Extend Linux perf jitdump functionality #13540

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Extend Linux perf jitdump functionality#13540
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area-Diagnostics-coreclrenhancementProduct code improvement that does NOT require public API changes/additionshelp wanted[up-for-grabs] Good issue for external contributorsos-linuxLinux OS (any supported distro)
Milestone
Future

Description

@sdmaclea
sdmaclea
opened on Oct 7, 2019

#13462 Added basic support for generating the Linux perf jitdump format. The initial implementation did not include support for adding:

  • Debug info - JIT_CODE_DEBUG_INFO. Provide assembly to line number info to improve annotation.
  • Unwinding info - JIT_CODE_UNWINDING_INFO. Adds dwarf unwind info. This allows/improves recording with the --callgraph dwarf option.

Consider adding these records to improve value of perf jitdump support.

Implementation Notes:

  • JIT_CODE_DEBUG_INFO & JIT_CODE_UNWINDING_INFO each apply to the next JIT_CODE_LOAD record. This means to properly support multithreading, the information needs to be provide when generating the JIT_CODE_LOAD record

  • The FEATURE_GDBJIT probably already needs similar info to construct the elf files it passes to gdb. src/vm/gdbjit.cpp may be instructive.

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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" + '

      Skip to content
      Extend Linux perf jitdump functionality #13540
      Closed
      Closed
      Extend Linux perf jitdump functionality#13540
      Labels
      area-Diagnostics-coreclrenhancementProduct code improvement that does NOT require public API changes/additionshelp wanted[up-for-grabs] Good issue for external contributorsos-linuxLinux OS (any supported distro)
      Milestone
      Future
      Description
      @sdmaclea
      sdmaclea
      opened on Oct 7, 2019
      #13462 Added basic support for generating the Linux perf jitdump format. The initial implementation did not include support for adding:
      • Debug info - JIT_CODE_DEBUG_INFO. Provide assembly to line number info to improve annotation.
      • Unwinding info - JIT_CODE_UNWINDING_INFO. Adds dwarf unwind info. This allows/improves recording with the --callgraph dwarf option.
      Consider adding these records to improve value of perf jitdump support.
      Implementation Notes:
      • JIT_CODE_DEBUG_INFO & JIT_CODE_UNWINDING_INFO each apply to the next JIT_CODE_LOAD record. This means to properly support multithreading, the information needs to be provide when generating the JIT_CODE_LOAD record
      • The FEATURE_GDBJIT probably already needs similar info to construct the elf files it passes to gdb. src/vm/gdbjit.cpp may be instructive.
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        area-Diagnostics-coreclrenhancementProduct code improvement that does NOT require public API changes/additionshelp wanted[up-for-grabs] Good issue for external contributorsos-linuxLinux OS (any supported distro)
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          None yet
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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('^' + ".*" + '

          Skip to content
          Extend Linux perf jitdump functionality #13540
          Closed
          Closed
          Extend Linux perf jitdump functionality#13540
          Labels
          area-Diagnostics-coreclrenhancementProduct code improvement that does NOT require public API changes/additionshelp wanted[up-for-grabs] Good issue for external contributorsos-linuxLinux OS (any supported distro)
          Milestone
          Future
          Description
          @sdmaclea
          sdmaclea
          opened on Oct 7, 2019
          #13462 Added basic support for generating the Linux perf jitdump format. The initial implementation did not include support for adding:
          • Debug info - JIT_CODE_DEBUG_INFO. Provide assembly to line number info to improve annotation.
          • Unwinding info - JIT_CODE_UNWINDING_INFO. Adds dwarf unwind info. This allows/improves recording with the --callgraph dwarf option.
          Consider adding these records to improve value of perf jitdump support.
          Implementation Notes:
          • JIT_CODE_DEBUG_INFO & JIT_CODE_UNWINDING_INFO each apply to the next JIT_CODE_LOAD record. This means to properly support multithreading, the information needs to be provide when generating the JIT_CODE_LOAD record
          • The FEATURE_GDBJIT probably already needs similar info to construct the elf files it passes to gdb. src/vm/gdbjit.cpp may be instructive.
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            area-Diagnostics-coreclrenhancementProduct code improvement that does NOT require public API changes/additionshelp wanted[up-for-grabs] Good issue for external contributorsos-linuxLinux OS (any supported distro)
            Type
            No type
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            No projects
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              None yet
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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('^' + ".*" + '

              Skip to content
              Extend Linux perf jitdump functionality #13540
              Closed
              Closed
              Extend Linux perf jitdump functionality#13540
              Labels
              area-Diagnostics-coreclrenhancementProduct code improvement that does NOT require public API changes/additionshelp wanted[up-for-grabs] Good issue for external contributorsos-linuxLinux OS (any supported distro)
              Milestone
              Future
              Description
              @sdmaclea
              sdmaclea
              opened on Oct 7, 2019
              #13462 Added basic support for generating the Linux perf jitdump format. The initial implementation did not include support for adding:
              • Debug info - JIT_CODE_DEBUG_INFO. Provide assembly to line number info to improve annotation.
              • Unwinding info - JIT_CODE_UNWINDING_INFO. Adds dwarf unwind info. This allows/improves recording with the --callgraph dwarf option.
              Consider adding these records to improve value of perf jitdump support.
              Implementation Notes:
              • JIT_CODE_DEBUG_INFO & JIT_CODE_UNWINDING_INFO each apply to the next JIT_CODE_LOAD record. This means to properly support multithreading, the information needs to be provide when generating the JIT_CODE_LOAD record
              • The FEATURE_GDBJIT probably already needs similar info to construct the elf files it passes to gdb. src/vm/gdbjit.cpp may be instructive.
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                area-Diagnostics-coreclrenhancementProduct code improvement that does NOT require public API changes/additionshelp wanted[up-for-grabs] Good issue for external contributorsos-linuxLinux OS (any supported distro)
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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
                  Extend Linux perf jitdump functionality #13540
                  Closed
                  Closed
                  Extend Linux perf jitdump functionality#13540
                  Labels
                  area-Diagnostics-coreclrenhancementProduct code improvement that does NOT require public API changes/additionshelp wanted[up-for-grabs] Good issue for external contributorsos-linuxLinux OS (any supported distro)
                  Milestone
                  Future
                  Description
                  @sdmaclea
                  sdmaclea
                  opened on Oct 7, 2019
                  #13462 Added basic support for generating the Linux perf jitdump format. The initial implementation did not include support for adding:
                  • Debug info - JIT_CODE_DEBUG_INFO. Provide assembly to line number info to improve annotation.
                  • Unwinding info - JIT_CODE_UNWINDING_INFO. Adds dwarf unwind info. This allows/improves recording with the --callgraph dwarf option.
                  Consider adding these records to improve value of perf jitdump support.
                  Implementation Notes:
                  • JIT_CODE_DEBUG_INFO & JIT_CODE_UNWINDING_INFO each apply to the next JIT_CODE_LOAD record. This means to properly support multithreading, the information needs to be provide when generating the JIT_CODE_LOAD record
                  • The FEATURE_GDBJIT probably already needs similar info to construct the elf files it passes to gdb. src/vm/gdbjit.cpp may be instructive.
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                    Labels
                    area-Diagnostics-coreclrenhancementProduct code improvement that does NOT require public API changes/additionshelp wanted[up-for-grabs] Good issue for external contributorsos-linuxLinux OS (any supported distro)
                    Type
                    No type
                    Projects
                    No projects
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                      None yet
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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
                      Extend Linux perf jitdump functionality #13540
                      Closed
                      Closed
                      Extend Linux perf jitdump functionality#13540
                      Labels
                      area-Diagnostics-coreclrenhancementProduct code improvement that does NOT require public API changes/additionshelp wanted[up-for-grabs] Good issue for external contributorsos-linuxLinux OS (any supported distro)
                      Milestone
                      Future
                      Description
                      @sdmaclea
                      sdmaclea
                      opened on Oct 7, 2019
                      #13462 Added basic support for generating the Linux perf jitdump format. The initial implementation did not include support for adding:
                      • Debug info - JIT_CODE_DEBUG_INFO. Provide assembly to line number info to improve annotation.
                      • Unwinding info - JIT_CODE_UNWINDING_INFO. Adds dwarf unwind info. This allows/improves recording with the --callgraph dwarf option.
                      Consider adding these records to improve value of perf jitdump support.
                      Implementation Notes:
                      • JIT_CODE_DEBUG_INFO & JIT_CODE_UNWINDING_INFO each apply to the next JIT_CODE_LOAD record. This means to properly support multithreading, the information needs to be provide when generating the JIT_CODE_LOAD record
                      • The FEATURE_GDBJIT probably already needs similar info to construct the elf files it passes to gdb. src/vm/gdbjit.cpp may be instructive.
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                        Labels
                        area-Diagnostics-coreclrenhancementProduct code improvement that does NOT require public API changes/additionshelp wanted[up-for-grabs] Good issue for external contributorsos-linuxLinux OS (any supported distro)
                        Type
                        No type
                        Projects
                        No projects
                          Milestone
                          Relationships
                          None yet
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                          No branches or pull requests
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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
                          Extend Linux perf jitdump functionality #13540
                          Closed
                          Closed
                          Extend Linux perf jitdump functionality#13540
                          Labels
                          area-Diagnostics-coreclrenhancementProduct code improvement that does NOT require public API changes/additionshelp wanted[up-for-grabs] Good issue for external contributorsos-linuxLinux OS (any supported distro)
                          Milestone
                          Future
                          Description
                          @sdmaclea
                          sdmaclea
                          opened on Oct 7, 2019
                          #13462 Added basic support for generating the Linux perf jitdump format. The initial implementation did not include support for adding:
                          • Debug info - JIT_CODE_DEBUG_INFO. Provide assembly to line number info to improve annotation.
                          • Unwinding info - JIT_CODE_UNWINDING_INFO. Adds dwarf unwind info. This allows/improves recording with the --callgraph dwarf option.
                          Consider adding these records to improve value of perf jitdump support.
                          Implementation Notes:
                          • JIT_CODE_DEBUG_INFO & JIT_CODE_UNWINDING_INFO each apply to the next JIT_CODE_LOAD record. This means to properly support multithreading, the information needs to be provide when generating the JIT_CODE_LOAD record
                          • The FEATURE_GDBJIT probably already needs similar info to construct the elf files it passes to gdb. src/vm/gdbjit.cpp may be instructive.
                          Metadata
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                            Labels
                            area-Diagnostics-coreclrenhancementProduct code improvement that does NOT require public API changes/additionshelp wanted[up-for-grabs] Good issue for external contributorsos-linuxLinux OS (any supported distro)
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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); }
})();
})();

                              Skip to content
                              Extend Linux perf jitdump functionality #13540
                              Closed
                              Closed
                              Extend Linux perf jitdump functionality#13540
                              Labels
                              area-Diagnostics-coreclrenhancementProduct code improvement that does NOT require public API changes/additionshelp wanted[up-for-grabs] Good issue for external contributorsos-linuxLinux OS (any supported distro)
                              Milestone
                              Future
                              Description
                              @sdmaclea
                              sdmaclea
                              opened on Oct 7, 2019
                              #13462 Added basic support for generating the Linux perf jitdump format. The initial implementation did not include support for adding:
                              • Debug info - JIT_CODE_DEBUG_INFO. Provide assembly to line number info to improve annotation.
                              • Unwinding info - JIT_CODE_UNWINDING_INFO. Adds dwarf unwind info. This allows/improves recording with the --callgraph dwarf option.
                              Consider adding these records to improve value of perf jitdump support.
                              Implementation Notes:
                              • JIT_CODE_DEBUG_INFO & JIT_CODE_UNWINDING_INFO each apply to the next JIT_CODE_LOAD record. This means to properly support multithreading, the information needs to be provide when generating the JIT_CODE_LOAD record
                              • The FEATURE_GDBJIT probably already needs similar info to construct the elf files it passes to gdb. src/vm/gdbjit.cpp may be instructive.
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                                area-Diagnostics-coreclrenhancementProduct code improvement that does NOT require public API changes/additionshelp wanted[up-for-grabs] Good issue for external contributorsos-linuxLinux OS (any supported distro)
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                                No type
                                Projects
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