. define i1 @foo(i32*

On Fri, Dec 16, 2016 at 11:49 AM, Philip Reames <listmail at philipreames.com> wrote: > > > On 12/16/2016 11:37 AM, Michael Kuperstein wrote: > > Calling an instruction a "source" is basically another way to say "we > can't dataflow through this". > > What I'm trying to say is that this is not really a property of the > instruction