Fixup some Vector<T> function lookups to use the right name/type - #119068

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tannergooding merged 2 commits into
dotnet:mainfrom
tannergooding:fix-119066
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Fixup some Vector<T> function lookups to use the right name/type#119068
tannergooding merged 2 commits into
dotnet:mainfrom
tannergooding:fix-119066

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This resolves#119066 and resolves#118848

This will need backport to .NET 10

CopilotAI review requested due to automatic review settings August 25, 2025 15:39
@github-actionsgithub-actionsBot added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Aug 25, 2025
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Pull Request Overview

This PR fixes Vector function lookups to use the correct names and types in the JIT compiler. The changes address issues where comparison operations and the SquareRoot method were not being properly recognized by the intrinsic lookup system, which could lead to missed optimizations.

Key changes:

  • Added mapping from "SquareRoot" to "Sqrt" for method name lookup
  • Added HW_Flag_BaseTypeFromFirstArg flag to comparison intrinsics (Equals, GreaterThan, etc.) to ensure proper type resolution
  • Added regression test to verify Vector.LessThan functionality

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file
FileDescription
src/coreclr/jit/importercalls.cppAdded method name mapping for SquareRoot to Sqrt
src/coreclr/jit/hwintrinsiclistxarch.hAdded BaseTypeFromFirstArg flag to comparison intrinsics for x86/x64
src/coreclr/jit/hwintrinsiclistarm64.hAdded BaseTypeFromFirstArg flag to comparison intrinsics for ARM64
src/tests/JIT/Regression/JitBlue/Runtime_119008/Runtime_119008.csprojTest project configuration for regression test
src/tests/JIT/Regression/JitBlue/Runtime_119008/Runtime_119008.csRegression test verifying Vector.LessThan behavior

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/backport to release/10.0-rc1

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Started backporting to release/10.0-rc1: https://github.com/dotnet/runtime/actions/runs/17213927490

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tannergooding merged commit 8a3c2e4 into dotnet:mainAug 25, 2025
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/backport to release/10.0

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Started backporting to release/10.0: https://github.com/dotnet/runtime/actions/runs/17222455059

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Vector.LessThan fails for negative floating point numbers (NET10 Preview 7) Vector<T>.SquareRoot no longer vectorizing in .NET 10.0

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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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Fixup some Vector<T> function lookups to use the right name/type - #119068
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tannergooding merged 2 commits into
dotnet:mainfrom 
tannergooding:fix-119066
Aug 25, 2025
Merged
Fixup some Vector<T> function lookups to use the right name/type#119068
tannergooding merged 2 commits into
dotnet:mainfrom 
tannergooding:fix-119066
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This resolves#119066 and resolves#118848
This will need backport to .NET 10
CopilotAI
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Pull Request Overview
This PR fixes Vector function lookups to use the correct names and types in the JIT compiler. The changes address issues where comparison operations and the SquareRoot method were not being properly recognized by the intrinsic lookup system, which could lead to missed optimizations.
Key changes:
  • Added mapping from "SquareRoot" to "Sqrt" for method name lookup
  • Added HW_Flag_BaseTypeFromFirstArg flag to comparison intrinsics (Equals, GreaterThan, etc.) to ensure proper type resolution
  • Added regression test to verify Vector.LessThan functionality
Reviewed Changes
Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.
Show a summary per file
FileDescription
src/coreclr/jit/importercalls.cppAdded method name mapping for SquareRoot to Sqrt
src/coreclr/jit/hwintrinsiclistxarch.hAdded BaseTypeFromFirstArg flag to comparison intrinsics for x86/x64
src/coreclr/jit/hwintrinsiclistarm64.hAdded BaseTypeFromFirstArg flag to comparison intrinsics for ARM64
src/tests/JIT/Regression/JitBlue/Runtime_119008/Runtime_119008.csprojTest project configuration for regression test
src/tests/JIT/Regression/JitBlue/Runtime_119008/Runtime_119008.csRegression test verifying Vector.LessThan behavior
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Started backporting to release/10.0: https://github.com/dotnet/runtime/actions/runs/17222455059
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Vector.LessThan fails for negative floating point numbers (NET10 Preview 7)

Vector<T>.SquareRoot no longer vectorizing in .NET 10.0


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, '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('^' + ".*" + '

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Fixup some Vector<T> function lookups to use the right name/type - #119068
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tannergooding merged 2 commits into
dotnet:mainfrom 
tannergooding:fix-119066
Aug 25, 2025
Merged
Fixup some Vector<T> function lookups to use the right name/type#119068
tannergooding merged 2 commits into
dotnet:mainfrom 
tannergooding:fix-119066
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This resolves#119066 and resolves#118848
This will need backport to .NET 10
CopilotAI
review requested due to automatic review settings
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Pull Request Overview
This PR fixes Vector function lookups to use the correct names and types in the JIT compiler. The changes address issues where comparison operations and the SquareRoot method were not being properly recognized by the intrinsic lookup system, which could lead to missed optimizations.
Key changes:
  • Added mapping from "SquareRoot" to "Sqrt" for method name lookup
  • Added HW_Flag_BaseTypeFromFirstArg flag to comparison intrinsics (Equals, GreaterThan, etc.) to ensure proper type resolution
  • Added regression test to verify Vector.LessThan functionality
Reviewed Changes
Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.
Show a summary per file
FileDescription
src/coreclr/jit/importercalls.cppAdded method name mapping for SquareRoot to Sqrt
src/coreclr/jit/hwintrinsiclistxarch.hAdded BaseTypeFromFirstArg flag to comparison intrinsics for x86/x64
src/coreclr/jit/hwintrinsiclistarm64.hAdded BaseTypeFromFirstArg flag to comparison intrinsics for ARM64
src/tests/JIT/Regression/JitBlue/Runtime_119008/Runtime_119008.csprojTest project configuration for regression test
src/tests/JIT/Regression/JitBlue/Runtime_119008/Runtime_119008.csRegression test verifying Vector.LessThan behavior
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Started backporting to release/10.0-rc1: https://github.com/dotnet/runtime/actions/runs/17213927490
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merged commit 8a3c2e4
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@tannergooding
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fix-119066

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/backport to release/10.0
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Started backporting to release/10.0: https://github.com/dotnet/runtime/actions/runs/17222455059
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Vector.LessThan fails for negative floating point numbers (NET10 Preview 7)

Vector<T>.SquareRoot no longer vectorizing in .NET 10.0


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, '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('^' + ".*" + '

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Fixup some Vector<T> function lookups to use the right name/type - #119068
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dotnet:mainfrom 
tannergooding:fix-119066
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Fixup some Vector<T> function lookups to use the right name/type#119068
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This resolves#119066 and resolves#118848
This will need backport to .NET 10
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Pull Request Overview
This PR fixes Vector function lookups to use the correct names and types in the JIT compiler. The changes address issues where comparison operations and the SquareRoot method were not being properly recognized by the intrinsic lookup system, which could lead to missed optimizations.
Key changes:
  • Added mapping from "SquareRoot" to "Sqrt" for method name lookup
  • Added HW_Flag_BaseTypeFromFirstArg flag to comparison intrinsics (Equals, GreaterThan, etc.) to ensure proper type resolution
  • Added regression test to verify Vector.LessThan functionality
Reviewed Changes
Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.
Show a summary per file
FileDescription
src/coreclr/jit/importercalls.cppAdded method name mapping for SquareRoot to Sqrt
src/coreclr/jit/hwintrinsiclistxarch.hAdded BaseTypeFromFirstArg flag to comparison intrinsics for x86/x64
src/coreclr/jit/hwintrinsiclistarm64.hAdded BaseTypeFromFirstArg flag to comparison intrinsics for ARM64
src/tests/JIT/Regression/JitBlue/Runtime_119008/Runtime_119008.csprojTest project configuration for regression test
src/tests/JIT/Regression/JitBlue/Runtime_119008/Runtime_119008.csRegression test verifying Vector.LessThan behavior
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fix-119066

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Vector.LessThan fails for negative floating point numbers (NET10 Preview 7)

Vector<T>.SquareRoot no longer vectorizing in .NET 10.0


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, '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
Fixup some Vector<T> function lookups to use the right name/type - #119068
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dotnet:mainfrom 
tannergooding:fix-119066
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Fixup some Vector<T> function lookups to use the right name/type#119068
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This resolves#119066 and resolves#118848
This will need backport to .NET 10
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Pull Request Overview
This PR fixes Vector function lookups to use the correct names and types in the JIT compiler. The changes address issues where comparison operations and the SquareRoot method were not being properly recognized by the intrinsic lookup system, which could lead to missed optimizations.
Key changes:
  • Added mapping from "SquareRoot" to "Sqrt" for method name lookup
  • Added HW_Flag_BaseTypeFromFirstArg flag to comparison intrinsics (Equals, GreaterThan, etc.) to ensure proper type resolution
  • Added regression test to verify Vector.LessThan functionality
Reviewed Changes
Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.
Show a summary per file
FileDescription
src/coreclr/jit/importercalls.cppAdded method name mapping for SquareRoot to Sqrt
src/coreclr/jit/hwintrinsiclistxarch.hAdded BaseTypeFromFirstArg flag to comparison intrinsics for x86/x64
src/coreclr/jit/hwintrinsiclistarm64.hAdded BaseTypeFromFirstArg flag to comparison intrinsics for ARM64
src/tests/JIT/Regression/JitBlue/Runtime_119008/Runtime_119008.csprojTest project configuration for regression test
src/tests/JIT/Regression/JitBlue/Runtime_119008/Runtime_119008.csRegression test verifying Vector.LessThan behavior
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Vector.LessThan fails for negative floating point numbers (NET10 Preview 7)

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, '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
Fixup some Vector<T> function lookups to use the right name/type - #119068
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tannergooding:fix-119066
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Fixup some Vector<T> function lookups to use the right name/type#119068
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This resolves#119066 and resolves#118848
This will need backport to .NET 10
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Pull Request Overview
This PR fixes Vector function lookups to use the correct names and types in the JIT compiler. The changes address issues where comparison operations and the SquareRoot method were not being properly recognized by the intrinsic lookup system, which could lead to missed optimizations.
Key changes:
  • Added mapping from "SquareRoot" to "Sqrt" for method name lookup
  • Added HW_Flag_BaseTypeFromFirstArg flag to comparison intrinsics (Equals, GreaterThan, etc.) to ensure proper type resolution
  • Added regression test to verify Vector.LessThan functionality
Reviewed Changes
Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.
Show a summary per file
FileDescription
src/coreclr/jit/importercalls.cppAdded method name mapping for SquareRoot to Sqrt
src/coreclr/jit/hwintrinsiclistxarch.hAdded BaseTypeFromFirstArg flag to comparison intrinsics for x86/x64
src/coreclr/jit/hwintrinsiclistarm64.hAdded BaseTypeFromFirstArg flag to comparison intrinsics for ARM64
src/tests/JIT/Regression/JitBlue/Runtime_119008/Runtime_119008.csprojTest project configuration for regression test
src/tests/JIT/Regression/JitBlue/Runtime_119008/Runtime_119008.csRegression test verifying Vector.LessThan behavior
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Vector.LessThan fails for negative floating point numbers (NET10 Preview 7)

Vector<T>.SquareRoot no longer vectorizing in .NET 10.0


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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('^' + ".*" + '

Skip to content
Fixup some Vector<T> function lookups to use the right name/type - #119068
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dotnet:mainfrom 
tannergooding:fix-119066
Aug 25, 2025
Merged
Fixup some Vector<T> function lookups to use the right name/type#119068
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tannergooding:fix-119066
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This resolves#119066 and resolves#118848
This will need backport to .NET 10
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Pull Request Overview
This PR fixes Vector function lookups to use the correct names and types in the JIT compiler. The changes address issues where comparison operations and the SquareRoot method were not being properly recognized by the intrinsic lookup system, which could lead to missed optimizations.
Key changes:
  • Added mapping from "SquareRoot" to "Sqrt" for method name lookup
  • Added HW_Flag_BaseTypeFromFirstArg flag to comparison intrinsics (Equals, GreaterThan, etc.) to ensure proper type resolution
  • Added regression test to verify Vector.LessThan functionality
Reviewed Changes
Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.
Show a summary per file
FileDescription
src/coreclr/jit/importercalls.cppAdded method name mapping for SquareRoot to Sqrt
src/coreclr/jit/hwintrinsiclistxarch.hAdded BaseTypeFromFirstArg flag to comparison intrinsics for x86/x64
src/coreclr/jit/hwintrinsiclistarm64.hAdded BaseTypeFromFirstArg flag to comparison intrinsics for ARM64
src/tests/JIT/Regression/JitBlue/Runtime_119008/Runtime_119008.csprojTest project configuration for regression test
src/tests/JIT/Regression/JitBlue/Runtime_119008/Runtime_119008.csRegression test verifying Vector.LessThan behavior
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@tannergooding
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fix-119066

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/backport to release/10.0
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Started backporting to release/10.0: https://github.com/dotnet/runtime/actions/runs/17222455059
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Vector.LessThan fails for negative floating point numbers (NET10 Preview 7)

Vector<T>.SquareRoot no longer vectorizing in .NET 10.0


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, '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); }
})();
})();

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Fixup some Vector<T> function lookups to use the right name/type - #119068
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dotnet:mainfrom 
tannergooding:fix-119066
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Merged
Fixup some Vector<T> function lookups to use the right name/type#119068
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This resolves#119066 and resolves#118848
This will need backport to .NET 10
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Pull Request Overview
This PR fixes Vector function lookups to use the correct names and types in the JIT compiler. The changes address issues where comparison operations and the SquareRoot method were not being properly recognized by the intrinsic lookup system, which could lead to missed optimizations.
Key changes:
  • Added mapping from "SquareRoot" to "Sqrt" for method name lookup
  • Added HW_Flag_BaseTypeFromFirstArg flag to comparison intrinsics (Equals, GreaterThan, etc.) to ensure proper type resolution
  • Added regression test to verify Vector.LessThan functionality
Reviewed Changes
Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.
Show a summary per file
FileDescription
src/coreclr/jit/importercalls.cppAdded method name mapping for SquareRoot to Sqrt
src/coreclr/jit/hwintrinsiclistxarch.hAdded BaseTypeFromFirstArg flag to comparison intrinsics for x86/x64
src/coreclr/jit/hwintrinsiclistarm64.hAdded BaseTypeFromFirstArg flag to comparison intrinsics for ARM64
src/tests/JIT/Regression/JitBlue/Runtime_119008/Runtime_119008.csprojTest project configuration for regression test
src/tests/JIT/Regression/JitBlue/Runtime_119008/Runtime_119008.csRegression test verifying Vector.LessThan behavior
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Vector.LessThan fails for negative floating point numbers (NET10 Preview 7)

Vector<T>.SquareRoot no longer vectorizing in .NET 10.0


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