Does Rust have an equivalent of -Ofast -march=native?
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box;
}
Does Rust have an equivalent of CFLAGS="-Ofast -march=native" C gcc compiler optimizations?
rust
edited Nov 25 '18 at 15:44
Shepmaster
164k16341489
asked Nov 25 '18 at 10:40
timkofutimkofu
1,09111019
add a comment |
Does Rust have an equivalent of CFLAGS="-Ofast -march=native" C gcc compiler optimizations?
rust
edited Nov 25 '18 at 15:44
Shepmaster
164k16341489
asked Nov 25 '18 at 10:40
timkofutimkofu
1,09111019
add a comment |
Does Rust have an equivalent of CFLAGS="-Ofast -march=native" C gcc compiler optimizations?
rust
edited Nov 25 '18 at 15:44
Shepmaster
164k16341489
asked Nov 25 '18 at 10:40
timkofutimkofu
1,09111019
Does Rust have an equivalent of CFLAGS="-Ofast -march=native" C gcc compiler optimizations?
rust
rust
edited Nov 25 '18 at 15:44
Shepmaster
164k16341489
asked Nov 25 '18 at 10:40
timkofutimkofu
1,09111019
edited Nov 25 '18 at 15:44
Shepmaster
164k16341489
asked Nov 25 '18 at 10:40
timkofutimkofu
1,09111019
edited Nov 25 '18 at 15:44
Shepmaster
164k16341489
edited Nov 25 '18 at 15:44
Shepmaster
164k16341489
edited Nov 25 '18 at 15:44
Shepmaster
164k16341489
164k16341489
asked Nov 25 '18 at 10:40
timkofutimkofu
1,09111019
asked Nov 25 '18 at 10:40
timkofutimkofu
1,09111019
asked Nov 25 '18 at 10:40
timkofutimkofu
1,09111019
1,09111019
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
To optimise for the native CPU, you can use
RUSTFLAGS="-C target-cpu=native"
I think LLVM optimises for speed (or more specifically, throughput) by default; I couldn't really find documentation on this, but this is what the source code suggests.
You should be able to select a different cost model using e.g.
RUSTFLAGS="-C target-cpu=native -C llvm-args='-cost-kind=latency'"
but I haven't tried this, nor do I know any details about the effect of this switch.
answered Nov 25 '18 at 12:37
Sven MarnachSven Marnach
363k80760704
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53466667%2fdoes-rust-have-an-equivalent-of-ofast-march-native%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
To optimise for the native CPU, you can use
RUSTFLAGS="-C target-cpu=native"
I think LLVM optimises for speed (or more specifically, throughput) by default; I couldn't really find documentation on this, but this is what the source code suggests.
You should be able to select a different cost model using e.g.
RUSTFLAGS="-C target-cpu=native -C llvm-args='-cost-kind=latency'"
but I haven't tried this, nor do I know any details about the effect of this switch.
answered Nov 25 '18 at 12:37
Sven MarnachSven Marnach
363k80760704
add a comment |
To optimise for the native CPU, you can use
RUSTFLAGS="-C target-cpu=native"
I think LLVM optimises for speed (or more specifically, throughput) by default; I couldn't really find documentation on this, but this is what the source code suggests.
You should be able to select a different cost model using e.g.
RUSTFLAGS="-C target-cpu=native -C llvm-args='-cost-kind=latency'"
but I haven't tried this, nor do I know any details about the effect of this switch.
answered Nov 25 '18 at 12:37
Sven MarnachSven Marnach
363k80760704
add a comment |
To optimise for the native CPU, you can use
RUSTFLAGS="-C target-cpu=native"
I think LLVM optimises for speed (or more specifically, throughput) by default; I couldn't really find documentation on this, but this is what the source code suggests.
You should be able to select a different cost model using e.g.
RUSTFLAGS="-C target-cpu=native -C llvm-args='-cost-kind=latency'"
but I haven't tried this, nor do I know any details about the effect of this switch.
answered Nov 25 '18 at 12:37
Sven MarnachSven Marnach
363k80760704
To optimise for the native CPU, you can use
RUSTFLAGS="-C target-cpu=native"
I think LLVM optimises for speed (or more specifically, throughput) by default; I couldn't really find documentation on this, but this is what the source code suggests.
You should be able to select a different cost model using e.g.
RUSTFLAGS="-C target-cpu=native -C llvm-args='-cost-kind=latency'"
but I haven't tried this, nor do I know any details about the effect of this switch.
answered Nov 25 '18 at 12:37
Sven MarnachSven Marnach
363k80760704
answered Nov 25 '18 at 12:37
Sven MarnachSven Marnach
363k80760704
answered Nov 25 '18 at 12:37
Sven MarnachSven Marnach
363k80760704
answered Nov 25 '18 at 12:37
Sven MarnachSven Marnach
363k80760704
363k80760704
add a comment |
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53466667%2fdoes-rust-have-an-equivalent-of-ofast-march-native%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
