Matt Godbolt
@matt.godbolt.org
Sometime verb, real person, lover of 8-bit computers, husband & father, trying to be a kind person. #blacklivesmatter; trans rights are human rights.
he/him
he/him
The last week I've been "home alone" juggling work and the kids (who are basically proto-adults) So I'm doing this on easy mode compared to most but... boy do I appreciate all my wife does for us all when she's here!
February 11, 2026 at 1:20 PM
The last week I've been "home alone" juggling work and the kids (who are basically proto-adults) So I'm doing this on easy mode compared to most but... boy do I appreciate all my wife does for us all when she's here!
Reposted by Matt Godbolt
OK "god bless america" and then naming every country in the americas from south to north is absolute king shit
February 9, 2026 at 1:33 AM
OK "god bless america" and then naming every country in the americas from south to north is absolute king shit
We just added CCC to @compiler-explorer.com - Claude's C Compiler. And what fitting way but to have gotten Claude to added itself to CE... @anthropic.com - added a build to our builder, added it to our daily builds, added the installation, the configuration, and tested it in staging. Nice!
February 8, 2026 at 3:47 AM
We just added CCC to @compiler-explorer.com - Claude's C Compiler. And what fitting way but to have gotten Claude to added itself to CE... @anthropic.com - added a build to our builder, added it to our daily builds, added the installation, the configuration, and tested it in staging. Nice!
Reposted by Matt Godbolt
I'm fairly convinced at this point that the secret to longevity is a nice hot shower. In 2024, I went to @revision-party.bsky.social for one and wrote a song about it...
inversephase.bandcamp.com/track/hubsch...
Inspired by leinad, it's also a @bloopmuseum.bsky.social shill.
#demoscene
inversephase.bandcamp.com/track/hubsch...
Inspired by leinad, it's also a @bloopmuseum.bsky.social shill.
#demoscene
Hubschie Duschie (party version) | Inverse Phase
track by Inverse Phase
inversephase.bandcamp.com
February 1, 2026 at 5:14 PM
I'm fairly convinced at this point that the secret to longevity is a nice hot shower. In 2024, I went to @revision-party.bsky.social for one and wrote a song about it...
inversephase.bandcamp.com/track/hubsch...
Inspired by leinad, it's also a @bloopmuseum.bsky.social shill.
#demoscene
inversephase.bandcamp.com/track/hubsch...
Inspired by leinad, it's also a @bloopmuseum.bsky.social shill.
#demoscene
Reposted by Matt Godbolt
Come to my highly interactive and dynamic C++ Best Practices workshop at NDC Toronto May 5-6, 2026!
ndctoronto.com/workshops/c-...
ndctoronto.com/workshops/c-...
C++ Best Practices | NDC Toronto 2026
This is a 2-day workshop that explores Best Practices as they apply to C++.
ndctoronto.com
January 21, 2026 at 11:12 PM
Come to my highly interactive and dynamic C++ Best Practices workshop at NDC Toronto May 5-6, 2026!
ndctoronto.com/workshops/c-...
ndctoronto.com/workshops/c-...
Reposted by Matt Godbolt
really looking forward to giving this keynote!
imo the best reverse engineers also deeply understand compilers; I’ll be getting into the weeds with LLVM for this one
imo the best reverse engineers also deeply understand compilers; I’ll be getting into the weeds with LLVM for this one
Laurie (@laurewired) is keynoting RE//verse 2026 with Thinking Like a Compiler: Obfuscation from the Other Side! From LLVM passes baked into the build to custom VM bytecode that leaves decompilers guessing, this one goes straight for the toolchain. Get your ticket: shop.binary.ninja/collections/...
January 22, 2026 at 4:36 AM
really looking forward to giving this keynote!
imo the best reverse engineers also deeply understand compilers; I’ll be getting into the weeds with LLVM for this one
imo the best reverse engineers also deeply understand compilers; I’ll be getting into the weeds with LLVM for this one
Reposted by Matt Godbolt
January 18, 2026 at 10:29 PM
Reposted by Matt Godbolt
Is this whole thing just because he’s confused about the Mercator projection
January 16, 2026 at 9:16 PM
Is this whole thing just because he’s confused about the Mercator projection
Reposted by Matt Godbolt
#GOTOpodcast:
@matt.godbolt.org sits down with Daniel Kusswurm to talk about the parts of modern computing most of us never touch but still rely on.
They dig into:
-> what SIMD actually is
-> intrinsics vs handwritten assembly
-> vectorized algorithms
🎧 gotopia.tech/podcast
@matt.godbolt.org sits down with Daniel Kusswurm to talk about the parts of modern computing most of us never touch but still rely on.
They dig into:
-> what SIMD actually is
-> intrinsics vs handwritten assembly
-> vectorized algorithms
🎧 gotopia.tech/podcast
January 16, 2026 at 1:12 PM
#GOTOpodcast:
@matt.godbolt.org sits down with Daniel Kusswurm to talk about the parts of modern computing most of us never touch but still rely on.
They dig into:
-> what SIMD actually is
-> intrinsics vs handwritten assembly
-> vectorized algorithms
🎧 gotopia.tech/podcast
@matt.godbolt.org sits down with Daniel Kusswurm to talk about the parts of modern computing most of us never touch but still rely on.
They dig into:
-> what SIMD actually is
-> intrinsics vs handwritten assembly
-> vectorized algorithms
🎧 gotopia.tech/podcast
Reposted by Matt Godbolt
David Bowie
8/1/1947 - 01/10/2016
Let’s flood Bluesky with our favorite Bowie songs today:
youtu.be/bsYp9q3QNaQ?...
8/1/1947 - 01/10/2016
Let’s flood Bluesky with our favorite Bowie songs today:
youtu.be/bsYp9q3QNaQ?...
January 10, 2026 at 12:03 PM
David Bowie
8/1/1947 - 01/10/2016
Let’s flood Bluesky with our favorite Bowie songs today:
youtu.be/bsYp9q3QNaQ?...
8/1/1947 - 01/10/2016
Let’s flood Bluesky with our favorite Bowie songs today:
youtu.be/bsYp9q3QNaQ?...
Reposted by Matt Godbolt
We cordially invite all members of the C++ community, to submit session proposals for the 14th annual C++Now Conference, to be held May 4th – May 8th, 2026, in Aspen, Colorado.
Read the announcement at cppnow.org/announcement...
#Coding #Cpp #Cppnow #Programming
Read the announcement at cppnow.org/announcement...
#Coding #Cpp #Cppnow #Programming
January 10, 2026 at 1:42 PM
We cordially invite all members of the C++ community, to submit session proposals for the 14th annual C++Now Conference, to be held May 4th – May 8th, 2026, in Aspen, Colorado.
Read the announcement at cppnow.org/announcement...
#Coding #Cpp #Cppnow #Programming
Read the announcement at cppnow.org/announcement...
#Coding #Cpp #Cppnow #Programming
Reposted by Matt Godbolt
Fun fact, this "world's most complicated/important machine" that Veritasium just covered runs C++!
youtu.be/MiUHjLxm3V0
I know because I have had students from ASML on multiple occasions (they had me out there for training and to speak at a meetup back in 2018!)
@veritasium.bsky.social
youtu.be/MiUHjLxm3V0
I know because I have had students from ASML on multiple occasions (they had me out there for training and to speak at a meetup back in 2018!)
@veritasium.bsky.social
The Ridiculous Engineering Of The World's Most Important Machine
The insane machines that make the most advanced computer chips. Sponsored by Brilliant - To learn for free for a full 30 days, go to https://brilliant.org/veritasium and get started. Plus, our…
youtu.be
January 6, 2026 at 5:01 PM
Fun fact, this "world's most complicated/important machine" that Veritasium just covered runs C++!
youtu.be/MiUHjLxm3V0
I know because I have had students from ASML on multiple occasions (they had me out there for training and to speak at a meetup back in 2018!)
@veritasium.bsky.social
youtu.be/MiUHjLxm3V0
I know because I have had students from ASML on multiple occasions (they had me out there for training and to speak at a meetup back in 2018!)
@veritasium.bsky.social
I just rediscovered that I have a Wikipedia page.... But only in German(!). Not quite sure how that came to be so...
January 4, 2026 at 3:34 PM
I just rediscovered that I have a Wikipedia page.... But only in German(!). Not quite sure how that came to be so...
The music for the Advent of Code Optimisation is available for you listening pleasure: youtu.be/6ZlVRMkFB9c?... and check out nocturnalplant's bandcamp too: nocturnalplant.bandcamp.com/music
Thanks @nocturnalplant.bsky.social !
Thanks @nocturnalplant.bsky.social !
nocturnalplant - Techie Christmas
YouTube video by nocturnalplant
youtu.be
January 4, 2026 at 3:10 AM
The music for the Advent of Code Optimisation is available for you listening pleasure: youtu.be/6ZlVRMkFB9c?... and check out nocturnalplant's bandcamp too: nocturnalplant.bandcamp.com/music
Thanks @nocturnalplant.bsky.social !
Thanks @nocturnalplant.bsky.social !
Reposted by Matt Godbolt
6:00 Added the missing -O2 flag. Lovely vid!
January 2, 2026 at 9:33 PM
6:00 Added the missing -O2 flag. Lovely vid!
Reposted by Matt Godbolt
My first CYO @effinbirds.com of the year. Asked the spouse for the adjective without context. Feel it's an accurate description of the news this morning.
January 3, 2026 at 4:18 PM
My first CYO @effinbirds.com of the year. Asked the spouse for the adjective without context. Feel it's an accurate description of the news this morning.
Reposted by Matt Godbolt
I am delighted to announce the release of my latest project:
Fully documented source code for The Sentinel, Geoff Crammond’s 1986 masterpiece.
Here’s the repository; deep dives coming soon.
See thread for details.
1/9
github.com/markmoxon/th...
#retrocomputing #retrogaming #bbcmicro #c64 #8bit
Fully documented source code for The Sentinel, Geoff Crammond’s 1986 masterpiece.
Here’s the repository; deep dives coming soon.
See thread for details.
1/9
github.com/markmoxon/th...
#retrocomputing #retrogaming #bbcmicro #c64 #8bit
GitHub - markmoxon/the-sentinel-source-code-bbc-micro: Fully documented and annotated source code for The Sentinel on the BBC Micro
Fully documented and annotated source code for The Sentinel on the BBC Micro - markmoxon/the-sentinel-source-code-bbc-micro
github.com
January 2, 2026 at 4:29 PM
I am delighted to announce the release of my latest project:
Fully documented source code for The Sentinel, Geoff Crammond’s 1986 masterpiece.
Here’s the repository; deep dives coming soon.
See thread for details.
1/9
github.com/markmoxon/th...
#retrocomputing #retrogaming #bbcmicro #c64 #8bit
Fully documented source code for The Sentinel, Geoff Crammond’s 1986 masterpiece.
Here’s the repository; deep dives coming soon.
See thread for details.
1/9
github.com/markmoxon/th...
#retrocomputing #retrogaming #bbcmicro #c64 #8bit
For your viewing pleasure, some outtakes from the #AoCO2025 - see some of how the sausage was made!
youtu.be/8gASKxx6mCc?...
youtu.be/8gASKxx6mCc?...
[AoCO 26/25] Outtakes
YouTube video by Matt Godbolt
youtu.be
January 2, 2026 at 5:37 AM
For your viewing pleasure, some outtakes from the #AoCO2025 - see some of how the sausage was made!
youtu.be/8gASKxx6mCc?...
youtu.be/8gASKxx6mCc?...
Thanks to my Advent of Code Optimisation #AoCO2025 Compiler Explorer's shop sales have raised $1,780! Huge thanks to all who bought mugs, t shirts, desk mats and hoodies!!
Order yours: shop.compiler-explorer.com
I'll do a detailed breakdown of CE costs soon. Thanks everyone and Happy New Year!
Order yours: shop.compiler-explorer.com
I'll do a detailed breakdown of CE costs soon. Thanks everyone and Happy New Year!
Compiler Explorer
The official Compiler Explorer shop! Come show your support for CE and get cool gear!
shop.compiler-explorer.com
December 31, 2025 at 6:14 PM
Thanks to my Advent of Code Optimisation #AoCO2025 Compiler Explorer's shop sales have raised $1,780! Huge thanks to all who bought mugs, t shirts, desk mats and hoodies!!
Order yours: shop.compiler-explorer.com
I'll do a detailed breakdown of CE costs soon. Thanks everyone and Happy New Year!
Order yours: shop.compiler-explorer.com
I'll do a detailed breakdown of CE costs soon. Thanks everyone and Happy New Year!
Reposted by Matt Godbolt
I tried to sell my last generation @Garmin.com watches, but then realized they weren't keeping charges very well.
The guy I gave them to for free sent me this lovely note and $50.
I'm forwarding the $ to ALS research in honor of Rainer Grimm, consider contributing to ALS research if you can.
The guy I gave them to for free sent me this lovely note and $50.
I'm forwarding the $ to ALS research in honor of Rainer Grimm, consider contributing to ALS research if you can.
December 31, 2025 at 12:22 AM
I tried to sell my last generation @Garmin.com watches, but then realized they weren't keeping charges very well.
The guy I gave them to for free sent me this lovely note and $50.
I'm forwarding the $ to ALS research in honor of Rainer Grimm, consider contributing to ALS research if you can.
The guy I gave them to for free sent me this lovely note and $50.
I'm forwarding the $ to ALS research in honor of Rainer Grimm, consider contributing to ALS research if you can.
Reposted by Matt Godbolt
New on the blog: You Will Never Know Enough — Make peace (and progress) with incomplete knowledge
kevlinhenney.medium.com/you-will-nev...
kevlinhenney.medium.com/you-will-nev...
You Will Never Know Enough
Make peace (and progress) with incomplete knowledge
kevlinhenney.medium.com
December 29, 2025 at 4:03 PM
New on the blog: You Will Never Know Enough — Make peace (and progress) with incomplete knowledge
kevlinhenney.medium.com/you-will-nev...
kevlinhenney.medium.com/you-will-nev...
Reposted by Matt Godbolt
@matt.godbolt.org is this a compiler explorer competitor? www.youtube.com/watch?v=pJ-2...
Call the compiler, fax it your code
YouTube video by Computing: the Details
www.youtube.com
December 29, 2025 at 2:28 AM
@matt.godbolt.org is this a compiler explorer competitor? www.youtube.com/watch?v=pJ-2...
A few folks have asked if there's a single list of the #AoCO2025 posts and there is: xania.org/AoCO2025-arc...
It's in reverse order but they're all there!
It's in reverse order but they're all there!
AoCO2025 Archive — Matt Godbolt’s blog
xania.org
December 26, 2025 at 8:13 PM
A few folks have asked if there's a single list of the #AoCO2025 posts and there is: xania.org/AoCO2025-arc...
It's in reverse order but they're all there!
It's in reverse order but they're all there!
Day 25 of #AoCO2025! 🎄 The final day! Thank you for joining this journey through compiler optimisations. From xor to vectorisation, it's been a wild ride. Happy holidays! 🎁
xania.org/202512/25-th...
youtu.be/N1sRfYwzmso
xania.org/202512/25-th...
youtu.be/N1sRfYwzmso
Thank you — Matt Godbolt’s blog
The end of the 2025 Advent of Compiler Optimisation
xania.org
December 25, 2025 at 1:34 PM
Day 25 of #AoCO2025! 🎄 The final day! Thank you for joining this journey through compiler optimisations. From xor to vectorisation, it's been a wild ride. Happy holidays! 🎁
xania.org/202512/25-th...
youtu.be/N1sRfYwzmso
xania.org/202512/25-th...
youtu.be/N1sRfYwzmso
On third glass of mulled wine. Final post of advent tomorrow might be a bit delayed :)
December 25, 2025 at 1:30 AM
On third glass of mulled wine. Final post of advent tomorrow might be a bit delayed :)