[Bug 86432] llvm Unreal Elemental rendering regression

[Bug 86432] llvm Unreal Elemental rendering regression

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=86432

--- Comment #1 from Andy Furniss <adf.lists@gmail.com> ---
radeonsi R9270X I am getting mainly black screen with just a few frames/blocks
correct since llvm commit -

6f485c0bc532ae7954ca5e0f3fe50a5558b64883 is the first bad commit
commit 6f485c0bc532ae7954ca5e0f3fe50a5558b64883
Author: Matt Arsenault <Matthew.Arsenault@amd.com>
Date:   Thu Nov 13 23:03:09 2014 +0000

    R600/SI: Fix fmin_legacy / fmax_legacy matching for SI

    select_cc is expanded on SI, so this was never matched.

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[Bug 86432] llvm Unreal Elemental rendering regression

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https://bugs.freedesktop.org/show_bug.cgi?id=86432

--- Comment #2 from Marek Olšák <maraeo@gmail.com> ---
Created attachment 109675
  --> https://bugs.freedesktop.org/attachment.cgi?id=109675&action=edit
workaround

Can you test this LLVM patch. It's not a final fix.

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[Bug 86432] llvm Unreal Elemental rendering regression

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https://bugs.freedesktop.org/show_bug.cgi?id=86432

--- Comment #3 from Andy Furniss <adf.lists@gmail.com> ---
(In reply to Marek Olšák from comment #2)
> Created attachment 109675 [details] [review]
> workaround
> 
> Can you test this LLVM patch. It's not a final fix.

It doesn't apply to head, so testing reset on the bad commit - Yes it does
workaround the issue.

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[Bug 86432] llvm Unreal Elemental rendering regression

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https://bugs.freedesktop.org/show_bug.cgi?id=86432

Matt Arsenault <arsenm2@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |arsenm2@gmail.com

--- Comment #4 from Matt Arsenault <arsenm2@gmail.com> ---
Created attachment 109693
  --> https://bugs.freedesktop.org/attachment.cgi?id=109693&action=edit
Tentative fix

I think this is because I was assuming this would only ever see ordered
comparisons. This tries disabling the combine for unordered compares

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[Bug 86432] llvm Unreal Elemental rendering regression

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[-- Attachment #1.1: Type: text/plain, Size: 486 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=86432

--- Comment #5 from Marek Olšák <maraeo@gmail.com> ---
(In reply to Matt Arsenault from comment #4)
> Created attachment 109693 [details] [review]
> Tentative fix
> 
> I think this is because I was assuming this would only ever see ordered
> comparisons. This tries disabling the combine for unordered compares

Your patch fixes this issue.

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[Bug 86432] llvm Unreal Elemental rendering regression

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https://bugs.freedesktop.org/show_bug.cgi?id=86432

--- Comment #6 from Andy Furniss <adf.lists@gmail.com> ---
Created attachment 109694
  --> https://bugs.freedesktop.org/attachment.cgi?id=109694&action=edit
clang build fail with Tentative fix

I get a build fail with this - I build OK same tree without patch.

clang is roughly from same tree, though I deleted tools/clang when doing the
bisect and haven't reinstated yet.

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[Bug 86432] llvm Unreal Elemental rendering regression

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https://bugs.freedesktop.org/show_bug.cgi?id=86432

--- Comment #7 from Andy Furniss <adf.lists@gmail.com> ---
(In reply to Andy Furniss from comment #6)
> Created attachment 109694 [details]
> clang build fail with Tentative fix
> 
> I get a build fail with this - I build OK same tree without patch.
> 
> clang is roughly from same tree, though I deleted tools/clang when doing the
> bisect and haven't reinstated yet.

Never mind - I've upgraded GCC - for whatever reason it didn't care or error
initially even though I cleaned + git clean -dfx + git reset hard
origin/master.

Now I do it and it bails early in the configure -

We detected a missing feature in the standard C++ library that was known to be
missing in libstdc++4.6 and implemented in libstdc++4.7. There are numerous
C++11 problems with 4.6's library, and we don't support GCCs or libstdc++ older
than 4.7. You will need to update your system and ensure Clang uses the newer
standard library.

Which is confusing as I've just upgraded from gcc 4.8.3 to 4.9.2.

Maybe I need to try rebuilding llvm/clang with gcc.

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[Bug 86432] llvm Unreal Elemental rendering regression

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 9150 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=86432

Andy Furniss <adf.lists@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #109694|0                           |1
        is obsolete|                            |

--- Comment #8 from Andy Furniss <adf.lists@gmail.com> ---
Comment on attachment 109694
  --> https://bugs.freedesktop.org/attachment.cgi?id=109694
clang build fail with Tentative fix

>make[3]: Entering directory '/mnt/sdb1/Src64/llvm/lib/Target/R600'
>llvm[3]: Compiling AMDGPUISelLowering.cpp for Release+Asserts build
>clang: /mnt/sdb1/Src64/llvm/include/llvm/Support/Casting.h:237: typename cast_retty<X, Y *>::ret_type llvm::cast(Y *) [X = llvm::CallInst, Y = llvm::Instruction]: Assertion `isa<X>(Val) && "cast<Ty>() argument of incompatible type!"' failed.
>#0 0x7fa42bcc70b8 llvm::sys::PrintStackTrace(_IO_FILE*) (/usr/bin/../lib/libLLVM-3.6svn.so+0x4230b8)
>#1 0x7fa42bcc883b SignalHandler(int) (/usr/bin/../lib/libLLVM-3.6svn.so+0x42483b)
>#2 0x7fa42b4812a0 __restore_rt (/lib/libpthread.so.0+0xf2a0)
>#3 0x7fa42a27e985 __GI_raise /sources/eglibc-2.15/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:64:0
>#4 0x7fa42a281aab __GI_abort /sources/eglibc-2.15/stdlib/abort.c:93:0
>#5 0x7fa42a2779de __assert_fail_base /sources/eglibc-2.15/assert/assert.c:55:0
>#6 0x7fa42a277a82 (/lib/libc.so.6+0x2da82)
>#7 0x8a43b7 clang::CodeGen::CodeGenFunction::EmitCall(clang::CodeGen::CGFunctionInfo const&, llvm::Value*, clang::CodeGen::ReturnValueSlot, clang::CodeGen::CallArgList const&, clang::Decl const*, llvm::Instruction**) (/usr/bin/clang+0x8a43b7)
>#8 0x8eab51 clang::CodeGen::CodeGenFunction::EmitCXXMemberOrOperatorCall(clang::CXXMethodDecl const*, llvm::Value*, clang::CodeGen::ReturnValueSlot, llvm::Value*, llvm::Value*, clang::QualType, clang::CallExpr const*) (/usr/bin/clang+0x8eab51)
>#9 0x8ebb5e clang::CodeGen::CodeGenFunction::EmitCXXMemberCallExpr(clang::CXXMemberCallExpr const*, clang::CodeGen::ReturnValueSlot) (/usr/bin/clang+0x8ebb5e)
>#10 0x8e053b clang::CodeGen::CodeGenFunction::EmitCallExpr(clang::CallExpr const*, clang::CodeGen::ReturnValueSlot) (/usr/bin/clang+0x8e053b)
>#11 0x909ade (/usr/bin/clang+0x909ade)
>#12 0x8f9943 clang::CodeGen::CodeGenFunction::EmitScalarExpr(clang::Expr const*, bool) (/usr/bin/clang+0x8f9943)
>#13 0x8b9e19 clang::CodeGen::CodeGenFunction::EmitScalarInit(clang::Expr const*, clang::ValueDecl const*, clang::CodeGen::LValue, bool) (/usr/bin/clang+0x8b9e19)
>#14 0x8bca2e clang::CodeGen::CodeGenFunction::EmitExprAsInit(clang::Expr const*, clang::ValueDecl const*, clang::CodeGen::LValue, bool) (/usr/bin/clang+0x8bca2e)
>#15 0x8bb9ed clang::CodeGen::CodeGenFunction::EmitAutoVarInit(clang::CodeGen::CodeGenFunction::AutoVarEmission const&) (/usr/bin/clang+0x8bb9ed)
>#16 0x8b880a clang::CodeGen::CodeGenFunction::EmitVarDecl(clang::VarDecl const&) (/usr/bin/clang+0x8b880a)
>#17 0x7daa7c clang::CodeGen::CodeGenFunction::EmitDeclStmt(clang::DeclStmt const&) (/usr/bin/clang+0x7daa7c)
>#18 0x7d32b4 clang::CodeGen::CodeGenFunction::EmitSimpleStmt(clang::Stmt const*) (/usr/bin/clang+0x7d32b4)
>#19 0x7d230f clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*) (/usr/bin/clang+0x7d230f)
>#20 0x7db4ab clang::CodeGen::CodeGenFunction::EmitCompoundStmtWithoutScope(clang::CompoundStmt const&, bool, clang::CodeGen::AggValueSlot) (/usr/bin/clang+0x7db4ab)
>#21 0x7efa47 clang::CodeGen::CodeGenFunction::EmitFunctionBody(clang::CodeGen::FunctionArgList&, clang::Stmt const*) (/usr/bin/clang+0x7efa47)
>#22 0x7f002a clang::CodeGen::CodeGenFunction::GenerateCode(clang::GlobalDecl, llvm::Function*, clang::CodeGen::CGFunctionInfo const&) (/usr/bin/clang+0x7f002a)
>#23 0x7ff21f clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/usr/bin/clang+0x7ff21f)
>#24 0x7fc049 clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/usr/bin/clang+0x7fc049)
>#25 0x800c31 clang::CodeGen::CodeGenModule::EmitTopLevelDecl(clang::Decl*) (/usr/bin/clang+0x800c31)
>#26 0x79fe9f (/usr/bin/clang+0x79fe9f)
>#27 0x796d47 (/usr/bin/clang+0x796d47)
>#28 0x99ebc3 clang::ParseAST(clang::Sema&, bool, bool) (/usr/bin/clang+0x99ebc3)
>#29 0x5a86ae clang::FrontendAction::Execute() (/usr/bin/clang+0x5a86ae)
>#30 0x57b87c clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/usr/bin/clang+0x57b87c)
>#31 0x55dc62 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/usr/bin/clang+0x55dc62)
>#32 0x5548ed cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/usr/bin/clang+0x5548ed)
>#33 0x55c2e2 main (/usr/bin/clang+0x55c2e2)
>#34 0x7fa42a26b36d __libc_start_main /sources/eglibc-2.15/csu/libc-start.c:258:0
>#35 0x5545d5 _start (/usr/bin/clang+0x5545d5)
>Stack dump:
>0.      Program arguments: /usr/bin/clang -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -disable-free -main-file-name AMDGPUISelLowering.cpp -mrelocation-model pic -pic-level 2 -mthread-model posix -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -target-linker-version 2.23 -momit-leaf-frame-pointer -dwarf-column-info -ffunction-sections -fdata-sections -coverage-file /mnt/sdb1/Src64/llvm/lib/Target/R600/Release+Asserts/AMDGPUISelLowering.o -resource-dir /usr/bin/../lib/clang/3.6.0 -dependency-file /mnt/sdb1/Src64/llvm/lib/Target/R600/Release+Asserts/AMDGPUISelLowering.d.tmp -MP -MT /mnt/sdb1/Src64/llvm/lib/Target/R600/Release+Asserts/AMDGPUISelLowering.o -MT /mnt/sdb1/Src64/llvm/lib/Target/R600/Release+Asserts/AMDGPUISelLowering.d -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /mnt/sdb1/Src64/llvm/include -I /mnt/sdb1/Src64/llvm/lib/Target/R600 -internal-isystem /usr/bin/../lib64/gcc/x86_64-unknown-linux-gnu/4.9.2/../../../../include/c++/4.9.2 -internal-isystem /usr/bin/../lib64/gcc/x86_64-unknown-linux-gnu/4.9.2/../../../../include/c++/4.9.2/x86_64-unknown-linux-gnu -internal-isystem /usr/bin/../lib64/gcc/x86_64-unknown-linux-gnu/4.9.2/../../../../include/c++/4.9.2/backward -internal-isystem /usr/local/include -internal-isystem /usr/bin/../lib/clang/3.6.0/include -internal-externc-isystem /include -internal-externc-isystem /usr/include -O3 -Wcast-qual -Wno-long-long -Wall -W -Wno-unused-parameter -Wwrite-strings -Wcovered-switch-default -Wno-uninitialized -Wno-missing-field-initializers -Wno-comment -pedantic -std=c++11 -fdeprecated-macro -fdebug-compilation-dir /mnt/sdb1/Src64/llvm/lib/Target/R600 -ferror-limit 19 -fmessage-length 239 -fvisibility-inlines-hidden -mstackrealign -fno-rtti -fobjc-runtime=gcc -fdiagnostics-show-option -fcolor-diagnostics -vectorize-loops -vectorize-slp -o /mnt/sdb1/Src64/llvm/lib/Target/R600/Release+Asserts/AMDGPUISelLowering.o -x c++ AMDGPUISelLowering.cpp 
>1.      AMDGPUISelLowering.cpp:97:1: current parser token 'EVT'
>2.      AMDGPUISelLowering.cpp:87:27: LLVM IR generation of declaration 'llvm::AMDGPUTargetLowering::getEquivalentMemType'
>3.      AMDGPUISelLowering.cpp:87:27: Generating code for declaration 'llvm::AMDGPUTargetLowering::getEquivalentMemType'
>clang: error: unable to execute command: Aborted
>clang: error: clang frontend command failed due to signal (use -v to see invocation)
>clang version 3.6.0 (http://llvm.org/git/clang.git f98071d4eacb44e7f36b4fd9878f415524a6efda) (http://llvm.org/git/llvm.git ab9c404bbdceead0ced57d5e805eeeb28941de35)
>Target: x86_64-unknown-linux-gnu
>Thread model: posix
>clang: note: diagnostic msg: PLEASE submit a bug report to http://llvm.org/bugs/ and include the crash backtrace, preprocessed source, and associated run script.
>clang: note: diagnostic msg: 
>********************
>
>PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
>Preprocessed source(s) and associated run script(s) are located at:
>clang: note: diagnostic msg: /tmp/AMDGPUISelLowering-03f4c1.cpp
>clang: note: diagnostic msg: /tmp/AMDGPUISelLowering-03f4c1.sh
>clang: note: diagnostic msg: 
>
>********************
>/bin/rm: cannot remove â/mnt/sdb1/Src64/llvm/lib/Target/R600/Release+Asserts/AMDGPUISelLowering.d.tmpâ: No such file or directory
>/mnt/sdb1/Src64/llvm/Makefile.rules:1514: recipe for target '/mnt/sdb1/Src64/llvm/lib/Target/R600/Release+Asserts/AMDGPUISelLowering.o' failed
>make[3]: *** [/mnt/sdb1/Src64/llvm/lib/Target/R600/Release+Asserts/AMDGPUISelLowering.o] Error 1
>make[3]: Leaving directory '/mnt/sdb1/Src64/llvm/lib/Target/R600'
>/mnt/sdb1/Src64/llvm/Makefile.rules:932: recipe for target 'R600/.makeall' failed
>make[2]: *** [R600/.makeall] Error 2
>make[2]: Leaving directory '/mnt/sdb1/Src64/llvm/lib/Target'
>/mnt/sdb1/Src64/llvm/Makefile.rules:932: recipe for target 'Target/.makeall' failed
>make[1]: *** [Target/.makeall] Error 2
>make[1]: Leaving directory '/mnt/sdb1/Src64/llvm/lib'
>/mnt/sdb1/Src64/llvm/Makefile.rules:883: recipe for target 'all' failed
>make: *** [all] Error 1
>

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[Bug 86432] llvm Unreal Elemental rendering regression

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https://bugs.freedesktop.org/show_bug.cgi?id=86432

--- Comment #9 from Andy Furniss <adf.lists@gmail.com> ---
oops, failed there trying to obsolete - didn't mean to do comment 8

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[Bug 86432] llvm Unreal Elemental rendering regression

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https://bugs.freedesktop.org/show_bug.cgi?id=86432

--- Comment #10 from Andy Furniss <adf.lists@gmail.com> ---
Built llvm with GCC now and Tentative fix works for me.

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[Bug 86432] llvm Unreal Elemental rendering regression

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https://bugs.freedesktop.org/show_bug.cgi?id=86432

--- Comment #11 from Matt Arsenault <arsenm2@gmail.com> ---
I've posted an improved patch here:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20141117/245415.html

This should swap the operands and still work with unordered compares

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[Bug 86432] llvm Unreal Elemental rendering regression

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https://bugs.freedesktop.org/show_bug.cgi?id=86432

--- Comment #12 from Andy Furniss <adf.lists@gmail.com> ---
(In reply to Matt Arsenault from comment #11)
> I've posted an improved patch here:
> http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20141117/245415.
> html
> 
> This should swap the operands and still work with unordered compares

Doesn't work for me with the 2 patches from there on llvm tree from yesterday.

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[Bug 86432] llvm Unreal Elemental rendering regression

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https://bugs.freedesktop.org/show_bug.cgi?id=86432

--- Comment #13 from Marek Olšák <maraeo@gmail.com> ---
Mesa commit 645b471d619b654d3bacfa8598f759833e08db4e should fix this.

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[Bug 86432] llvm Unreal Elemental rendering regression

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https://bugs.freedesktop.org/show_bug.cgi?id=86432

--- Comment #14 from Andy Furniss <adf.lists@gmail.com> ---
(In reply to Marek Olšák from comment #13)
> Mesa commit 645b471d619b654d3bacfa8598f759833e08db4e should fix this.

Yes, it works with or without patches on current mesa head.

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[Bug 86432] llvm Unreal Elemental rendering regression

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https://bugs.freedesktop.org/show_bug.cgi?id=86432

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #15 from Michel Dänzer <michel@daenzer.net> ---
Module: Mesa
Branch: master
Commit: 645b471d619b654d3bacfa8598f759833e08db4e
URL:   
http://cgit.freedesktop.org/mesa/mesa/commit/?id=645b471d619b654d3bacfa8598f759833e08db4e

Author: Marek Olšák <marek.olsak@amd.com>
Date:   Thu Nov 20 22:16:09 2014 +0100

radeonsi: use minnum and maxnum LLVM intrinsics for MIN and MAX opcodes

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[Bug 86432] llvm Unreal Elemental rendering regression

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=86432

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
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                 CC|                            |haagch@frickel.club

--- Comment #16 from Michel Dänzer <michel@daenzer.net> ---
*** Bug 86490 has been marked as a duplicate of this bug. ***

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