JIT: Fix double handling of call operands when importing intrinsic - #96557

Merged
jakobbotsch merged 2 commits into
dotnet:mainfrom
jakobbotsch:fix-96461
Jan 5, 2024
Merged

JIT: Fix double handling of call operands when importing intrinsic#96557
jakobbotsch merged 2 commits into
dotnet:mainfrom
jakobbotsch:fix-96461

Conversation

@jakobbotsch

Copy link
Copy Markdown
Member

Some intrinsics can be a noop when they are imported. For example,
Unsafe.BitCast<T, T>(X) just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an IsCall() check. Switch the check to
be based on !bIntrinsicImported instead.

Fix#96461

Some intrinsics can be a noop when they are imported. For example,
`Unsafe.BitCast<T, T>(X)` just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an `IsCall()` check. Switch the check to
be based on `!bIntrinsicImported` instead.
Fixdotnet#96461
@ghostghost added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Jan 5, 2024
@ghostghost assigned jakobbotschJan 5, 2024
@ghost

ghost commented Jan 5, 2024

Copy link
Copy Markdown

Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch
See info in area-owners.md if you want to be subscribed.

Issue Details

Some intrinsics can be a noop when they are imported. For example,
Unsafe.BitCast<T, T>(X) just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an IsCall() check. Switch the check to
be based on !bIntrinsicImported instead.

Fix #96461

Author:jakobbotsch
Assignees:-
Labels:

area-CodeGen-coreclr

Milestone:-

@jakobbotsch
jakobbotsch marked this pull request as ready for review January 5, 2024 18:00
@jakobbotsch

Copy link
Copy Markdown
MemberAuthor

cc @dotnet/jit-contrib PTAL @AndyAyersMS

No diffs


if (call->IsCall())
// Sometimes "call" is not a GT_CALL (if we imported an intrinsic that didn't turn into a call)
if (!bIntrinsicImported)

Copy link
Copy Markdown
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Is this something that needs backported?

Looks like it's been a potential issue for a long time, although it's unclear to me why we're only just seeing this "now" given how widely used intrinsics have been, including in potentially tail recursive positions, and we've many that can be no-ops or just return one of the input operands (such as op_UnaryPlus, AsInt32, etc).

-- Notably looks like there are some asserts in this block checking that !bIntrinsicImported that can potentially be removed.

Copy link
Copy Markdown
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Seems likely this double-processing ended up with the same result, so didn't actually cause a bug.

Copy link
Copy Markdown
MemberAuthor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I don't think it needs to be backported, I think it's very hard for the code that runs twice here to cause problems in release builds. Also we need a customer report for backporting.

Looks like it's been a potential issue for a long time, although it's unclear to me why we're only just seeing this "now" given how widely used intrinsics have been, including in potentially tail recursive positions, and we've many that can be no-ops or just return one of the input operands (such as op_UnaryPlus, AsInt32, etc).

Presumably people do not write code that involves noop intrinsics like op_UnaryPlus very often, and even more rarely that also satisfies the other conditions to hit the bug.

-- Notably looks like there are some asserts in this block checking that !bIntrinsicImported that can potentially be removed.

Let me address that as part of a future PR to rerunning CI.

@jakobbotsch
jakobbotsch merged commit 4ce2ee9 into dotnet:mainJan 5, 2024
@jakobbotsch
jakobbotsch deleted the fix-96461 branch January 5, 2024 18:36
@github-actionsgithub-actionsBot locked and limited conversation to collaborators Feb 5, 2024
Sign up for freeto subscribe to this conversation on GitHub. Already have an account? Sign in.

Labels

area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI

Projects

None yet

Development

Successfully merging this pull request may close these issues.

JIT assert on Unix in ReturnTypeDesc::InitializeStructReturnType

3 participants

@jakobbotsch@AndyAyersMS@tannergooding
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
Skip to content

JIT: Fix double handling of call operands when importing intrinsic - #96557

Merged
jakobbotsch merged 2 commits into
dotnet:mainfrom
jakobbotsch:fix-96461
Jan 5, 2024
Merged

JIT: Fix double handling of call operands when importing intrinsic#96557
jakobbotsch merged 2 commits into
dotnet:mainfrom
jakobbotsch:fix-96461

Conversation

@jakobbotsch

Copy link
Copy Markdown
Member

Some intrinsics can be a noop when they are imported. For example,
Unsafe.BitCast<T, T>(X) just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an IsCall() check. Switch the check to
be based on !bIntrinsicImported instead.

Fix#96461

Some intrinsics can be a noop when they are imported. For example,
`Unsafe.BitCast<T, T>(X)` just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an `IsCall()` check. Switch the check to
be based on `!bIntrinsicImported` instead.
Fixdotnet#96461
@ghostghost added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Jan 5, 2024
@ghostghost assigned jakobbotschJan 5, 2024
@ghost

ghost commented Jan 5, 2024

Copy link
Copy Markdown

Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch
See info in area-owners.md if you want to be subscribed.

Issue Details

Some intrinsics can be a noop when they are imported. For example,
Unsafe.BitCast<T, T>(X) just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an IsCall() check. Switch the check to
be based on !bIntrinsicImported instead.

Fix #96461

Author:jakobbotsch
Assignees:-
Labels:

area-CodeGen-coreclr

Milestone:-

@jakobbotsch
jakobbotsch marked this pull request as ready for review January 5, 2024 18:00
@jakobbotsch

Copy link
Copy Markdown
MemberAuthor

cc @dotnet/jit-contrib PTAL @AndyAyersMS

No diffs


if (call->IsCall())
// Sometimes "call" is not a GT_CALL (if we imported an intrinsic that didn't turn into a call)
if (!bIntrinsicImported)

Copy link
Copy Markdown
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Is this something that needs backported?

Looks like it's been a potential issue for a long time, although it's unclear to me why we're only just seeing this "now" given how widely used intrinsics have been, including in potentially tail recursive positions, and we've many that can be no-ops or just return one of the input operands (such as op_UnaryPlus, AsInt32, etc).

-- Notably looks like there are some asserts in this block checking that !bIntrinsicImported that can potentially be removed.

Copy link
Copy Markdown
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Seems likely this double-processing ended up with the same result, so didn't actually cause a bug.

Copy link
Copy Markdown
MemberAuthor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I don't think it needs to be backported, I think it's very hard for the code that runs twice here to cause problems in release builds. Also we need a customer report for backporting.

Looks like it's been a potential issue for a long time, although it's unclear to me why we're only just seeing this "now" given how widely used intrinsics have been, including in potentially tail recursive positions, and we've many that can be no-ops or just return one of the input operands (such as op_UnaryPlus, AsInt32, etc).

Presumably people do not write code that involves noop intrinsics like op_UnaryPlus very often, and even more rarely that also satisfies the other conditions to hit the bug.

-- Notably looks like there are some asserts in this block checking that !bIntrinsicImported that can potentially be removed.

Let me address that as part of a future PR to rerunning CI.

@jakobbotsch
jakobbotsch merged commit 4ce2ee9 into dotnet:mainJan 5, 2024
@jakobbotsch
jakobbotsch deleted the fix-96461 branch January 5, 2024 18:36
@github-actionsgithub-actionsBot locked and limited conversation to collaborators Feb 5, 2024
Sign up for freeto subscribe to this conversation on GitHub. Already have an account? Sign in.

Labels

area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI

Projects

None yet

Development

Successfully merging this pull request may close these issues.

JIT assert on Unix in ReturnTypeDesc::InitializeStructReturnType

3 participants

@jakobbotsch@AndyAyersMS@tannergooding
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix"); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

JIT: Fix double handling of call operands when importing intrinsic - #96557

Merged
jakobbotsch merged 2 commits into
dotnet:mainfrom
jakobbotsch:fix-96461
Jan 5, 2024
Merged

JIT: Fix double handling of call operands when importing intrinsic#96557
jakobbotsch merged 2 commits into
dotnet:mainfrom
jakobbotsch:fix-96461

Conversation

@jakobbotsch

Copy link
Copy Markdown
Member

Some intrinsics can be a noop when they are imported. For example,
Unsafe.BitCast<T, T>(X) just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an IsCall() check. Switch the check to
be based on !bIntrinsicImported instead.

Fix#96461

Some intrinsics can be a noop when they are imported. For example,
`Unsafe.BitCast<T, T>(X)` just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an `IsCall()` check. Switch the check to
be based on `!bIntrinsicImported` instead.
Fixdotnet#96461
@ghostghost added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Jan 5, 2024
@ghostghost assigned jakobbotschJan 5, 2024
@ghost

ghost commented Jan 5, 2024

Copy link
Copy Markdown

Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch
See info in area-owners.md if you want to be subscribed.

Issue Details

Some intrinsics can be a noop when they are imported. For example,
Unsafe.BitCast<T, T>(X) just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an IsCall() check. Switch the check to
be based on !bIntrinsicImported instead.

Fix #96461

Author:jakobbotsch
Assignees:-
Labels:

area-CodeGen-coreclr

Milestone:-

@jakobbotsch
jakobbotsch marked this pull request as ready for review January 5, 2024 18:00
@jakobbotsch

Copy link
Copy Markdown
MemberAuthor

cc @dotnet/jit-contrib PTAL @AndyAyersMS

No diffs


if (call->IsCall())
// Sometimes "call" is not a GT_CALL (if we imported an intrinsic that didn't turn into a call)
if (!bIntrinsicImported)

Copy link
Copy Markdown
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Is this something that needs backported?

Looks like it's been a potential issue for a long time, although it's unclear to me why we're only just seeing this "now" given how widely used intrinsics have been, including in potentially tail recursive positions, and we've many that can be no-ops or just return one of the input operands (such as op_UnaryPlus, AsInt32, etc).

-- Notably looks like there are some asserts in this block checking that !bIntrinsicImported that can potentially be removed.

Copy link
Copy Markdown
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Seems likely this double-processing ended up with the same result, so didn't actually cause a bug.

Copy link
Copy Markdown
MemberAuthor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I don't think it needs to be backported, I think it's very hard for the code that runs twice here to cause problems in release builds. Also we need a customer report for backporting.

Looks like it's been a potential issue for a long time, although it's unclear to me why we're only just seeing this "now" given how widely used intrinsics have been, including in potentially tail recursive positions, and we've many that can be no-ops or just return one of the input operands (such as op_UnaryPlus, AsInt32, etc).

Presumably people do not write code that involves noop intrinsics like op_UnaryPlus very often, and even more rarely that also satisfies the other conditions to hit the bug.

-- Notably looks like there are some asserts in this block checking that !bIntrinsicImported that can potentially be removed.

Let me address that as part of a future PR to rerunning CI.

@jakobbotsch
jakobbotsch merged commit 4ce2ee9 into dotnet:mainJan 5, 2024
@jakobbotsch
jakobbotsch deleted the fix-96461 branch January 5, 2024 18:36
@github-actionsgithub-actionsBot locked and limited conversation to collaborators Feb 5, 2024
Sign up for freeto subscribe to this conversation on GitHub. Already have an account? Sign in.

Labels

area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI

Projects

None yet

Development

Successfully merging this pull request may close these issues.

JIT assert on Unix in ReturnTypeDesc::InitializeStructReturnType

3 participants

@jakobbotsch@AndyAyersMS@tannergooding
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms"); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

JIT: Fix double handling of call operands when importing intrinsic - #96557

Merged
jakobbotsch merged 2 commits into
dotnet:mainfrom
jakobbotsch:fix-96461
Jan 5, 2024
Merged

JIT: Fix double handling of call operands when importing intrinsic#96557
jakobbotsch merged 2 commits into
dotnet:mainfrom
jakobbotsch:fix-96461

Conversation

@jakobbotsch

Copy link
Copy Markdown
Member

Some intrinsics can be a noop when they are imported. For example,
Unsafe.BitCast<T, T>(X) just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an IsCall() check. Switch the check to
be based on !bIntrinsicImported instead.

Fix#96461

Some intrinsics can be a noop when they are imported. For example,
`Unsafe.BitCast<T, T>(X)` just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an `IsCall()` check. Switch the check to
be based on `!bIntrinsicImported` instead.
Fixdotnet#96461
@ghostghost added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Jan 5, 2024
@ghostghost assigned jakobbotschJan 5, 2024
@ghost

ghost commented Jan 5, 2024

Copy link
Copy Markdown

Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch
See info in area-owners.md if you want to be subscribed.

Issue Details

Some intrinsics can be a noop when they are imported. For example,
Unsafe.BitCast<T, T>(X) just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an IsCall() check. Switch the check to
be based on !bIntrinsicImported instead.

Fix #96461

Author:jakobbotsch
Assignees:-
Labels:

area-CodeGen-coreclr

Milestone:-

@jakobbotsch
jakobbotsch marked this pull request as ready for review January 5, 2024 18:00
@jakobbotsch

Copy link
Copy Markdown
MemberAuthor

cc @dotnet/jit-contrib PTAL @AndyAyersMS

No diffs


if (call->IsCall())
// Sometimes "call" is not a GT_CALL (if we imported an intrinsic that didn't turn into a call)
if (!bIntrinsicImported)

Copy link
Copy Markdown
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Is this something that needs backported?

Looks like it's been a potential issue for a long time, although it's unclear to me why we're only just seeing this "now" given how widely used intrinsics have been, including in potentially tail recursive positions, and we've many that can be no-ops or just return one of the input operands (such as op_UnaryPlus, AsInt32, etc).

-- Notably looks like there are some asserts in this block checking that !bIntrinsicImported that can potentially be removed.

Copy link
Copy Markdown
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Seems likely this double-processing ended up with the same result, so didn't actually cause a bug.

Copy link
Copy Markdown
MemberAuthor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I don't think it needs to be backported, I think it's very hard for the code that runs twice here to cause problems in release builds. Also we need a customer report for backporting.

Looks like it's been a potential issue for a long time, although it's unclear to me why we're only just seeing this "now" given how widely used intrinsics have been, including in potentially tail recursive positions, and we've many that can be no-ops or just return one of the input operands (such as op_UnaryPlus, AsInt32, etc).

Presumably people do not write code that involves noop intrinsics like op_UnaryPlus very often, and even more rarely that also satisfies the other conditions to hit the bug.

-- Notably looks like there are some asserts in this block checking that !bIntrinsicImported that can potentially be removed.

Let me address that as part of a future PR to rerunning CI.

@jakobbotsch
jakobbotsch merged commit 4ce2ee9 into dotnet:mainJan 5, 2024
@jakobbotsch
jakobbotsch deleted the fix-96461 branch January 5, 2024 18:36
@github-actionsgithub-actionsBot locked and limited conversation to collaborators Feb 5, 2024
Sign up for freeto subscribe to this conversation on GitHub. Already have an account? Sign in.

Labels

area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI

Projects

None yet

Development

Successfully merging this pull request may close these issues.

JIT assert on Unix in ReturnTypeDesc::InitializeStructReturnType

3 participants

@jakobbotsch@AndyAyersMS@tannergooding
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links"); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + '
Skip to content

JIT: Fix double handling of call operands when importing intrinsic - #96557

Merged
jakobbotsch merged 2 commits into
dotnet:mainfrom
jakobbotsch:fix-96461
Jan 5, 2024
Merged

JIT: Fix double handling of call operands when importing intrinsic#96557
jakobbotsch merged 2 commits into
dotnet:mainfrom
jakobbotsch:fix-96461

Conversation

@jakobbotsch

Copy link
Copy Markdown
Member

Some intrinsics can be a noop when they are imported. For example,
Unsafe.BitCast<T, T>(X) just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an IsCall() check. Switch the check to
be based on !bIntrinsicImported instead.

Fix#96461

Some intrinsics can be a noop when they are imported. For example,
`Unsafe.BitCast<T, T>(X)` just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an `IsCall()` check. Switch the check to
be based on `!bIntrinsicImported` instead.
Fixdotnet#96461
@ghostghost added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Jan 5, 2024
@ghostghost assigned jakobbotschJan 5, 2024
@ghost

ghost commented Jan 5, 2024

Copy link
Copy Markdown

Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch
See info in area-owners.md if you want to be subscribed.

Issue Details

Some intrinsics can be a noop when they are imported. For example,
Unsafe.BitCast<T, T>(X) just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an IsCall() check. Switch the check to
be based on !bIntrinsicImported instead.

Fix #96461

Author:jakobbotsch
Assignees:-
Labels:

area-CodeGen-coreclr

Milestone:-

@jakobbotsch
jakobbotsch marked this pull request as ready for review January 5, 2024 18:00
@jakobbotsch

Copy link
Copy Markdown
MemberAuthor

cc @dotnet/jit-contrib PTAL @AndyAyersMS

No diffs


if (call->IsCall())
// Sometimes "call" is not a GT_CALL (if we imported an intrinsic that didn't turn into a call)
if (!bIntrinsicImported)

Copy link
Copy Markdown
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Is this something that needs backported?

Looks like it's been a potential issue for a long time, although it's unclear to me why we're only just seeing this "now" given how widely used intrinsics have been, including in potentially tail recursive positions, and we've many that can be no-ops or just return one of the input operands (such as op_UnaryPlus, AsInt32, etc).

-- Notably looks like there are some asserts in this block checking that !bIntrinsicImported that can potentially be removed.

Copy link
Copy Markdown
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Seems likely this double-processing ended up with the same result, so didn't actually cause a bug.

Copy link
Copy Markdown
MemberAuthor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I don't think it needs to be backported, I think it's very hard for the code that runs twice here to cause problems in release builds. Also we need a customer report for backporting.

Looks like it's been a potential issue for a long time, although it's unclear to me why we're only just seeing this "now" given how widely used intrinsics have been, including in potentially tail recursive positions, and we've many that can be no-ops or just return one of the input operands (such as op_UnaryPlus, AsInt32, etc).

Presumably people do not write code that involves noop intrinsics like op_UnaryPlus very often, and even more rarely that also satisfies the other conditions to hit the bug.

-- Notably looks like there are some asserts in this block checking that !bIntrinsicImported that can potentially be removed.

Let me address that as part of a future PR to rerunning CI.

@jakobbotsch
jakobbotsch merged commit 4ce2ee9 into dotnet:mainJan 5, 2024
@jakobbotsch
jakobbotsch deleted the fix-96461 branch January 5, 2024 18:36
@github-actionsgithub-actionsBot locked and limited conversation to collaborators Feb 5, 2024
Sign up for freeto subscribe to this conversation on GitHub. Already have an account? Sign in.

Labels

area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI

Projects

None yet

Development

Successfully merging this pull request may close these issues.

JIT assert on Unix in ReturnTypeDesc::InitializeStructReturnType

3 participants

@jakobbotsch@AndyAyersMS@tannergooding
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default"); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

JIT: Fix double handling of call operands when importing intrinsic - #96557

Merged
jakobbotsch merged 2 commits into
dotnet:mainfrom
jakobbotsch:fix-96461
Jan 5, 2024
Merged

JIT: Fix double handling of call operands when importing intrinsic#96557
jakobbotsch merged 2 commits into
dotnet:mainfrom
jakobbotsch:fix-96461

Conversation

@jakobbotsch

Copy link
Copy Markdown
Member

Some intrinsics can be a noop when they are imported. For example,
Unsafe.BitCast<T, T>(X) just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an IsCall() check. Switch the check to
be based on !bIntrinsicImported instead.

Fix#96461

Some intrinsics can be a noop when they are imported. For example,
`Unsafe.BitCast<T, T>(X)` just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an `IsCall()` check. Switch the check to
be based on `!bIntrinsicImported` instead.
Fixdotnet#96461
@ghostghost added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Jan 5, 2024
@ghostghost assigned jakobbotschJan 5, 2024
@ghost

ghost commented Jan 5, 2024

Copy link
Copy Markdown

Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch
See info in area-owners.md if you want to be subscribed.

Issue Details

Some intrinsics can be a noop when they are imported. For example,
Unsafe.BitCast<T, T>(X) just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an IsCall() check. Switch the check to
be based on !bIntrinsicImported instead.

Fix #96461

Author:jakobbotsch
Assignees:-
Labels:

area-CodeGen-coreclr

Milestone:-

@jakobbotsch
jakobbotsch marked this pull request as ready for review January 5, 2024 18:00
@jakobbotsch

Copy link
Copy Markdown
MemberAuthor

cc @dotnet/jit-contrib PTAL @AndyAyersMS

No diffs


if (call->IsCall())
// Sometimes "call" is not a GT_CALL (if we imported an intrinsic that didn't turn into a call)
if (!bIntrinsicImported)

Copy link
Copy Markdown
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Is this something that needs backported?

Looks like it's been a potential issue for a long time, although it's unclear to me why we're only just seeing this "now" given how widely used intrinsics have been, including in potentially tail recursive positions, and we've many that can be no-ops or just return one of the input operands (such as op_UnaryPlus, AsInt32, etc).

-- Notably looks like there are some asserts in this block checking that !bIntrinsicImported that can potentially be removed.

Copy link
Copy Markdown
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Seems likely this double-processing ended up with the same result, so didn't actually cause a bug.

Copy link
Copy Markdown
MemberAuthor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I don't think it needs to be backported, I think it's very hard for the code that runs twice here to cause problems in release builds. Also we need a customer report for backporting.

Looks like it's been a potential issue for a long time, although it's unclear to me why we're only just seeing this "now" given how widely used intrinsics have been, including in potentially tail recursive positions, and we've many that can be no-ops or just return one of the input operands (such as op_UnaryPlus, AsInt32, etc).

Presumably people do not write code that involves noop intrinsics like op_UnaryPlus very often, and even more rarely that also satisfies the other conditions to hit the bug.

-- Notably looks like there are some asserts in this block checking that !bIntrinsicImported that can potentially be removed.

Let me address that as part of a future PR to rerunning CI.

@jakobbotsch
jakobbotsch merged commit 4ce2ee9 into dotnet:mainJan 5, 2024
@jakobbotsch
jakobbotsch deleted the fix-96461 branch January 5, 2024 18:36
@github-actionsgithub-actionsBot locked and limited conversation to collaborators Feb 5, 2024
Sign up for freeto subscribe to this conversation on GitHub. Already have an account? Sign in.

Labels

area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI

Projects

None yet

Development

Successfully merging this pull request may close these issues.

JIT assert on Unix in ReturnTypeDesc::InitializeStructReturnType

3 participants

@jakobbotsch@AndyAyersMS@tannergooding
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers"); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

JIT: Fix double handling of call operands when importing intrinsic - #96557

Merged
jakobbotsch merged 2 commits into
dotnet:mainfrom
jakobbotsch:fix-96461
Jan 5, 2024
Merged

JIT: Fix double handling of call operands when importing intrinsic#96557
jakobbotsch merged 2 commits into
dotnet:mainfrom
jakobbotsch:fix-96461

Conversation

@jakobbotsch

Copy link
Copy Markdown
Member

Some intrinsics can be a noop when they are imported. For example,
Unsafe.BitCast<T, T>(X) just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an IsCall() check. Switch the check to
be based on !bIntrinsicImported instead.

Fix#96461

Some intrinsics can be a noop when they are imported. For example,
`Unsafe.BitCast<T, T>(X)` just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an `IsCall()` check. Switch the check to
be based on `!bIntrinsicImported` instead.
Fixdotnet#96461
@ghostghost added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Jan 5, 2024
@ghostghost assigned jakobbotschJan 5, 2024
@ghost

ghost commented Jan 5, 2024

Copy link
Copy Markdown

Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch
See info in area-owners.md if you want to be subscribed.

Issue Details

Some intrinsics can be a noop when they are imported. For example,
Unsafe.BitCast<T, T>(X) just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an IsCall() check. Switch the check to
be based on !bIntrinsicImported instead.

Fix #96461

Author:jakobbotsch
Assignees:-
Labels:

area-CodeGen-coreclr

Milestone:-

@jakobbotsch
jakobbotsch marked this pull request as ready for review January 5, 2024 18:00
@jakobbotsch

Copy link
Copy Markdown
MemberAuthor

cc @dotnet/jit-contrib PTAL @AndyAyersMS

No diffs


if (call->IsCall())
// Sometimes "call" is not a GT_CALL (if we imported an intrinsic that didn't turn into a call)
if (!bIntrinsicImported)

Copy link
Copy Markdown
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Is this something that needs backported?

Looks like it's been a potential issue for a long time, although it's unclear to me why we're only just seeing this "now" given how widely used intrinsics have been, including in potentially tail recursive positions, and we've many that can be no-ops or just return one of the input operands (such as op_UnaryPlus, AsInt32, etc).

-- Notably looks like there are some asserts in this block checking that !bIntrinsicImported that can potentially be removed.

Copy link
Copy Markdown
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Seems likely this double-processing ended up with the same result, so didn't actually cause a bug.

Copy link
Copy Markdown
MemberAuthor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I don't think it needs to be backported, I think it's very hard for the code that runs twice here to cause problems in release builds. Also we need a customer report for backporting.

Looks like it's been a potential issue for a long time, although it's unclear to me why we're only just seeing this "now" given how widely used intrinsics have been, including in potentially tail recursive positions, and we've many that can be no-ops or just return one of the input operands (such as op_UnaryPlus, AsInt32, etc).

Presumably people do not write code that involves noop intrinsics like op_UnaryPlus very often, and even more rarely that also satisfies the other conditions to hit the bug.

-- Notably looks like there are some asserts in this block checking that !bIntrinsicImported that can potentially be removed.

Let me address that as part of a future PR to rerunning CI.

@jakobbotsch
jakobbotsch merged commit 4ce2ee9 into dotnet:mainJan 5, 2024
@jakobbotsch
jakobbotsch deleted the fix-96461 branch January 5, 2024 18:36
@github-actionsgithub-actionsBot locked and limited conversation to collaborators Feb 5, 2024
Sign up for freeto subscribe to this conversation on GitHub. Already have an account? Sign in.

Labels

area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI

Projects

None yet

Development

Successfully merging this pull request may close these issues.

JIT assert on Unix in ReturnTypeDesc::InitializeStructReturnType

3 participants

@jakobbotsch@AndyAyersMS@tannergooding
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode"); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })();
Skip to content

JIT: Fix double handling of call operands when importing intrinsic - #96557

Merged
jakobbotsch merged 2 commits into
dotnet:mainfrom
jakobbotsch:fix-96461
Jan 5, 2024
Merged

JIT: Fix double handling of call operands when importing intrinsic#96557
jakobbotsch merged 2 commits into
dotnet:mainfrom
jakobbotsch:fix-96461

Conversation

@jakobbotsch

Copy link
Copy Markdown
Member

Some intrinsics can be a noop when they are imported. For example,
Unsafe.BitCast<T, T>(X) just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an IsCall() check. Switch the check to
be based on !bIntrinsicImported instead.

Fix#96461

Some intrinsics can be a noop when they are imported. For example,
`Unsafe.BitCast<T, T>(X)` just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an `IsCall()` check. Switch the check to
be based on `!bIntrinsicImported` instead.
Fixdotnet#96461
@ghostghost added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Jan 5, 2024
@ghostghost assigned jakobbotschJan 5, 2024
@ghost

ghost commented Jan 5, 2024

Copy link
Copy Markdown

Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch
See info in area-owners.md if you want to be subscribed.

Issue Details

Some intrinsics can be a noop when they are imported. For example,
Unsafe.BitCast<T, T>(X) just returns its operand when importing. If
that operand is a call then we will run the tail logic of call
importation for that call node twice, since that logic tries to filter
out intrinsic importation with an IsCall() check. Switch the check to
be based on !bIntrinsicImported instead.

Fix #96461

Author:jakobbotsch
Assignees:-
Labels:

area-CodeGen-coreclr

Milestone:-

@jakobbotsch
jakobbotsch marked this pull request as ready for review January 5, 2024 18:00
@jakobbotsch

Copy link
Copy Markdown
MemberAuthor

cc @dotnet/jit-contrib PTAL @AndyAyersMS

No diffs


if (call->IsCall())
// Sometimes "call" is not a GT_CALL (if we imported an intrinsic that didn't turn into a call)
if (!bIntrinsicImported)

Copy link
Copy Markdown
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Is this something that needs backported?

Looks like it's been a potential issue for a long time, although it's unclear to me why we're only just seeing this "now" given how widely used intrinsics have been, including in potentially tail recursive positions, and we've many that can be no-ops or just return one of the input operands (such as op_UnaryPlus, AsInt32, etc).

-- Notably looks like there are some asserts in this block checking that !bIntrinsicImported that can potentially be removed.

Copy link
Copy Markdown
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Seems likely this double-processing ended up with the same result, so didn't actually cause a bug.

Copy link
Copy Markdown
MemberAuthor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I don't think it needs to be backported, I think it's very hard for the code that runs twice here to cause problems in release builds. Also we need a customer report for backporting.

Looks like it's been a potential issue for a long time, although it's unclear to me why we're only just seeing this "now" given how widely used intrinsics have been, including in potentially tail recursive positions, and we've many that can be no-ops or just return one of the input operands (such as op_UnaryPlus, AsInt32, etc).

Presumably people do not write code that involves noop intrinsics like op_UnaryPlus very often, and even more rarely that also satisfies the other conditions to hit the bug.

-- Notably looks like there are some asserts in this block checking that !bIntrinsicImported that can potentially be removed.

Let me address that as part of a future PR to rerunning CI.

@jakobbotsch
jakobbotsch merged commit 4ce2ee9 into dotnet:mainJan 5, 2024
@jakobbotsch
jakobbotsch deleted the fix-96461 branch January 5, 2024 18:36
@github-actionsgithub-actionsBot locked and limited conversation to collaborators Feb 5, 2024
Sign up for freeto subscribe to this conversation on GitHub. Already have an account? Sign in.

Labels

area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI

Projects

None yet

Development

Successfully merging this pull request may close these issues.

JIT assert on Unix in ReturnTypeDesc::InitializeStructReturnType

3 participants

@jakobbotsch@AndyAyersMS@tannergooding