[llvm-commits] [llvm] r170546 - in /llvm/trunk: include/llvm/Target/TargetLowering.h test/Transforms/LoopVectorize/X86/no-vector.ll
Rafael Espíndola
rafael.espindola at gmail.com
Sun Dec 30 11:40:28 PST 2012
This is llvm.org/pr14740, right?
On 29 December 2012 16:17, Reed Kotler <rkotler at mips.com> wrote:
> This change caused a regression in the Mips compiler.
>
> rkotler at laptop-rkotler:~/test$ ~/llvm/install/bin/clang++ -target
> mipsel-linux-gnu -c -O3 test.cc -S -v
> clang version 3.3 (gitosis at dmz-portal.mips.com:clang.git
> 16f90bfe53ed637156c315cbbeddcf2d91266d67)
> (gitosis at dmz-portal.mips.com:llvm.git
> 35d346294128038794637b384fcc5f97ff3d9978)
> Target: mipsel--linux-gnu
> Thread model: posix
> "/home/rkotler/llvm/install/bin/clang" -cc1 -triple mipsel--linux-gnu -S
> -disable-free -main-file-name test.cc -mrelocation-model static
> -mdisable-fp-elim -fmath-errno -mconstructor-aliases -target-cpu mips32
> -target-abi o32 -mfloat-abi hard -target-linker-version 2.20.1
> -momit-leaf-frame-pointer -v -coverage-file /home/rkotler/test/test.s
> -resource-dir /home/rkotler/llvm/install/bin/../lib/clang/3.3
> -fmodule-cache-path /var/tmp/clang-module-cache -internal-isystem
> /usr/local/include -internal-isystem
> /home/rkotler/llvm/install/bin/../lib/clang/3.3/include
> -internal-externc-isystem /include -internal-externc-isystem /usr/include
> -O3 -fdeprecated-macro -fno-dwarf-directory-asm -fdebug-compilation-dir
> /home/rkotler/test -ferror-limit 19 -fmessage-length 80 -mstackrealign
> -fobjc-runtime=gcc -fcxx-exceptions -fexceptions -fdiagnostics-show-option
> -fcolor-diagnostics -backend-option -vectorize-loops -o test.s -x c++
> test.cc
> clang -cc1 version 3.3 based upon LLVM 3.3svn default target
> i386-pc-linux-gnu
> ignoring nonexistent directory "/include"
> #include "..." search starts here:
> #include <...> search starts here:
> /usr/local/include
> /home/rkotler/llvm/install/bin/../lib/clang/3.3/include
> /usr/include
> End of search list.
> ExpandIntegerOperand Op #2: 0xcaffe20: i32,i32 = sra_parts 0xcaf96b0,
> 0xcaf97c0, 0xcaf2208 [ID=0]
>
> Do not know how to expand this operator's operand!
> UNREACHABLE executed at
> /home/rkotler/workspace/llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp:2451!
> 0 clang 0x0a68f122
> 1 clang 0x0a68ed79
> 2 0x00915400 __kernel_sigreturn + 0
> 3 libc.so.6 0x00284ab2 abort + 386
> 4 clang 0x0a6778ff
> 5 clang 0x09f76d70
> 6 clang 0x09f1a106
> 7 clang 0x09f1e7ae llvm::SelectionDAG::LegalizeTypes() + 68
> 8 clang 0x09ec9903 llvm::SelectionDAGISel::CodeGenAndEmitDAG() + 1061
> 9 clang 0x09ec91e1
> llvm::SelectionDAGISel::SelectBasicBlock(llvm::ilist_iterator<llvm::Instruction
> const>, llvm::ilist_iterator<llvm::Instruction const>, bool&) + 219
> 10 clang 0x09ecbdb9
> llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) + 2559
> 11 clang 0x09ec86e9
> llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) + 723
> 12 clang 0x09aaf454
> 13 clang 0x0a04ac09
> llvm::MachineFunctionPass::runOnFunction(llvm::Function&) + 87
> 14 clang 0x0a61a78e llvm::FPPassManager::runOnFunction(llvm::Function&)
> + 306
> 15 clang 0x0a61a935 llvm::FPPassManager::runOnModule(llvm::Module&) + 97
> 16 clang 0x0a61ac46 llvm::MPPassManager::runOnModule(llvm::Module&) +
> 498
> 17 clang 0x0a61b1e0 llvm::PassManagerImpl::run(llvm::Module&) + 234
> 18 clang 0x0a61b4f9 llvm::PassManager::run(llvm::Module&) + 39
> 19 clang 0x089bc748
> 20 clang 0x089bc7da clang::EmitBackendOutput(clang::DiagnosticsEngine&,
> clang::CodeGenOptions const&, clang::TargetOptions const&,
> clang::LangOptions const&, llvm::Module*, clang::BackendAction,
> llvm::raw_ostream*) + 77
> 21 clang 0x089b88d2
> 22 clang 0x08b66f56 clang::ParseAST(clang::Sema&, bool, bool) + 690
> 23 clang 0x087af50e clang::ASTFrontendAction::ExecuteAction() + 284
> 24 clang 0x089b7a13 clang::CodeGenAction::ExecuteAction() + 1065
> 25 clang 0x087af144 clang::FrontendAction::Execute() + 180
> 26 clang 0x08787e8e
> clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 748
> 27 clang 0x0875b03a
> clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 918
> 28 clang 0x0874c62f cc1_main(char const**, char const**, char const*,
> void*) + 805
> 29 clang 0x08755f02 main + 521
> 30 libc.so.6 0x0026dbd6 __libc_start_main + 230
> 31 clang 0x0874bd61
> Stack dump:
> 0. Program arguments: /home/rkotler/llvm/install/bin/clang -cc1 -triple
> mipsel--linux-gnu -S -disable-free -main-file-name test.cc
> -mrelocation-model static -mdisable-fp-elim -fmath-errno
> -mconstructor-aliases -target-cpu mips32 -target-abi o32 -mfloat-abi hard
> -target-linker-version 2.20.1 -momit-leaf-frame-pointer -v -coverage-file
> /home/rkotler/test/test.s -resource-dir
> /home/rkotler/llvm/install/bin/../lib/clang/3.3 -fmodule-cache-path
> /var/tmp/clang-module-cache -internal-isystem /usr/local/include
> -internal-isystem /home/rkotler/llvm/install/bin/../lib/clang/3.3/include
> -internal-externc-isystem /include -internal-externc-isystem /usr/include
> -O3 -fdeprecated-macro -fno-dwarf-directory-asm -fdebug-compilation-dir
> /home/rkotler/test -ferror-limit 19 -fmessage-length 80 -mstackrealign
> -fobjc-runtime=gcc -fcxx-exceptions -fexceptions -fdiagnostics-show-option
> -fcolor-diagnostics -backend-option -vectorize-loops -o test.s -x c++
> test.cc
> 1. <eof> parser at end of file
> 2. Code generation
> 3. Running pass 'Function Pass Manager' on module 'test.cc'.
> 4. Running pass 'MIPS DAG->DAG Pattern Instruction Selection' on
> function '@_Z3fooi'
> clang: error: unable to execute command: Aborted
> clang: error: clang frontend command failed due to signal (use -v to see
> invocation)
> clang version 3.3 (gitosis at dmz-portal.mips.com:clang.git
> 16f90bfe53ed637156c315cbbeddcf2d91266d67)
> (gitosis at dmz-portal.mips.com:llvm.git
> 35d346294128038794637b384fcc5f97ff3d9978)
> Target: mipsel--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/test-Ak0ymz.cpp
> clang: note: diagnostic msg: /tmp/test-Ak0ymz.sh
> clang: note: diagnostic msg:
>
> ********************
>
>
> On 12/19/2012 06:34 AM, Benjamin Kramer wrote:
>>
>> Author: d0k
>> Date: Wed Dec 19 08:34:28 2012
>> New Revision: 170546
>>
>> URL: http://llvm.org/viewvc/llvm-project?rev=170546&view=rev
>> Log:
>> Make TargetLowering::getTypeConversion more resilient against odd illegal
>> MVTs.
>>
>> - An MVT can become an EVT when being split (e.g. v2i8 -> v1i8, the latter
>> doesn't exist)
>> - Return the scalar value when an MVT is scalarized (v1i64 -> i64)
>>
>> Fixes PR14639ff.
>>
>> Added:
>> llvm/trunk/test/Transforms/LoopVectorize/X86/no-vector.ll
>> Modified:
>> llvm/trunk/include/llvm/Target/TargetLowering.h
>>
>> Modified: llvm/trunk/include/llvm/Target/TargetLowering.h
>> URL:
>> http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Target/TargetLowering.h?rev=170546&r1=170545&r2=170546&view=diff
>>
>> ==============================================================================
>> --- llvm/trunk/include/llvm/Target/TargetLowering.h (original)
>> +++ llvm/trunk/include/llvm/Target/TargetLowering.h Wed Dec 19 08:34:28
>> 2012
>> @@ -2005,8 +2005,11 @@
>> && "Promote may not follow Expand or Promote");
>>
>> if (LA == TypeSplitVector)
>> - NVT = MVT::getVectorVT(SVT.getVectorElementType(),
>> - SVT.getVectorNumElements() / 2);
>> + return LegalizeKind(LA, EVT::getVectorVT(Context,
>> +
>> SVT.getVectorElementType(),
>> +
>> SVT.getVectorNumElements()/2));
>> + if (LA == TypeScalarizeVector)
>> + return LegalizeKind(LA, SVT.getVectorElementType());
>> return LegalizeKind(LA, NVT);
>> }
>>
>>
>> Added: llvm/trunk/test/Transforms/LoopVectorize/X86/no-vector.ll
>> URL:
>> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/LoopVectorize/X86/no-vector.ll?rev=170546&view=auto
>>
>> ==============================================================================
>> --- llvm/trunk/test/Transforms/LoopVectorize/X86/no-vector.ll (added)
>> +++ llvm/trunk/test/Transforms/LoopVectorize/X86/no-vector.ll Wed Dec 19
>> 08:34:28 2012
>> @@ -0,0 +1,22 @@
>> +; RUN: opt -S -mtriple=i386-unknown-freebsd -mcpu=i486 -loop-vectorize <
>> %s
>> +
>> +define i32 @PR14639(i8* nocapture %s, i32 %len) nounwind {
>> +entry:
>> + %cmp4 = icmp sgt i32 %len, 0
>> + br i1 %cmp4, label %for.body, label %for.end
>> +
>> +for.body: ; preds = %entry,
>> %for.body
>> + %i.06 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
>> + %r.05 = phi i32 [ %xor, %for.body ], [ 0, %entry ]
>> + %arrayidx = getelementptr inbounds i8* %s, i32 %i.06
>> + %0 = load i8* %arrayidx, align 1
>> + %conv = sext i8 %0 to i32
>> + %xor = xor i32 %conv, %r.05
>> + %inc = add nsw i32 %i.06, 1
>> + %exitcond = icmp eq i32 %inc, %len
>> + br i1 %exitcond, label %for.end, label %for.body
>> +
>> +for.end: ; preds = %for.body,
>> %entry
>> + %r.0.lcssa = phi i32 [ 0, %entry ], [ %xor, %for.body ]
>> + ret i32 %r.0.lcssa
>> +}
>>
>
>
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