Isolating JITDbl2Ulng helper changes - #86175

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khushal1996 wants to merge 13 commits into
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khushal1996:kcm-avx512-scalar-convert-draft-pr
Closed

Isolating JITDbl2Ulng helper changes#86175
khushal1996 wants to merge 13 commits into
dotnet:mainfrom
khushal1996:kcm-avx512-scalar-convert-draft-pr

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@khushal1996khushal1996 commented May 12, 2023

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Draft PR for testing purposes. No need for review at this time.

Isolating the helper function changes to make sure that the helper function is working fine. This is w.r.t. the draft PR #84384

This PR optimize the following cases:


CasePrevious CodeOptimized Instruction
float -> ulongCORINFO_HELP_DBL2ULNG Helpervcvttss2usi
publicstaticUInt64FloatToULong(floatval){return(UInt64)val;}

Assembly before optimization

G_M22196_IG01: ;; offset=0000H 4883EC28 subrsp,40 C5F877 vzeroupper ;; size=7 bbWeight=1 PerfScore 1.25G_M22196_IG02: ;; offset=0007H 62F17E085AC0 vcvtss2sd xmm0,xmm0 E87E57815E call CORINFO_HELP_DBL2ULNG90nop ;; size=12 bbWeight=1 PerfScore 5.25G_M22196_IG03: ;; offset=0013H 4883C428 addrsp,40 C3 ret ;; size=5 bbWeight=1 PerfScore 1.25

Assembly afteroptimization

G_M22196_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M22196_IG02: ;; offset=0003H 62F1FE0878C0 vcvttss2usirax,xmm0 ;; size=6 bbWeight=1 PerfScore 6.00G_M22196_IG03: ;; offset=0009H C3 ret

CasePrevious CodeOptimized Instruction
double -> ulongCORINFO_HELP_DBL2ULNG Helpervcvttsd2usi
publicstaticUInt64DoubleToULong(doubleval){return(UInt64)val;}

Assembly before optimization

G_M30068_IG01: ;; offset=0000H 4883EC28 subrsp,40 C5F877 vzeroupper ;; size=7 bbWeight=1 PerfScore 1.25G_M30068_IG02: ;; offset=0007H E874577F5E call CORINFO_HELP_DBL2ULNG90nop ;; size=6 bbWeight=1 PerfScore 1.25G_M30068_IG03: ;; offset=000DH 4883C428 addrsp,40 C3 ret

Assembly afteroptimization

G_M30068_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M30068_IG02: ;; offset=0003H 62F1FF0878C0 vcvttsd2usirax,xmm0 ;; size=6 bbWeight=1 PerfScore 5.00G_M30068_IG03: ;; offset=0009H C3 ret

CasePrevious CodeOptimized Instruction
ulong -> doublevcvtsi2sdvcvtusi2sd
publicstaticdoubleUIntToDouble(UInt64val){return(double)val;}

Assembly before optimization

G_M33997_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M33997_IG02: ;; offset=0003H 62F17C0857C0 vxorps xmm0,xmm0 62F1FF082AC1 vcvtsi2sd xmm0,rcx 4885C9 testrcx,rcx 7D0A jge SHORT G_M33997_IG03 62F1FF08580502000000 vaddsd xmm0, qword ptr [reloc @RWD00] ;; size=27 bbWeight=1 PerfScore 12.58G_M33997_IG03: ;; offset=001EH C3 ret

Assembly afteroptimization

G_M33997_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M33997_IG02: ;; offset=0003H 62F1FF087BC1 vcvtusi2sdxmm0,rcx ;; size=6 bbWeight=1 PerfScore 4.00G_M33997_IG03: ;; offset=0009H C3 ret

…vtsd2usi uses ulong.max_value to show FPE for negative, NAN and ulong_max + 1 values.
…architecture. This is because we have changed the JITDbl2Ulng helper function to mimic the new IEEE compliant AVX512 instruction vcvtsd2usi. In the process, we needed to update the library test case because the default Floating Point Error (FPE) value for the new instruction is different from the default MSVC FPE value i.e. 0.
…not changing the library test case but the API to make sure NaN cases are handled.
@ghostghost added area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI community-contribution Indicates that the PR has been added by a community member labels May 12, 2023
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Issue Details

Draft PR for testing purposes. No need for review at this time.

Author:khushal1996
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Milestone:-

… a special handling for vcvttss2usi64 to make sure we read only dword instead of qword for float to ulong conversion
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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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Isolating JITDbl2Ulng helper changes - #86175

Closed
khushal1996 wants to merge 13 commits into
dotnet:mainfrom
khushal1996:kcm-avx512-scalar-convert-draft-pr
Closed

Isolating JITDbl2Ulng helper changes#86175
khushal1996 wants to merge 13 commits into
dotnet:mainfrom
khushal1996:kcm-avx512-scalar-convert-draft-pr

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@khushal1996

@khushal1996khushal1996 commented May 12, 2023

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Draft PR for testing purposes. No need for review at this time.

Isolating the helper function changes to make sure that the helper function is working fine. This is w.r.t. the draft PR #84384

This PR optimize the following cases:


CasePrevious CodeOptimized Instruction
float -> ulongCORINFO_HELP_DBL2ULNG Helpervcvttss2usi
publicstaticUInt64FloatToULong(floatval){return(UInt64)val;}

Assembly before optimization

G_M22196_IG01: ;; offset=0000H 4883EC28 subrsp,40 C5F877 vzeroupper ;; size=7 bbWeight=1 PerfScore 1.25G_M22196_IG02: ;; offset=0007H 62F17E085AC0 vcvtss2sd xmm0,xmm0 E87E57815E call CORINFO_HELP_DBL2ULNG90nop ;; size=12 bbWeight=1 PerfScore 5.25G_M22196_IG03: ;; offset=0013H 4883C428 addrsp,40 C3 ret ;; size=5 bbWeight=1 PerfScore 1.25

Assembly afteroptimization

G_M22196_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M22196_IG02: ;; offset=0003H 62F1FE0878C0 vcvttss2usirax,xmm0 ;; size=6 bbWeight=1 PerfScore 6.00G_M22196_IG03: ;; offset=0009H C3 ret

CasePrevious CodeOptimized Instruction
double -> ulongCORINFO_HELP_DBL2ULNG Helpervcvttsd2usi
publicstaticUInt64DoubleToULong(doubleval){return(UInt64)val;}

Assembly before optimization

G_M30068_IG01: ;; offset=0000H 4883EC28 subrsp,40 C5F877 vzeroupper ;; size=7 bbWeight=1 PerfScore 1.25G_M30068_IG02: ;; offset=0007H E874577F5E call CORINFO_HELP_DBL2ULNG90nop ;; size=6 bbWeight=1 PerfScore 1.25G_M30068_IG03: ;; offset=000DH 4883C428 addrsp,40 C3 ret

Assembly afteroptimization

G_M30068_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M30068_IG02: ;; offset=0003H 62F1FF0878C0 vcvttsd2usirax,xmm0 ;; size=6 bbWeight=1 PerfScore 5.00G_M30068_IG03: ;; offset=0009H C3 ret

CasePrevious CodeOptimized Instruction
ulong -> doublevcvtsi2sdvcvtusi2sd
publicstaticdoubleUIntToDouble(UInt64val){return(double)val;}

Assembly before optimization

G_M33997_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M33997_IG02: ;; offset=0003H 62F17C0857C0 vxorps xmm0,xmm0 62F1FF082AC1 vcvtsi2sd xmm0,rcx 4885C9 testrcx,rcx 7D0A jge SHORT G_M33997_IG03 62F1FF08580502000000 vaddsd xmm0, qword ptr [reloc @RWD00] ;; size=27 bbWeight=1 PerfScore 12.58G_M33997_IG03: ;; offset=001EH C3 ret

Assembly afteroptimization

G_M33997_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M33997_IG02: ;; offset=0003H 62F1FF087BC1 vcvtusi2sdxmm0,rcx ;; size=6 bbWeight=1 PerfScore 4.00G_M33997_IG03: ;; offset=0009H C3 ret

…vtsd2usi uses ulong.max_value to show FPE for negative, NAN and ulong_max + 1 values.
…architecture. This is because we have changed the JITDbl2Ulng helper function to mimic the new IEEE compliant AVX512 instruction vcvtsd2usi. In the process, we needed to update the library test case because the default Floating Point Error (FPE) value for the new instruction is different from the default MSVC FPE value i.e. 0.
…not changing the library test case but the API to make sure NaN cases are handled.
@ghostghost added area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI community-contribution Indicates that the PR has been added by a community member labels May 12, 2023
@ghost

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

Issue Details

Draft PR for testing purposes. No need for review at this time.

Author:khushal1996
Assignees:-
Labels:

area-CodeGen-coreclr, community-contribution

Milestone:-

… a special handling for vcvttss2usi64 to make sure we read only dword instead of qword for float to ulong conversion
@ghostghost locked as resolved and limited conversation to collaborators Jun 18, 2023
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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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Isolating JITDbl2Ulng helper changes - #86175

Closed
khushal1996 wants to merge 13 commits into
dotnet:mainfrom
khushal1996:kcm-avx512-scalar-convert-draft-pr
Closed

Isolating JITDbl2Ulng helper changes#86175
khushal1996 wants to merge 13 commits into
dotnet:mainfrom
khushal1996:kcm-avx512-scalar-convert-draft-pr

Conversation

@khushal1996

@khushal1996khushal1996 commented May 12, 2023

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Draft PR for testing purposes. No need for review at this time.

Isolating the helper function changes to make sure that the helper function is working fine. This is w.r.t. the draft PR #84384

This PR optimize the following cases:


CasePrevious CodeOptimized Instruction
float -> ulongCORINFO_HELP_DBL2ULNG Helpervcvttss2usi
publicstaticUInt64FloatToULong(floatval){return(UInt64)val;}

Assembly before optimization

G_M22196_IG01: ;; offset=0000H 4883EC28 subrsp,40 C5F877 vzeroupper ;; size=7 bbWeight=1 PerfScore 1.25G_M22196_IG02: ;; offset=0007H 62F17E085AC0 vcvtss2sd xmm0,xmm0 E87E57815E call CORINFO_HELP_DBL2ULNG90nop ;; size=12 bbWeight=1 PerfScore 5.25G_M22196_IG03: ;; offset=0013H 4883C428 addrsp,40 C3 ret ;; size=5 bbWeight=1 PerfScore 1.25

Assembly afteroptimization

G_M22196_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M22196_IG02: ;; offset=0003H 62F1FE0878C0 vcvttss2usirax,xmm0 ;; size=6 bbWeight=1 PerfScore 6.00G_M22196_IG03: ;; offset=0009H C3 ret

CasePrevious CodeOptimized Instruction
double -> ulongCORINFO_HELP_DBL2ULNG Helpervcvttsd2usi
publicstaticUInt64DoubleToULong(doubleval){return(UInt64)val;}

Assembly before optimization

G_M30068_IG01: ;; offset=0000H 4883EC28 subrsp,40 C5F877 vzeroupper ;; size=7 bbWeight=1 PerfScore 1.25G_M30068_IG02: ;; offset=0007H E874577F5E call CORINFO_HELP_DBL2ULNG90nop ;; size=6 bbWeight=1 PerfScore 1.25G_M30068_IG03: ;; offset=000DH 4883C428 addrsp,40 C3 ret

Assembly afteroptimization

G_M30068_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M30068_IG02: ;; offset=0003H 62F1FF0878C0 vcvttsd2usirax,xmm0 ;; size=6 bbWeight=1 PerfScore 5.00G_M30068_IG03: ;; offset=0009H C3 ret

CasePrevious CodeOptimized Instruction
ulong -> doublevcvtsi2sdvcvtusi2sd
publicstaticdoubleUIntToDouble(UInt64val){return(double)val;}

Assembly before optimization

G_M33997_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M33997_IG02: ;; offset=0003H 62F17C0857C0 vxorps xmm0,xmm0 62F1FF082AC1 vcvtsi2sd xmm0,rcx 4885C9 testrcx,rcx 7D0A jge SHORT G_M33997_IG03 62F1FF08580502000000 vaddsd xmm0, qword ptr [reloc @RWD00] ;; size=27 bbWeight=1 PerfScore 12.58G_M33997_IG03: ;; offset=001EH C3 ret

Assembly afteroptimization

G_M33997_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M33997_IG02: ;; offset=0003H 62F1FF087BC1 vcvtusi2sdxmm0,rcx ;; size=6 bbWeight=1 PerfScore 4.00G_M33997_IG03: ;; offset=0009H C3 ret

…vtsd2usi uses ulong.max_value to show FPE for negative, NAN and ulong_max + 1 values.
…architecture. This is because we have changed the JITDbl2Ulng helper function to mimic the new IEEE compliant AVX512 instruction vcvtsd2usi. In the process, we needed to update the library test case because the default Floating Point Error (FPE) value for the new instruction is different from the default MSVC FPE value i.e. 0.
…not changing the library test case but the API to make sure NaN cases are handled.
@ghostghost added area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI community-contribution Indicates that the PR has been added by a community member labels May 12, 2023
@ghost

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

Issue Details

Draft PR for testing purposes. No need for review at this time.

Author:khushal1996
Assignees:-
Labels:

area-CodeGen-coreclr, community-contribution

Milestone:-

… a special handling for vcvttss2usi64 to make sure we read only dword instead of qword for float to ulong conversion
@ghostghost locked as resolved and limited conversation to collaborators Jun 18, 2023
Sign up for freeto subscribe to this conversation on GitHub. Already have an account? Sign in.

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Development

Successfully merging this pull request may close these issues.

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@khushal1996
, '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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Isolating JITDbl2Ulng helper changes - #86175

Closed
khushal1996 wants to merge 13 commits into
dotnet:mainfrom
khushal1996:kcm-avx512-scalar-convert-draft-pr
Closed

Isolating JITDbl2Ulng helper changes#86175
khushal1996 wants to merge 13 commits into
dotnet:mainfrom
khushal1996:kcm-avx512-scalar-convert-draft-pr

Conversation

@khushal1996

@khushal1996khushal1996 commented May 12, 2023

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Draft PR for testing purposes. No need for review at this time.

Isolating the helper function changes to make sure that the helper function is working fine. This is w.r.t. the draft PR #84384

This PR optimize the following cases:


CasePrevious CodeOptimized Instruction
float -> ulongCORINFO_HELP_DBL2ULNG Helpervcvttss2usi
publicstaticUInt64FloatToULong(floatval){return(UInt64)val;}

Assembly before optimization

G_M22196_IG01: ;; offset=0000H 4883EC28 subrsp,40 C5F877 vzeroupper ;; size=7 bbWeight=1 PerfScore 1.25G_M22196_IG02: ;; offset=0007H 62F17E085AC0 vcvtss2sd xmm0,xmm0 E87E57815E call CORINFO_HELP_DBL2ULNG90nop ;; size=12 bbWeight=1 PerfScore 5.25G_M22196_IG03: ;; offset=0013H 4883C428 addrsp,40 C3 ret ;; size=5 bbWeight=1 PerfScore 1.25

Assembly afteroptimization

G_M22196_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M22196_IG02: ;; offset=0003H 62F1FE0878C0 vcvttss2usirax,xmm0 ;; size=6 bbWeight=1 PerfScore 6.00G_M22196_IG03: ;; offset=0009H C3 ret

CasePrevious CodeOptimized Instruction
double -> ulongCORINFO_HELP_DBL2ULNG Helpervcvttsd2usi
publicstaticUInt64DoubleToULong(doubleval){return(UInt64)val;}

Assembly before optimization

G_M30068_IG01: ;; offset=0000H 4883EC28 subrsp,40 C5F877 vzeroupper ;; size=7 bbWeight=1 PerfScore 1.25G_M30068_IG02: ;; offset=0007H E874577F5E call CORINFO_HELP_DBL2ULNG90nop ;; size=6 bbWeight=1 PerfScore 1.25G_M30068_IG03: ;; offset=000DH 4883C428 addrsp,40 C3 ret

Assembly afteroptimization

G_M30068_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M30068_IG02: ;; offset=0003H 62F1FF0878C0 vcvttsd2usirax,xmm0 ;; size=6 bbWeight=1 PerfScore 5.00G_M30068_IG03: ;; offset=0009H C3 ret

CasePrevious CodeOptimized Instruction
ulong -> doublevcvtsi2sdvcvtusi2sd
publicstaticdoubleUIntToDouble(UInt64val){return(double)val;}

Assembly before optimization

G_M33997_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M33997_IG02: ;; offset=0003H 62F17C0857C0 vxorps xmm0,xmm0 62F1FF082AC1 vcvtsi2sd xmm0,rcx 4885C9 testrcx,rcx 7D0A jge SHORT G_M33997_IG03 62F1FF08580502000000 vaddsd xmm0, qword ptr [reloc @RWD00] ;; size=27 bbWeight=1 PerfScore 12.58G_M33997_IG03: ;; offset=001EH C3 ret

Assembly afteroptimization

G_M33997_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M33997_IG02: ;; offset=0003H 62F1FF087BC1 vcvtusi2sdxmm0,rcx ;; size=6 bbWeight=1 PerfScore 4.00G_M33997_IG03: ;; offset=0009H C3 ret

…vtsd2usi uses ulong.max_value to show FPE for negative, NAN and ulong_max + 1 values.
…architecture. This is because we have changed the JITDbl2Ulng helper function to mimic the new IEEE compliant AVX512 instruction vcvtsd2usi. In the process, we needed to update the library test case because the default Floating Point Error (FPE) value for the new instruction is different from the default MSVC FPE value i.e. 0.
…not changing the library test case but the API to make sure NaN cases are handled.
@ghostghost added area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI community-contribution Indicates that the PR has been added by a community member labels May 12, 2023
@ghost

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

Issue Details

Draft PR for testing purposes. No need for review at this time.

Author:khushal1996
Assignees:-
Labels:

area-CodeGen-coreclr, community-contribution

Milestone:-

… a special handling for vcvttss2usi64 to make sure we read only dword instead of qword for float to ulong conversion
@ghostghost locked as resolved and limited conversation to collaborators Jun 18, 2023
Sign up for freeto subscribe to this conversation on GitHub. Already have an account? Sign in.

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Successfully merging this pull request may close these issues.

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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" + '
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Isolating JITDbl2Ulng helper changes - #86175

Closed
khushal1996 wants to merge 13 commits into
dotnet:mainfrom
khushal1996:kcm-avx512-scalar-convert-draft-pr
Closed

Isolating JITDbl2Ulng helper changes#86175
khushal1996 wants to merge 13 commits into
dotnet:mainfrom
khushal1996:kcm-avx512-scalar-convert-draft-pr

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@khushal1996

@khushal1996khushal1996 commented May 12, 2023

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Draft PR for testing purposes. No need for review at this time.

Isolating the helper function changes to make sure that the helper function is working fine. This is w.r.t. the draft PR #84384

This PR optimize the following cases:


CasePrevious CodeOptimized Instruction
float -> ulongCORINFO_HELP_DBL2ULNG Helpervcvttss2usi
publicstaticUInt64FloatToULong(floatval){return(UInt64)val;}

Assembly before optimization

G_M22196_IG01: ;; offset=0000H 4883EC28 subrsp,40 C5F877 vzeroupper ;; size=7 bbWeight=1 PerfScore 1.25G_M22196_IG02: ;; offset=0007H 62F17E085AC0 vcvtss2sd xmm0,xmm0 E87E57815E call CORINFO_HELP_DBL2ULNG90nop ;; size=12 bbWeight=1 PerfScore 5.25G_M22196_IG03: ;; offset=0013H 4883C428 addrsp,40 C3 ret ;; size=5 bbWeight=1 PerfScore 1.25

Assembly afteroptimization

G_M22196_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M22196_IG02: ;; offset=0003H 62F1FE0878C0 vcvttss2usirax,xmm0 ;; size=6 bbWeight=1 PerfScore 6.00G_M22196_IG03: ;; offset=0009H C3 ret

CasePrevious CodeOptimized Instruction
double -> ulongCORINFO_HELP_DBL2ULNG Helpervcvttsd2usi
publicstaticUInt64DoubleToULong(doubleval){return(UInt64)val;}

Assembly before optimization

G_M30068_IG01: ;; offset=0000H 4883EC28 subrsp,40 C5F877 vzeroupper ;; size=7 bbWeight=1 PerfScore 1.25G_M30068_IG02: ;; offset=0007H E874577F5E call CORINFO_HELP_DBL2ULNG90nop ;; size=6 bbWeight=1 PerfScore 1.25G_M30068_IG03: ;; offset=000DH 4883C428 addrsp,40 C3 ret

Assembly afteroptimization

G_M30068_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M30068_IG02: ;; offset=0003H 62F1FF0878C0 vcvttsd2usirax,xmm0 ;; size=6 bbWeight=1 PerfScore 5.00G_M30068_IG03: ;; offset=0009H C3 ret

CasePrevious CodeOptimized Instruction
ulong -> doublevcvtsi2sdvcvtusi2sd
publicstaticdoubleUIntToDouble(UInt64val){return(double)val;}

Assembly before optimization

G_M33997_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M33997_IG02: ;; offset=0003H 62F17C0857C0 vxorps xmm0,xmm0 62F1FF082AC1 vcvtsi2sd xmm0,rcx 4885C9 testrcx,rcx 7D0A jge SHORT G_M33997_IG03 62F1FF08580502000000 vaddsd xmm0, qword ptr [reloc @RWD00] ;; size=27 bbWeight=1 PerfScore 12.58G_M33997_IG03: ;; offset=001EH C3 ret

Assembly afteroptimization

G_M33997_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M33997_IG02: ;; offset=0003H 62F1FF087BC1 vcvtusi2sdxmm0,rcx ;; size=6 bbWeight=1 PerfScore 4.00G_M33997_IG03: ;; offset=0009H C3 ret

…vtsd2usi uses ulong.max_value to show FPE for negative, NAN and ulong_max + 1 values.
…architecture. This is because we have changed the JITDbl2Ulng helper function to mimic the new IEEE compliant AVX512 instruction vcvtsd2usi. In the process, we needed to update the library test case because the default Floating Point Error (FPE) value for the new instruction is different from the default MSVC FPE value i.e. 0.
…not changing the library test case but the API to make sure NaN cases are handled.
@ghostghost added area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI community-contribution Indicates that the PR has been added by a community member labels May 12, 2023
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Issue Details

Draft PR for testing purposes. No need for review at this time.

Author:khushal1996
Assignees:-
Labels:

area-CodeGen-coreclr, community-contribution

Milestone:-

… a special handling for vcvttss2usi64 to make sure we read only dword instead of qword for float to ulong conversion
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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('^' + ".*" + '
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Isolating JITDbl2Ulng helper changes - #86175

Closed
khushal1996 wants to merge 13 commits into
dotnet:mainfrom
khushal1996:kcm-avx512-scalar-convert-draft-pr
Closed

Isolating JITDbl2Ulng helper changes#86175
khushal1996 wants to merge 13 commits into
dotnet:mainfrom
khushal1996:kcm-avx512-scalar-convert-draft-pr

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@khushal1996

@khushal1996khushal1996 commented May 12, 2023

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Draft PR for testing purposes. No need for review at this time.

Isolating the helper function changes to make sure that the helper function is working fine. This is w.r.t. the draft PR #84384

This PR optimize the following cases:


CasePrevious CodeOptimized Instruction
float -> ulongCORINFO_HELP_DBL2ULNG Helpervcvttss2usi
publicstaticUInt64FloatToULong(floatval){return(UInt64)val;}

Assembly before optimization

G_M22196_IG01: ;; offset=0000H 4883EC28 subrsp,40 C5F877 vzeroupper ;; size=7 bbWeight=1 PerfScore 1.25G_M22196_IG02: ;; offset=0007H 62F17E085AC0 vcvtss2sd xmm0,xmm0 E87E57815E call CORINFO_HELP_DBL2ULNG90nop ;; size=12 bbWeight=1 PerfScore 5.25G_M22196_IG03: ;; offset=0013H 4883C428 addrsp,40 C3 ret ;; size=5 bbWeight=1 PerfScore 1.25

Assembly afteroptimization

G_M22196_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M22196_IG02: ;; offset=0003H 62F1FE0878C0 vcvttss2usirax,xmm0 ;; size=6 bbWeight=1 PerfScore 6.00G_M22196_IG03: ;; offset=0009H C3 ret

CasePrevious CodeOptimized Instruction
double -> ulongCORINFO_HELP_DBL2ULNG Helpervcvttsd2usi
publicstaticUInt64DoubleToULong(doubleval){return(UInt64)val;}

Assembly before optimization

G_M30068_IG01: ;; offset=0000H 4883EC28 subrsp,40 C5F877 vzeroupper ;; size=7 bbWeight=1 PerfScore 1.25G_M30068_IG02: ;; offset=0007H E874577F5E call CORINFO_HELP_DBL2ULNG90nop ;; size=6 bbWeight=1 PerfScore 1.25G_M30068_IG03: ;; offset=000DH 4883C428 addrsp,40 C3 ret

Assembly afteroptimization

G_M30068_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M30068_IG02: ;; offset=0003H 62F1FF0878C0 vcvttsd2usirax,xmm0 ;; size=6 bbWeight=1 PerfScore 5.00G_M30068_IG03: ;; offset=0009H C3 ret

CasePrevious CodeOptimized Instruction
ulong -> doublevcvtsi2sdvcvtusi2sd
publicstaticdoubleUIntToDouble(UInt64val){return(double)val;}

Assembly before optimization

G_M33997_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M33997_IG02: ;; offset=0003H 62F17C0857C0 vxorps xmm0,xmm0 62F1FF082AC1 vcvtsi2sd xmm0,rcx 4885C9 testrcx,rcx 7D0A jge SHORT G_M33997_IG03 62F1FF08580502000000 vaddsd xmm0, qword ptr [reloc @RWD00] ;; size=27 bbWeight=1 PerfScore 12.58G_M33997_IG03: ;; offset=001EH C3 ret

Assembly afteroptimization

G_M33997_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M33997_IG02: ;; offset=0003H 62F1FF087BC1 vcvtusi2sdxmm0,rcx ;; size=6 bbWeight=1 PerfScore 4.00G_M33997_IG03: ;; offset=0009H C3 ret

…vtsd2usi uses ulong.max_value to show FPE for negative, NAN and ulong_max + 1 values.
…architecture. This is because we have changed the JITDbl2Ulng helper function to mimic the new IEEE compliant AVX512 instruction vcvtsd2usi. In the process, we needed to update the library test case because the default Floating Point Error (FPE) value for the new instruction is different from the default MSVC FPE value i.e. 0.
…not changing the library test case but the API to make sure NaN cases are handled.
@ghostghost added area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI community-contribution Indicates that the PR has been added by a community member labels May 12, 2023
@ghost

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

Issue Details

Draft PR for testing purposes. No need for review at this time.

Author:khushal1996
Assignees:-
Labels:

area-CodeGen-coreclr, community-contribution

Milestone:-

… a special handling for vcvttss2usi64 to make sure we read only dword instead of qword for float to ulong conversion
@ghostghost locked as resolved and limited conversation to collaborators Jun 18, 2023
Sign up for freeto subscribe to this conversation on GitHub. Already have an account? Sign in.

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Successfully merging this pull request may close these issues.

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@khushal1996
, '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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Isolating JITDbl2Ulng helper changes - #86175

Closed
khushal1996 wants to merge 13 commits into
dotnet:mainfrom
khushal1996:kcm-avx512-scalar-convert-draft-pr
Closed

Isolating JITDbl2Ulng helper changes#86175
khushal1996 wants to merge 13 commits into
dotnet:mainfrom
khushal1996:kcm-avx512-scalar-convert-draft-pr

Conversation

@khushal1996

@khushal1996khushal1996 commented May 12, 2023

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Draft PR for testing purposes. No need for review at this time.

Isolating the helper function changes to make sure that the helper function is working fine. This is w.r.t. the draft PR #84384

This PR optimize the following cases:


CasePrevious CodeOptimized Instruction
float -> ulongCORINFO_HELP_DBL2ULNG Helpervcvttss2usi
publicstaticUInt64FloatToULong(floatval){return(UInt64)val;}

Assembly before optimization

G_M22196_IG01: ;; offset=0000H 4883EC28 subrsp,40 C5F877 vzeroupper ;; size=7 bbWeight=1 PerfScore 1.25G_M22196_IG02: ;; offset=0007H 62F17E085AC0 vcvtss2sd xmm0,xmm0 E87E57815E call CORINFO_HELP_DBL2ULNG90nop ;; size=12 bbWeight=1 PerfScore 5.25G_M22196_IG03: ;; offset=0013H 4883C428 addrsp,40 C3 ret ;; size=5 bbWeight=1 PerfScore 1.25

Assembly afteroptimization

G_M22196_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M22196_IG02: ;; offset=0003H 62F1FE0878C0 vcvttss2usirax,xmm0 ;; size=6 bbWeight=1 PerfScore 6.00G_M22196_IG03: ;; offset=0009H C3 ret

CasePrevious CodeOptimized Instruction
double -> ulongCORINFO_HELP_DBL2ULNG Helpervcvttsd2usi
publicstaticUInt64DoubleToULong(doubleval){return(UInt64)val;}

Assembly before optimization

G_M30068_IG01: ;; offset=0000H 4883EC28 subrsp,40 C5F877 vzeroupper ;; size=7 bbWeight=1 PerfScore 1.25G_M30068_IG02: ;; offset=0007H E874577F5E call CORINFO_HELP_DBL2ULNG90nop ;; size=6 bbWeight=1 PerfScore 1.25G_M30068_IG03: ;; offset=000DH 4883C428 addrsp,40 C3 ret

Assembly afteroptimization

G_M30068_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M30068_IG02: ;; offset=0003H 62F1FF0878C0 vcvttsd2usirax,xmm0 ;; size=6 bbWeight=1 PerfScore 5.00G_M30068_IG03: ;; offset=0009H C3 ret

CasePrevious CodeOptimized Instruction
ulong -> doublevcvtsi2sdvcvtusi2sd
publicstaticdoubleUIntToDouble(UInt64val){return(double)val;}

Assembly before optimization

G_M33997_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M33997_IG02: ;; offset=0003H 62F17C0857C0 vxorps xmm0,xmm0 62F1FF082AC1 vcvtsi2sd xmm0,rcx 4885C9 testrcx,rcx 7D0A jge SHORT G_M33997_IG03 62F1FF08580502000000 vaddsd xmm0, qword ptr [reloc @RWD00] ;; size=27 bbWeight=1 PerfScore 12.58G_M33997_IG03: ;; offset=001EH C3 ret

Assembly afteroptimization

G_M33997_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M33997_IG02: ;; offset=0003H 62F1FF087BC1 vcvtusi2sdxmm0,rcx ;; size=6 bbWeight=1 PerfScore 4.00G_M33997_IG03: ;; offset=0009H C3 ret

…vtsd2usi uses ulong.max_value to show FPE for negative, NAN and ulong_max + 1 values.
…architecture. This is because we have changed the JITDbl2Ulng helper function to mimic the new IEEE compliant AVX512 instruction vcvtsd2usi. In the process, we needed to update the library test case because the default Floating Point Error (FPE) value for the new instruction is different from the default MSVC FPE value i.e. 0.
…not changing the library test case but the API to make sure NaN cases are handled.
@ghostghost added area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI community-contribution Indicates that the PR has been added by a community member labels May 12, 2023
@ghost

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

Issue Details

Draft PR for testing purposes. No need for review at this time.

Author:khushal1996
Assignees:-
Labels:

area-CodeGen-coreclr, community-contribution

Milestone:-

… a special handling for vcvttss2usi64 to make sure we read only dword instead of qword for float to ulong conversion
@ghostghost locked as resolved and limited conversation to collaborators Jun 18, 2023
Sign up for freeto subscribe to this conversation on GitHub. Already have an account? Sign in.

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area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMIcommunity-contributionIndicates that the PR has been added by a community member

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Development

Successfully merging this pull request may close these issues.

1 participant

@khushal1996
, '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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Isolating JITDbl2Ulng helper changes - #86175

Closed
khushal1996 wants to merge 13 commits into
dotnet:mainfrom
khushal1996:kcm-avx512-scalar-convert-draft-pr
Closed

Isolating JITDbl2Ulng helper changes#86175
khushal1996 wants to merge 13 commits into
dotnet:mainfrom
khushal1996:kcm-avx512-scalar-convert-draft-pr

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@khushal1996khushal1996 commented May 12, 2023

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Draft PR for testing purposes. No need for review at this time.

Isolating the helper function changes to make sure that the helper function is working fine. This is w.r.t. the draft PR #84384

This PR optimize the following cases:


CasePrevious CodeOptimized Instruction
float -> ulongCORINFO_HELP_DBL2ULNG Helpervcvttss2usi
publicstaticUInt64FloatToULong(floatval){return(UInt64)val;}

Assembly before optimization

G_M22196_IG01: ;; offset=0000H 4883EC28 subrsp,40 C5F877 vzeroupper ;; size=7 bbWeight=1 PerfScore 1.25G_M22196_IG02: ;; offset=0007H 62F17E085AC0 vcvtss2sd xmm0,xmm0 E87E57815E call CORINFO_HELP_DBL2ULNG90nop ;; size=12 bbWeight=1 PerfScore 5.25G_M22196_IG03: ;; offset=0013H 4883C428 addrsp,40 C3 ret ;; size=5 bbWeight=1 PerfScore 1.25

Assembly afteroptimization

G_M22196_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M22196_IG02: ;; offset=0003H 62F1FE0878C0 vcvttss2usirax,xmm0 ;; size=6 bbWeight=1 PerfScore 6.00G_M22196_IG03: ;; offset=0009H C3 ret

CasePrevious CodeOptimized Instruction
double -> ulongCORINFO_HELP_DBL2ULNG Helpervcvttsd2usi
publicstaticUInt64DoubleToULong(doubleval){return(UInt64)val;}

Assembly before optimization

G_M30068_IG01: ;; offset=0000H 4883EC28 subrsp,40 C5F877 vzeroupper ;; size=7 bbWeight=1 PerfScore 1.25G_M30068_IG02: ;; offset=0007H E874577F5E call CORINFO_HELP_DBL2ULNG90nop ;; size=6 bbWeight=1 PerfScore 1.25G_M30068_IG03: ;; offset=000DH 4883C428 addrsp,40 C3 ret

Assembly afteroptimization

G_M30068_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M30068_IG02: ;; offset=0003H 62F1FF0878C0 vcvttsd2usirax,xmm0 ;; size=6 bbWeight=1 PerfScore 5.00G_M30068_IG03: ;; offset=0009H C3 ret

CasePrevious CodeOptimized Instruction
ulong -> doublevcvtsi2sdvcvtusi2sd
publicstaticdoubleUIntToDouble(UInt64val){return(double)val;}

Assembly before optimization

G_M33997_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M33997_IG02: ;; offset=0003H 62F17C0857C0 vxorps xmm0,xmm0 62F1FF082AC1 vcvtsi2sd xmm0,rcx 4885C9 testrcx,rcx 7D0A jge SHORT G_M33997_IG03 62F1FF08580502000000 vaddsd xmm0, qword ptr [reloc @RWD00] ;; size=27 bbWeight=1 PerfScore 12.58G_M33997_IG03: ;; offset=001EH C3 ret

Assembly afteroptimization

G_M33997_IG01: ;; offset=0000H C5F877 vzeroupper ;; size=3 bbWeight=1 PerfScore 1.00G_M33997_IG02: ;; offset=0003H 62F1FF087BC1 vcvtusi2sdxmm0,rcx ;; size=6 bbWeight=1 PerfScore 4.00G_M33997_IG03: ;; offset=0009H C3 ret

…vtsd2usi uses ulong.max_value to show FPE for negative, NAN and ulong_max + 1 values.
…architecture. This is because we have changed the JITDbl2Ulng helper function to mimic the new IEEE compliant AVX512 instruction vcvtsd2usi. In the process, we needed to update the library test case because the default Floating Point Error (FPE) value for the new instruction is different from the default MSVC FPE value i.e. 0.
…not changing the library test case but the API to make sure NaN cases are handled.
@ghostghost added area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI community-contribution Indicates that the PR has been added by a community member labels May 12, 2023
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Draft PR for testing purposes. No need for review at this time.

Author:khushal1996
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area-CodeGen-coreclr, community-contribution

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… a special handling for vcvttss2usi64 to make sure we read only dword instead of qword for float to ulong conversion
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