[llvm-dev] Efficient Green Thread Context-Switching

[Eli Friedman via llvm-dev]

https://llvm.org/docs/ExceptionHandling.html .

-Eli

From: llvm-dev <llvm-dev-bounces at lists.llvm.org> On Behalf Of Joshua Thomas Wise via llvm-dev
Sent: Friday, March 27, 2020 1:48 PM
To: Joerg Sonnenberger <joerg at bec.de>
Cc: llvm-dev at lists.llvm.org
Subject: [EXT] Re: [llvm-dev] Efficient Green Thread Context-Switching

The first time you said “setjmp/longjmp intrinsics” I thought it was a typo, and that you were talking about the C standard library functions. If you’re actually talking about LLVM intrinsics, are they documented? I don’t see any intrinsics with those names in the language reference (https://llvm.org/docs/LangRef.html).

On Mar 27, 2020, at 3:30 PM, Joerg Sonnenberger via llvm-dev <llvm-dev at lists.llvm.org<mailto:llvm-dev at lists.llvm.org>> wrote:

On Fri, Mar 27, 2020 at 02:58:03PM -0500, Joshua Thomas Wise wrote:

Sorry, I certainly didn't mean to be dishonest. I was just repeating
one of the comparisons given by the research paper. Regardless, even
setjmp() uses a structure of 148 bytes in size (on my machine).

Let me repeat. Please take a look at the setjmp/longjmp intrinsics. On
support architectures they boil down to at most 5 pointers.

Joerg
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