Fix getAsyncOtherVariant JIT-EE implementation in VM - #125225

Merged
jakobbotsch merged 1 commit into
dotnet:mainfrom
jakobbotsch:fix-spmi-async-variants
Mar 6, 2026
Merged

Fix getAsyncOtherVariant JIT-EE implementation in VM#125225
jakobbotsch merged 1 commit into
dotnet:mainfrom
jakobbotsch:fix-spmi-async-variants

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We could end up calling GetAsyncOtherVariant for explicitly-async methods like AsyncHelpers.Await, which do not have other variants.
This was happening under EnableExtraSuperPmiQueries mode that queries both variants proactively. Also simplify SPMI implementation of the recording of this function.

We could end up calling GetAsyncOtherVariant for explicitly-async
methods like AsyncHelpers.Await, which do not have other variants.
CopilotAI review requested due to automatic review settings March 5, 2026 15:41
@github-actionsgithub-actionsBot added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Mar 5, 2026
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Pull request overview

Fixes VM/JIT handling of async “other variant” lookups so explicitly-async (non-variant-paired) methods don’t trigger invalid GetAsyncOtherVariant calls, and streamlines SuperPMI recording for the query.

Changes:

  • Introduce MethodDesc::HasAsyncOtherVariant() and assert GetAsyncOtherVariant() is only used when a paired variant exists.
  • Update VM call sites (method table builder and JIT-EE getAsyncOtherVariant) to gate lookups on HasAsyncOtherVariant().
  • Simplify SuperPMI shim collector recording API for getAsyncOtherVariant.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file
FileDescription
src/coreclr/vm/methodtablebuilder.cppUses HasAsyncOtherVariant() to avoid requesting non-existent async variants during decl lookup.
src/coreclr/vm/method.hppAdds HasAsyncOtherVariant() and asserts GetAsyncOtherVariant() precondition.
src/coreclr/vm/jitinterface.cppPrevents JIT-EE from calling GetAsyncOtherVariant() for explicitly-async methods with no pair.
src/coreclr/tools/superpmi/superpmi-shim-collector/icorjitinfo.cppSimplifies SPMI interception/recording for getAsyncOtherVariant.
src/coreclr/tools/superpmi/superpmi-shared/methodcontext.hUpdates recorder signature to take bool instead of bool*.
src/coreclr/tools/superpmi/superpmi-shared/methodcontext.cppRecords variantIsThunk by value in the SPMI method context.
src/coreclr/inc/corinfo.hClarifies variantIsThunk meaning in API comment.

@jakobbotsch
jakobbotsch marked this pull request as ready for review March 5, 2026 17:54
@jakobbotsch
jakobbotsch merged commit c86ebf2 into dotnet:mainMar 6, 2026
113 checks passed
@jakobbotsch
jakobbotsch deleted the fix-spmi-async-variants branch March 6, 2026 00:13
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, '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" + '
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Fix getAsyncOtherVariant JIT-EE implementation in VM - #125225

Merged
jakobbotsch merged 1 commit into
dotnet:mainfrom
jakobbotsch:fix-spmi-async-variants
Mar 6, 2026
Merged

Fix getAsyncOtherVariant JIT-EE implementation in VM#125225
jakobbotsch merged 1 commit into
dotnet:mainfrom
jakobbotsch:fix-spmi-async-variants

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We could end up calling GetAsyncOtherVariant for explicitly-async methods like AsyncHelpers.Await, which do not have other variants.
This was happening under EnableExtraSuperPmiQueries mode that queries both variants proactively. Also simplify SPMI implementation of the recording of this function.

We could end up calling GetAsyncOtherVariant for explicitly-async
methods like AsyncHelpers.Await, which do not have other variants.
CopilotAI review requested due to automatic review settings March 5, 2026 15:41
@github-actionsgithub-actionsBot added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Mar 5, 2026
@dotnet-policy-service

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Pull request overview

Fixes VM/JIT handling of async “other variant” lookups so explicitly-async (non-variant-paired) methods don’t trigger invalid GetAsyncOtherVariant calls, and streamlines SuperPMI recording for the query.

Changes:

  • Introduce MethodDesc::HasAsyncOtherVariant() and assert GetAsyncOtherVariant() is only used when a paired variant exists.
  • Update VM call sites (method table builder and JIT-EE getAsyncOtherVariant) to gate lookups on HasAsyncOtherVariant().
  • Simplify SuperPMI shim collector recording API for getAsyncOtherVariant.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file
FileDescription
src/coreclr/vm/methodtablebuilder.cppUses HasAsyncOtherVariant() to avoid requesting non-existent async variants during decl lookup.
src/coreclr/vm/method.hppAdds HasAsyncOtherVariant() and asserts GetAsyncOtherVariant() precondition.
src/coreclr/vm/jitinterface.cppPrevents JIT-EE from calling GetAsyncOtherVariant() for explicitly-async methods with no pair.
src/coreclr/tools/superpmi/superpmi-shim-collector/icorjitinfo.cppSimplifies SPMI interception/recording for getAsyncOtherVariant.
src/coreclr/tools/superpmi/superpmi-shared/methodcontext.hUpdates recorder signature to take bool instead of bool*.
src/coreclr/tools/superpmi/superpmi-shared/methodcontext.cppRecords variantIsThunk by value in the SPMI method context.
src/coreclr/inc/corinfo.hClarifies variantIsThunk meaning in API comment.

@jakobbotsch
jakobbotsch marked this pull request as ready for review March 5, 2026 17:54
@jakobbotsch
jakobbotsch merged commit c86ebf2 into dotnet:mainMar 6, 2026
113 checks passed
@jakobbotsch
jakobbotsch deleted the fix-spmi-async-variants branch March 6, 2026 00:13
@github-actionsgithub-actionsBot locked and limited conversation to collaborators Apr 5, 2026
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@jakobbotsch@jkotas
, '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

Fix getAsyncOtherVariant JIT-EE implementation in VM - #125225

Merged
jakobbotsch merged 1 commit into
dotnet:mainfrom
jakobbotsch:fix-spmi-async-variants
Mar 6, 2026
Merged

Fix getAsyncOtherVariant JIT-EE implementation in VM#125225
jakobbotsch merged 1 commit into
dotnet:mainfrom
jakobbotsch:fix-spmi-async-variants

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We could end up calling GetAsyncOtherVariant for explicitly-async methods like AsyncHelpers.Await, which do not have other variants.
This was happening under EnableExtraSuperPmiQueries mode that queries both variants proactively. Also simplify SPMI implementation of the recording of this function.

We could end up calling GetAsyncOtherVariant for explicitly-async
methods like AsyncHelpers.Await, which do not have other variants.
CopilotAI review requested due to automatic review settings March 5, 2026 15:41
@github-actionsgithub-actionsBot added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Mar 5, 2026
@dotnet-policy-service

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Pull request overview

Fixes VM/JIT handling of async “other variant” lookups so explicitly-async (non-variant-paired) methods don’t trigger invalid GetAsyncOtherVariant calls, and streamlines SuperPMI recording for the query.

Changes:

  • Introduce MethodDesc::HasAsyncOtherVariant() and assert GetAsyncOtherVariant() is only used when a paired variant exists.
  • Update VM call sites (method table builder and JIT-EE getAsyncOtherVariant) to gate lookups on HasAsyncOtherVariant().
  • Simplify SuperPMI shim collector recording API for getAsyncOtherVariant.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file
FileDescription
src/coreclr/vm/methodtablebuilder.cppUses HasAsyncOtherVariant() to avoid requesting non-existent async variants during decl lookup.
src/coreclr/vm/method.hppAdds HasAsyncOtherVariant() and asserts GetAsyncOtherVariant() precondition.
src/coreclr/vm/jitinterface.cppPrevents JIT-EE from calling GetAsyncOtherVariant() for explicitly-async methods with no pair.
src/coreclr/tools/superpmi/superpmi-shim-collector/icorjitinfo.cppSimplifies SPMI interception/recording for getAsyncOtherVariant.
src/coreclr/tools/superpmi/superpmi-shared/methodcontext.hUpdates recorder signature to take bool instead of bool*.
src/coreclr/tools/superpmi/superpmi-shared/methodcontext.cppRecords variantIsThunk by value in the SPMI method context.
src/coreclr/inc/corinfo.hClarifies variantIsThunk meaning in API comment.

@jakobbotsch
jakobbotsch marked this pull request as ready for review March 5, 2026 17:54
@jakobbotsch
jakobbotsch merged commit c86ebf2 into dotnet:mainMar 6, 2026
113 checks passed
@jakobbotsch
jakobbotsch deleted the fix-spmi-async-variants branch March 6, 2026 00:13
@github-actionsgithub-actionsBot locked and limited conversation to collaborators Apr 5, 2026
Sign up for freeto subscribe to this conversation on GitHub. Already have an account? Sign in.

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@jakobbotsch@jkotas
, '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

Fix getAsyncOtherVariant JIT-EE implementation in VM - #125225

Merged
jakobbotsch merged 1 commit into
dotnet:mainfrom
jakobbotsch:fix-spmi-async-variants
Mar 6, 2026
Merged

Fix getAsyncOtherVariant JIT-EE implementation in VM#125225
jakobbotsch merged 1 commit into
dotnet:mainfrom
jakobbotsch:fix-spmi-async-variants

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We could end up calling GetAsyncOtherVariant for explicitly-async methods like AsyncHelpers.Await, which do not have other variants.
This was happening under EnableExtraSuperPmiQueries mode that queries both variants proactively. Also simplify SPMI implementation of the recording of this function.

We could end up calling GetAsyncOtherVariant for explicitly-async
methods like AsyncHelpers.Await, which do not have other variants.
CopilotAI review requested due to automatic review settings March 5, 2026 15:41
@github-actionsgithub-actionsBot added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Mar 5, 2026
@dotnet-policy-service

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

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Pull request overview

Fixes VM/JIT handling of async “other variant” lookups so explicitly-async (non-variant-paired) methods don’t trigger invalid GetAsyncOtherVariant calls, and streamlines SuperPMI recording for the query.

Changes:

  • Introduce MethodDesc::HasAsyncOtherVariant() and assert GetAsyncOtherVariant() is only used when a paired variant exists.
  • Update VM call sites (method table builder and JIT-EE getAsyncOtherVariant) to gate lookups on HasAsyncOtherVariant().
  • Simplify SuperPMI shim collector recording API for getAsyncOtherVariant.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file
FileDescription
src/coreclr/vm/methodtablebuilder.cppUses HasAsyncOtherVariant() to avoid requesting non-existent async variants during decl lookup.
src/coreclr/vm/method.hppAdds HasAsyncOtherVariant() and asserts GetAsyncOtherVariant() precondition.
src/coreclr/vm/jitinterface.cppPrevents JIT-EE from calling GetAsyncOtherVariant() for explicitly-async methods with no pair.
src/coreclr/tools/superpmi/superpmi-shim-collector/icorjitinfo.cppSimplifies SPMI interception/recording for getAsyncOtherVariant.
src/coreclr/tools/superpmi/superpmi-shared/methodcontext.hUpdates recorder signature to take bool instead of bool*.
src/coreclr/tools/superpmi/superpmi-shared/methodcontext.cppRecords variantIsThunk by value in the SPMI method context.
src/coreclr/inc/corinfo.hClarifies variantIsThunk meaning in API comment.

@jakobbotsch
jakobbotsch marked this pull request as ready for review March 5, 2026 17:54
@jakobbotsch
jakobbotsch merged commit c86ebf2 into dotnet:mainMar 6, 2026
113 checks passed
@jakobbotsch
jakobbotsch deleted the fix-spmi-async-variants branch March 6, 2026 00:13
@github-actionsgithub-actionsBot locked and limited conversation to collaborators Apr 5, 2026
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@jakobbotsch@jkotas
, '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

Fix getAsyncOtherVariant JIT-EE implementation in VM - #125225

Merged
jakobbotsch merged 1 commit into
dotnet:mainfrom
jakobbotsch:fix-spmi-async-variants
Mar 6, 2026
Merged

Fix getAsyncOtherVariant JIT-EE implementation in VM#125225
jakobbotsch merged 1 commit into
dotnet:mainfrom
jakobbotsch:fix-spmi-async-variants

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We could end up calling GetAsyncOtherVariant for explicitly-async methods like AsyncHelpers.Await, which do not have other variants.
This was happening under EnableExtraSuperPmiQueries mode that queries both variants proactively. Also simplify SPMI implementation of the recording of this function.

We could end up calling GetAsyncOtherVariant for explicitly-async
methods like AsyncHelpers.Await, which do not have other variants.
CopilotAI review requested due to automatic review settings March 5, 2026 15:41
@github-actionsgithub-actionsBot added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Mar 5, 2026
@dotnet-policy-service

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Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch
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Pull request overview

Fixes VM/JIT handling of async “other variant” lookups so explicitly-async (non-variant-paired) methods don’t trigger invalid GetAsyncOtherVariant calls, and streamlines SuperPMI recording for the query.

Changes:

  • Introduce MethodDesc::HasAsyncOtherVariant() and assert GetAsyncOtherVariant() is only used when a paired variant exists.
  • Update VM call sites (method table builder and JIT-EE getAsyncOtherVariant) to gate lookups on HasAsyncOtherVariant().
  • Simplify SuperPMI shim collector recording API for getAsyncOtherVariant.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file
FileDescription
src/coreclr/vm/methodtablebuilder.cppUses HasAsyncOtherVariant() to avoid requesting non-existent async variants during decl lookup.
src/coreclr/vm/method.hppAdds HasAsyncOtherVariant() and asserts GetAsyncOtherVariant() precondition.
src/coreclr/vm/jitinterface.cppPrevents JIT-EE from calling GetAsyncOtherVariant() for explicitly-async methods with no pair.
src/coreclr/tools/superpmi/superpmi-shim-collector/icorjitinfo.cppSimplifies SPMI interception/recording for getAsyncOtherVariant.
src/coreclr/tools/superpmi/superpmi-shared/methodcontext.hUpdates recorder signature to take bool instead of bool*.
src/coreclr/tools/superpmi/superpmi-shared/methodcontext.cppRecords variantIsThunk by value in the SPMI method context.
src/coreclr/inc/corinfo.hClarifies variantIsThunk meaning in API comment.

@jakobbotsch
jakobbotsch marked this pull request as ready for review March 5, 2026 17:54
@jakobbotsch
jakobbotsch merged commit c86ebf2 into dotnet:mainMar 6, 2026
113 checks passed
@jakobbotsch
jakobbotsch deleted the fix-spmi-async-variants branch March 6, 2026 00:13
@github-actionsgithub-actionsBot locked and limited conversation to collaborators Apr 5, 2026
Sign up for freeto subscribe to this conversation on GitHub. Already have an account? Sign in.

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@jakobbotsch@jkotas
, '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

Fix getAsyncOtherVariant JIT-EE implementation in VM - #125225

Merged
jakobbotsch merged 1 commit into
dotnet:mainfrom
jakobbotsch:fix-spmi-async-variants
Mar 6, 2026
Merged

Fix getAsyncOtherVariant JIT-EE implementation in VM#125225
jakobbotsch merged 1 commit into
dotnet:mainfrom
jakobbotsch:fix-spmi-async-variants

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We could end up calling GetAsyncOtherVariant for explicitly-async methods like AsyncHelpers.Await, which do not have other variants.
This was happening under EnableExtraSuperPmiQueries mode that queries both variants proactively. Also simplify SPMI implementation of the recording of this function.

We could end up calling GetAsyncOtherVariant for explicitly-async
methods like AsyncHelpers.Await, which do not have other variants.
CopilotAI review requested due to automatic review settings March 5, 2026 15:41
@github-actionsgithub-actionsBot added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Mar 5, 2026
@dotnet-policy-service

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See info in area-owners.md if you want to be subscribed.

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Pull request overview

Fixes VM/JIT handling of async “other variant” lookups so explicitly-async (non-variant-paired) methods don’t trigger invalid GetAsyncOtherVariant calls, and streamlines SuperPMI recording for the query.

Changes:

  • Introduce MethodDesc::HasAsyncOtherVariant() and assert GetAsyncOtherVariant() is only used when a paired variant exists.
  • Update VM call sites (method table builder and JIT-EE getAsyncOtherVariant) to gate lookups on HasAsyncOtherVariant().
  • Simplify SuperPMI shim collector recording API for getAsyncOtherVariant.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file
FileDescription
src/coreclr/vm/methodtablebuilder.cppUses HasAsyncOtherVariant() to avoid requesting non-existent async variants during decl lookup.
src/coreclr/vm/method.hppAdds HasAsyncOtherVariant() and asserts GetAsyncOtherVariant() precondition.
src/coreclr/vm/jitinterface.cppPrevents JIT-EE from calling GetAsyncOtherVariant() for explicitly-async methods with no pair.
src/coreclr/tools/superpmi/superpmi-shim-collector/icorjitinfo.cppSimplifies SPMI interception/recording for getAsyncOtherVariant.
src/coreclr/tools/superpmi/superpmi-shared/methodcontext.hUpdates recorder signature to take bool instead of bool*.
src/coreclr/tools/superpmi/superpmi-shared/methodcontext.cppRecords variantIsThunk by value in the SPMI method context.
src/coreclr/inc/corinfo.hClarifies variantIsThunk meaning in API comment.

@jakobbotsch
jakobbotsch marked this pull request as ready for review March 5, 2026 17:54
@jakobbotsch
jakobbotsch merged commit c86ebf2 into dotnet:mainMar 6, 2026
113 checks passed
@jakobbotsch
jakobbotsch deleted the fix-spmi-async-variants branch March 6, 2026 00:13
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, '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('^' + ".*" + '
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Fix getAsyncOtherVariant JIT-EE implementation in VM - #125225

Merged
jakobbotsch merged 1 commit into
dotnet:mainfrom
jakobbotsch:fix-spmi-async-variants
Mar 6, 2026
Merged

Fix getAsyncOtherVariant JIT-EE implementation in VM#125225
jakobbotsch merged 1 commit into
dotnet:mainfrom
jakobbotsch:fix-spmi-async-variants

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We could end up calling GetAsyncOtherVariant for explicitly-async methods like AsyncHelpers.Await, which do not have other variants.
This was happening under EnableExtraSuperPmiQueries mode that queries both variants proactively. Also simplify SPMI implementation of the recording of this function.

We could end up calling GetAsyncOtherVariant for explicitly-async
methods like AsyncHelpers.Await, which do not have other variants.
CopilotAI review requested due to automatic review settings March 5, 2026 15:41
@github-actionsgithub-actionsBot added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Mar 5, 2026
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Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch
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Pull request overview

Fixes VM/JIT handling of async “other variant” lookups so explicitly-async (non-variant-paired) methods don’t trigger invalid GetAsyncOtherVariant calls, and streamlines SuperPMI recording for the query.

Changes:

  • Introduce MethodDesc::HasAsyncOtherVariant() and assert GetAsyncOtherVariant() is only used when a paired variant exists.
  • Update VM call sites (method table builder and JIT-EE getAsyncOtherVariant) to gate lookups on HasAsyncOtherVariant().
  • Simplify SuperPMI shim collector recording API for getAsyncOtherVariant.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file
FileDescription
src/coreclr/vm/methodtablebuilder.cppUses HasAsyncOtherVariant() to avoid requesting non-existent async variants during decl lookup.
src/coreclr/vm/method.hppAdds HasAsyncOtherVariant() and asserts GetAsyncOtherVariant() precondition.
src/coreclr/vm/jitinterface.cppPrevents JIT-EE from calling GetAsyncOtherVariant() for explicitly-async methods with no pair.
src/coreclr/tools/superpmi/superpmi-shim-collector/icorjitinfo.cppSimplifies SPMI interception/recording for getAsyncOtherVariant.
src/coreclr/tools/superpmi/superpmi-shared/methodcontext.hUpdates recorder signature to take bool instead of bool*.
src/coreclr/tools/superpmi/superpmi-shared/methodcontext.cppRecords variantIsThunk by value in the SPMI method context.
src/coreclr/inc/corinfo.hClarifies variantIsThunk meaning in API comment.

@jakobbotsch
jakobbotsch marked this pull request as ready for review March 5, 2026 17:54
@jakobbotsch
jakobbotsch merged commit c86ebf2 into dotnet:mainMar 6, 2026
113 checks passed
@jakobbotsch
jakobbotsch deleted the fix-spmi-async-variants branch March 6, 2026 00:13
@github-actionsgithub-actionsBot locked and limited conversation to collaborators Apr 5, 2026
Sign up for freeto subscribe to this conversation on GitHub. Already have an account? Sign in.

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3 participants

@jakobbotsch@jkotas
, '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

Fix getAsyncOtherVariant JIT-EE implementation in VM - #125225

Merged
jakobbotsch merged 1 commit into
dotnet:mainfrom
jakobbotsch:fix-spmi-async-variants
Mar 6, 2026
Merged

Fix getAsyncOtherVariant JIT-EE implementation in VM#125225
jakobbotsch merged 1 commit into
dotnet:mainfrom
jakobbotsch:fix-spmi-async-variants

Conversation

@jakobbotsch

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We could end up calling GetAsyncOtherVariant for explicitly-async methods like AsyncHelpers.Await, which do not have other variants.
This was happening under EnableExtraSuperPmiQueries mode that queries both variants proactively. Also simplify SPMI implementation of the recording of this function.

We could end up calling GetAsyncOtherVariant for explicitly-async
methods like AsyncHelpers.Await, which do not have other variants.
CopilotAI review requested due to automatic review settings March 5, 2026 15:41
@github-actionsgithub-actionsBot added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Mar 5, 2026
@dotnet-policy-service

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

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Pull request overview

Fixes VM/JIT handling of async “other variant” lookups so explicitly-async (non-variant-paired) methods don’t trigger invalid GetAsyncOtherVariant calls, and streamlines SuperPMI recording for the query.

Changes:

  • Introduce MethodDesc::HasAsyncOtherVariant() and assert GetAsyncOtherVariant() is only used when a paired variant exists.
  • Update VM call sites (method table builder and JIT-EE getAsyncOtherVariant) to gate lookups on HasAsyncOtherVariant().
  • Simplify SuperPMI shim collector recording API for getAsyncOtherVariant.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file
FileDescription
src/coreclr/vm/methodtablebuilder.cppUses HasAsyncOtherVariant() to avoid requesting non-existent async variants during decl lookup.
src/coreclr/vm/method.hppAdds HasAsyncOtherVariant() and asserts GetAsyncOtherVariant() precondition.
src/coreclr/vm/jitinterface.cppPrevents JIT-EE from calling GetAsyncOtherVariant() for explicitly-async methods with no pair.
src/coreclr/tools/superpmi/superpmi-shim-collector/icorjitinfo.cppSimplifies SPMI interception/recording for getAsyncOtherVariant.
src/coreclr/tools/superpmi/superpmi-shared/methodcontext.hUpdates recorder signature to take bool instead of bool*.
src/coreclr/tools/superpmi/superpmi-shared/methodcontext.cppRecords variantIsThunk by value in the SPMI method context.
src/coreclr/inc/corinfo.hClarifies variantIsThunk meaning in API comment.

@jakobbotsch
jakobbotsch marked this pull request as ready for review March 5, 2026 17:54
@jakobbotsch
jakobbotsch merged commit c86ebf2 into dotnet:mainMar 6, 2026
113 checks passed
@jakobbotsch
jakobbotsch deleted the fix-spmi-async-variants branch March 6, 2026 00:13
@github-actionsgithub-actionsBot locked and limited conversation to collaborators Apr 5, 2026
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 SuperPMIruntime-async

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Development

Successfully merging this pull request may close these issues.

3 participants

@jakobbotsch@jkotas