powerpc64 failures, Was Not: [llvm] r279573 - MachineFunction: Introduce NoPHIs property

Matthias Braun via llvm-commits llvm-commits at lists.llvm.org
Wed Aug 24 10:23:38 PDT 2016


+CC Kostya

> On Aug 24, 2016, at 8:18 AM, Bill Seurer via llvm-commits <llvm-commits at lists.llvm.org> wrote:
> 
> I tried this by hand.  r279571 works fine and with r279572:
> 
> FAIL: UBSan-MSan-powerpc64le :: TestCases/TypeCheck/vptr.cpp (95 of 144)
> ******************** TEST 'UBSan-MSan-powerpc64le :: TestCases/TypeCheck/vptr.cpp' FAILED ********************
> Script:
> --
> /home/seurer/llvm/build/llvm-test/./bin/clang --driver-mode=g++ -fsanitize=memory -m64 -frtti -fsanitize=vptr -fno-sanitize-recover=vptr -g /home/seurer/llvm/llvm-test/projects/compiler-rt/test/ubsan/TestCases/TypeCheck/vptr.cpp -O3 -o /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp
> /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp rT && /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp mT && /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp fT && /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp cT
> /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp rU && /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp mU && /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp fU && /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp cU
> /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp rS && /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp rV && /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp oV
> env UBSAN_OPTIONS=print_stacktrace=1 not /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp mS 2>&1 | FileCheck /home/seurer/llvm/llvm-test/projects/compiler-rt/test/ubsan/TestCases/TypeCheck/vptr.cpp --check-prefix=CHECK-MEMBER --check-prefix=CHECK-Linux-MEMBER --strict-whitespace
> env UBSAN_OPTIONS=print_stacktrace=1 not /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp fS 2>&1 | FileCheck /home/seurer/llvm/llvm-test/projects/compiler-rt/test/ubsan/TestCases/TypeCheck/vptr.cpp --check-prefix=CHECK-MEMFUN --strict-whitespace
> env UBSAN_OPTIONS=print_stacktrace=1 not /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp cS 2>&1 | FileCheck /home/seurer/llvm/llvm-test/projects/compiler-rt/test/ubsan/TestCases/TypeCheck/vptr.cpp --check-prefix=CHECK-DOWNCAST --check-prefix=CHECK-Linux-DOWNCAST --strict-whitespace
> env UBSAN_OPTIONS=print_stacktrace=1 not /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp mV 2>&1 | FileCheck /home/seurer/llvm/llvm-test/projects/compiler-rt/test/ubsan/TestCases/TypeCheck/vptr.cpp --check-prefix=CHECK-MEMBER --check-prefix=CHECK-Linux-MEMBER --strict-whitespace
> env UBSAN_OPTIONS=print_stacktrace=1 not /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp fV 2>&1 | FileCheck /home/seurer/llvm/llvm-test/projects/compiler-rt/test/ubsan/TestCases/TypeCheck/vptr.cpp --check-prefix=CHECK-MEMFUN --strict-whitespace
> env UBSAN_OPTIONS=print_stacktrace=1 not /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp cV 2>&1 | FileCheck /home/seurer/llvm/llvm-test/projects/compiler-rt/test/ubsan/TestCases/TypeCheck/vptr.cpp --check-prefix=CHECK-DOWNCAST --check-prefix=CHECK-Linux-DOWNCAST --strict-whitespace
> env UBSAN_OPTIONS=print_stacktrace=1 not /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp oU 2>&1 | FileCheck /home/seurer/llvm/llvm-test/projects/compiler-rt/test/ubsan/TestCases/TypeCheck/vptr.cpp --check-prefix=CHECK-OFFSET --check-prefix=CHECK-Linux-OFFSET --strict-whitespace
> env UBSAN_OPTIONS=print_stacktrace=1 not /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp m0 2>&1 | FileCheck /home/seurer/llvm/llvm-test/projects/compiler-rt/test/ubsan/TestCases/TypeCheck/vptr.cpp --check-prefix=CHECK-NULL-MEMBER --check-prefix=CHECK-Linux-NULL-MEMBER --strict-whitespace
> (echo "vptr_check:S"; echo "vptr_check:T"; echo "vptr_check:U") > /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp.supp
> env UBSAN_OPTIONS=suppressions='"/home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp.supp"' /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp mS
> env UBSAN_OPTIONS=suppressions='"/home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp.supp"' /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp fS
> env UBSAN_OPTIONS=suppressions='"/home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp.supp"' /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp cS
> env UBSAN_OPTIONS=suppressions='"/home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp.supp"' /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp mV
> env UBSAN_OPTIONS=suppressions='"/home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp.supp"' /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp fV
> env UBSAN_OPTIONS=suppressions='"/home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp.supp"' /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp cV
> env UBSAN_OPTIONS=suppressions='"/home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp.supp"' /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp oU
> echo "vptr_check:S" > /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp.loc-supp
> env UBSAN_OPTIONS=suppressions='"/home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp.loc-supp"' not /home/seurer/llvm/build/llvm-test/projects/compiler-rt/test/ubsan/MemorySanitizer-powerpc64le/TestCases/TypeCheck/Output/vptr.cpp.tmp x- 2>&1 | FileCheck /home/seurer/llvm/llvm-test/projects/compiler-rt/test/ubsan/TestCases/TypeCheck/vptr.cpp --check-prefix=CHECK-LOC-SUPPRESS
> --
> Exit Code: 1
> 
> Command Output (stderr):
> --
> /home/seurer/llvm/llvm-test/projects/compiler-rt/test/ubsan/TestCases/TypeCheck/vptr.cpp:46:12: warning: direct base 'S' is inaccessible due to ambiguity:
>    struct U -> struct S
>    struct U -> struct T -> struct S [-Winaccessible-base]
> struct U : S, T { virtual int v() { return 2; } };
>           ^
> /home/seurer/llvm/llvm-test/projects/compiler-rt/test/ubsan/TestCases/TypeCheck/vptr.cpp:93:9: warning: 'reinterpret_cast' from class 'U *' to its base at non-zero offset 'T *' behaves differently from 'static_cast' [-Wreinterpret-base-class]
>    p = reinterpret_cast<T*>(new U);
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~
> /home/seurer/llvm/llvm-test/projects/compiler-rt/test/ubsan/TestCases/TypeCheck/vptr.cpp:93:9: note: use 'static_cast' to adjust the pointer correctly while upcasting
>    p = reinterpret_cast<T*>(new U);
>        ^~~~~~~~~~~~~~~~
>        static_cast
> /home/seurer/llvm/llvm-test/projects/compiler-rt/test/ubsan/TestCases/TypeCheck/vptr.cpp:153:12: warning: 'reinterpret_cast' to class 'U *' from its base at non-zero offset 'T *' behaves differently from 'static_cast' [-Wreinterpret-base-class]
>    return reinterpret_cast<U*>(p)->v() - 2;
>           ^~~~~~~~~~~~~~~~~~~~~~~
> /home/seurer/llvm/llvm-test/projects/compiler-rt/test/ubsan/TestCases/TypeCheck/vptr.cpp:153:12: note: use 'static_cast' to adjust the pointer correctly while downcasting
>    return reinterpret_cast<U*>(p)->v() - 2;
>           ^~~~~~~~~~~~~~~~
>           static_cast
> 3 warnings generated.
> Test case: rT
> Test case: mT
> Test case: fT
> Test case: cT
> Test case: rU
> Test case: mU
> Test case: fU
> Test case: cU
> Test case: rS
> Test case: rV
> Test case: oV
> /home/seurer/llvm/llvm-test/projects/compiler-rt/test/ubsan/TestCases/TypeCheck/vptr.cpp:124:27: error: expected string not found in input
>    // CHECK-MEMBER-NEXT: {{^ .. .. .. ..  .. .. .. .. .. .. .. ..  }}
>                          ^
> <stdin>:4:1: note: scanning from here
> <memory cannot be printed>
> ^
> <stdin>:5:10: note: possible intended match here
>    #0 0x26d6ca38 in access_p(T*, char) /home/seurer/llvm/llvm-test/projects/compiler-rt/test/ubsan/TestCases/TypeCheck/vptr.cpp:128:15
>         ^
> 
> --
> 
> ********************
> 
> . . .
> 
> ********************
> Failing Tests (1):
>    UBSan-MSan-powerpc64le :: TestCases/TypeCheck/vptr.cpp
> 
>  Expected Passes    : 135
>  Expected Failures  : 1
>  Unsupported Tests  : 7
>  Unexpected Failures: 1
> 
> 
> Note that it is a known issue that the bots do not handle compiler_rt changes very well.
> 
> On 08/23/16 19:18, Vitaly Buka via llvm-commits wrote:
>> For some reasons the bot does not report compiler-rt changes, and the
>> build had something very relevant:
>> http://llvm.org/viewvc/llvm-project?revision=279572&view=revision
>> 
>> On Tue, Aug 23, 2016 at 4:19 PM Vitaly Buka <vitalybuka at google.com
>> <mailto:vitalybuka at google.com>> wrote:
>> 
>>    I have no hardware. I will try to build different revisions on the
>>    bot to localize issue.
>> 
>>    On Tue, Aug 23, 2016 at 4:08 PM Matthias Braun <matze at braunis.de
>>    <mailto:matze at braunis.de>> wrote:
>> 
>>        I don't see a connection between the changes and the error
>>        symptom... Do you have the possibility to revert just this patch
>>        to verify?
>> 
>>>        On Aug 23, 2016, at 3:13 PM, Vitaly Buka
>>>        <vitalybuka at google.com <mailto:vitalybuka at google.com>> wrote:
>>> 
>>>        This
>>>        patch? http://lab.llvm.org:8011/builders/clang-ppc64be-linux/builds/9417/steps/ninja%20check%201/logs/stdio
>>> 
>>>        On Tue, Aug 23, 2016 at 2:27 PM Matthias Braun via
>>>        llvm-commits <llvm-commits at lists.llvm.org
>>>        <mailto:llvm-commits at lists.llvm.org>> wrote:
>>> 
>>>            Author: matze
>>>            Date: Tue Aug 23 16:19:49 2016
>>>            New Revision: 279573
>>> 
>>>            URL: http://llvm.org/viewvc/llvm-project?rev=279573&view=rev
>>>            Log:
>>>            MachineFunction: Introduce NoPHIs property
>>> 
>>>            I want to compute the SSA property of .mir files
>>>            automatically in
>>>            upcoming patches. The problem with this is that some
>>>            inputs will be
>>>            reported as static single assignment with some passes
>>>            claiming not to
>>>            support SSA form.  In reality though those passes do not
>>>            support PHI
>>>            instructions => Track the presence of PHI instructions
>>>            separate from the
>>>            SSA property.
>>> 
>>>            Differential Revision: https://reviews.llvm.org/D22719
>>> 
>>>            Modified:
>>>                llvm/trunk/include/llvm/CodeGen/MachineFunction.h
>>>                llvm/trunk/lib/CodeGen/MIRParser/MIRParser.cpp
>>>                llvm/trunk/lib/CodeGen/MachineFunction.cpp
>>>                llvm/trunk/lib/CodeGen/MachineVerifier.cpp
>>>                llvm/trunk/lib/CodeGen/PHIElimination.cpp
>>>                llvm/trunk/lib/CodeGen/RegAllocBasic.cpp
>>>                llvm/trunk/lib/CodeGen/RegAllocFast.cpp
>>>                llvm/trunk/lib/CodeGen/RegAllocGreedy.cpp
>>>                llvm/trunk/lib/CodeGen/RegAllocPBQP.cpp
>>>                llvm/trunk/lib/Target/AMDGPU/SILoadStoreOptimizer.cpp
>>> 
>>>            Modified: llvm/trunk/include/llvm/CodeGen/MachineFunction.h
>>>            URL:
>>>            http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/MachineFunction.h?rev=279573&r1=279572&r2=279573&view=diff
>>>            ==============================================================================
>>>            --- llvm/trunk/include/llvm/CodeGen/MachineFunction.h
>>>            (original)
>>>            +++ llvm/trunk/include/llvm/CodeGen/MachineFunction.h Tue
>>>            Aug 23 16:19:49 2016
>>>            @@ -92,6 +92,7 @@ public:
>>>               // Property descriptions:
>>>               // IsSSA: True when the machine function is in SSA form
>>>            and virtual registers
>>>               //  have a single def.
>>>            +  // NoPHIs: The machine function does not contain any
>>>            PHI instruction.
>>>               // TracksLiveness: True when tracking register liveness
>>>            accurately.
>>>               //  While this property is set, register liveness
>>>            information in basic block
>>>               //  live-in lists and machine instruction operands
>>>            (e.g. kill flags, implicit
>>>            @@ -117,6 +118,7 @@ public:
>>>               //  all sizes attached to them have been eliminated.
>>>               enum class Property : unsigned {
>>>                 IsSSA,
>>>            +    NoPHIs,
>>>                 TracksLiveness,
>>>                 AllVRegsAllocated,
>>>                 Legalized,
>>> 
>>>            Modified: llvm/trunk/lib/CodeGen/MIRParser/MIRParser.cpp
>>>            URL:
>>>            http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/MIRParser/MIRParser.cpp?rev=279573&r1=279572&r2=279573&view=diff
>>>            ==============================================================================
>>>            --- llvm/trunk/lib/CodeGen/MIRParser/MIRParser.cpp (original)
>>>            +++ llvm/trunk/lib/CodeGen/MIRParser/MIRParser.cpp Tue Aug
>>>            23 16:19:49 2016
>>>            @@ -160,6 +160,8 @@ private:
>>>               ///
>>>               /// Return null if the name isn't a register bank.
>>>               const RegisterBank *getRegBank(const MachineFunction
>>>            &MF, StringRef Name);
>>>            +
>>>            +  void computeFunctionProperties(MachineFunction &MF);
>>>             };
>>> 
>>>             } // end namespace llvm
>>>            @@ -279,6 +281,19 @@ void MIRParserImpl::createDummyFunction(
>>>               new UnreachableInst(Context, BB);
>>>             }
>>> 
>>>            +static bool hasPHI(const MachineFunction &MF) {
>>>            +  for (const MachineBasicBlock &MBB : MF)
>>>            +    for (const MachineInstr &MI : MBB)
>>>            +      if (MI.isPHI())
>>>            +        return true;
>>>            +  return false;
>>>            +}
>>>            +
>>>            +void
>>>            MIRParserImpl::computeFunctionProperties(MachineFunction
>>>            &MF) {
>>>            +  if (!hasPHI(MF))
>>>            +
>>>            MF.getProperties().set(MachineFunctionProperties::Property::NoPHIs);
>>>            +}
>>>            +
>>>             bool
>>>            MIRParserImpl::initializeMachineFunction(MachineFunction
>>>            &MF) {
>>>               auto It = Functions.find(MF.getName());
>>>               if (It == Functions.end())
>>>            @@ -353,6 +368,9 @@ bool MIRParserImpl::initializeMachineFun
>>>               PFS.SM <http://pfs.sm/> = &SM;
>>> 
>>>               inferRegisterInfo(PFS, YamlMF);
>>>            +
>>>            +  computeFunctionProperties(MF);
>>>            +
>>>               // FIXME: This is a temporary workaround until the
>>>            reserved registers can be
>>>               // serialized.
>>>               MF.getRegInfo().freezeReservedRegs(MF);
>>> 
>>>            Modified: llvm/trunk/lib/CodeGen/MachineFunction.cpp
>>>            URL:
>>>            http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/MachineFunction.cpp?rev=279573&r1=279572&r2=279573&view=diff
>>>            ==============================================================================
>>>            --- llvm/trunk/lib/CodeGen/MachineFunction.cpp (original)
>>>            +++ llvm/trunk/lib/CodeGen/MachineFunction.cpp Tue Aug 23
>>>            16:19:49 2016
>>>            @@ -60,6 +60,7 @@ static const char *getPropertyName(Machi
>>>               case P::AllVRegsAllocated: return "AllVRegsAllocated";
>>>               case P::IsSSA: return "IsSSA";
>>>               case P::Legalized: return "Legalized";
>>>            +  case P::NoPHIs: return "NoPHIs";
>>>               case P::RegBankSelected: return "RegBankSelected";
>>>               case P::Selected: return "Selected";
>>>               case P::TracksLiveness: return "TracksLiveness";
>>> 
>>>            Modified: llvm/trunk/lib/CodeGen/MachineVerifier.cpp
>>>            URL:
>>>            http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/MachineVerifier.cpp?rev=279573&r1=279572&r2=279573&view=diff
>>>            ==============================================================================
>>>            --- llvm/trunk/lib/CodeGen/MachineVerifier.cpp (original)
>>>            +++ llvm/trunk/lib/CodeGen/MachineVerifier.cpp Tue Aug 23
>>>            16:19:49 2016
>>>            @@ -858,6 +858,10 @@ void MachineVerifier::visitMachineInstrB
>>>                     << MI->getNumOperands() << " given.\n";
>>>               }
>>> 
>>>            +  if (MI->isPHI() && MF->getProperties().hasProperty(
>>>            +          MachineFunctionProperties::Property::NoPHIs))
>>>            +    report("Found PHI instruction with NoPHIs property
>>>            set", MI);
>>>            +
>>>               // Check the tied operands.
>>>               if (MI->isInlineAsm())
>>>                 verifyInlineAsm(MI);
>>> 
>>>            Modified: llvm/trunk/lib/CodeGen/PHIElimination.cpp
>>>            URL:
>>>            http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/PHIElimination.cpp?rev=279573&r1=279572&r2=279573&view=diff
>>>            ==============================================================================
>>>            --- llvm/trunk/lib/CodeGen/PHIElimination.cpp (original)
>>>            +++ llvm/trunk/lib/CodeGen/PHIElimination.cpp Tue Aug 23
>>>            16:19:49 2016
>>>            @@ -175,6 +175,8 @@ bool PHIElimination::runOnMachineFunctio
>>>               ImpDefs.clear();
>>>               VRegPHIUseCount.clear();
>>> 
>>>            +
>>>            MF.getProperties().set(MachineFunctionProperties::Property::NoPHIs);
>>>            +
>>>               return Changed;
>>>             }
>>> 
>>> 
>>>            Modified: llvm/trunk/lib/CodeGen/RegAllocBasic.cpp
>>>            URL:
>>>            http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/RegAllocBasic.cpp?rev=279573&r1=279572&r2=279573&view=diff
>>>            ==============================================================================
>>>            --- llvm/trunk/lib/CodeGen/RegAllocBasic.cpp (original)
>>>            +++ llvm/trunk/lib/CodeGen/RegAllocBasic.cpp Tue Aug 23
>>>            16:19:49 2016
>>>            @@ -105,6 +105,11 @@ public:
>>>               /// Perform register allocation.
>>>               bool runOnMachineFunction(MachineFunction &mf) override;
>>> 
>>>            +  MachineFunctionProperties getRequiredProperties() const
>>>            override {
>>>            +    return MachineFunctionProperties().set(
>>>            +        MachineFunctionProperties::Property::NoPHIs);
>>>            +  }
>>>            +
>>>               // Helper for spilling all live virtual registers
>>>            currently unified under preg
>>>               // that interfere with the most recently queried lvr.
>>>            Return true if spilling
>>>               // was successful, and append any new spilled/split
>>>            intervals to splitLVRs.
>>> 
>>>            Modified: llvm/trunk/lib/CodeGen/RegAllocFast.cpp
>>>            URL:
>>>            http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/RegAllocFast.cpp?rev=279573&r1=279572&r2=279573&view=diff
>>>            ==============================================================================
>>>            --- llvm/trunk/lib/CodeGen/RegAllocFast.cpp (original)
>>>            +++ llvm/trunk/lib/CodeGen/RegAllocFast.cpp Tue Aug 23
>>>            16:19:49 2016
>>>            @@ -158,6 +158,11 @@ namespace {
>>>                   MachineFunctionPass::getAnalysisUsage(AU);
>>>                 }
>>> 
>>>            +    MachineFunctionProperties getRequiredProperties()
>>>            const override {
>>>            +      return MachineFunctionProperties().set(
>>>            +          MachineFunctionProperties::Property::NoPHIs);
>>>            +    }
>>>            +
>>>                 MachineFunctionProperties getSetProperties() const
>>>            override {
>>>                   return MachineFunctionProperties().set(
>>> 
>>>             MachineFunctionProperties::Property::AllVRegsAllocated);
>>>            @@ -1093,8 +1098,6 @@ bool RAFast::runOnMachineFunction(Machin
>>>               UsedInInstr.clear();
>>>               UsedInInstr.setUniverse(TRI->getNumRegUnits());
>>> 
>>>            -  assert(!MRI->isSSA() && "regalloc requires leaving SSA");
>>>            -
>>>               // initialize the virtual->physical register map to
>>>            have a 'null'
>>>               // mapping for all virtual registers
>>>               StackSlotForVirtReg.resize(MRI->getNumVirtRegs());
>>> 
>>>            Modified: llvm/trunk/lib/CodeGen/RegAllocGreedy.cpp
>>>            URL:
>>>            http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/RegAllocGreedy.cpp?rev=279573&r1=279572&r2=279573&view=diff
>>>            ==============================================================================
>>>            --- llvm/trunk/lib/CodeGen/RegAllocGreedy.cpp (original)
>>>            +++ llvm/trunk/lib/CodeGen/RegAllocGreedy.cpp Tue Aug 23
>>>            16:19:49 2016
>>>            @@ -334,6 +334,11 @@ public:
>>>               /// Perform register allocation.
>>>               bool runOnMachineFunction(MachineFunction &mf) override;
>>> 
>>>            +  MachineFunctionProperties getRequiredProperties() const
>>>            override {
>>>            +    return MachineFunctionProperties().set(
>>>            +        MachineFunctionProperties::Property::NoPHIs);
>>>            +  }
>>>            +
>>>               static char ID;
>>> 
>>>             private:
>>> 
>>>            Modified: llvm/trunk/lib/CodeGen/RegAllocPBQP.cpp
>>>            URL:
>>>            http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/RegAllocPBQP.cpp?rev=279573&r1=279572&r2=279573&view=diff
>>>            ==============================================================================
>>>            --- llvm/trunk/lib/CodeGen/RegAllocPBQP.cpp (original)
>>>            +++ llvm/trunk/lib/CodeGen/RegAllocPBQP.cpp Tue Aug 23
>>>            16:19:49 2016
>>>            @@ -109,6 +109,11 @@ public:
>>>               /// Perform register allocation
>>>               bool runOnMachineFunction(MachineFunction &MF) override;
>>> 
>>>            +  MachineFunctionProperties getRequiredProperties() const
>>>            override {
>>>            +    return MachineFunctionProperties().set(
>>>            +        MachineFunctionProperties::Property::NoPHIs);
>>>            +  }
>>>            +
>>>             private:
>>> 
>>>               typedef std::map<const LiveInterval*, unsigned> LI2NodeMap;
>>> 
>>>            Modified:
>>>            llvm/trunk/lib/Target/AMDGPU/SILoadStoreOptimizer.cpp
>>>            URL:
>>>            http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AMDGPU/SILoadStoreOptimizer.cpp?rev=279573&r1=279572&r2=279573&view=diff
>>>            ==============================================================================
>>>            --- llvm/trunk/lib/Target/AMDGPU/SILoadStoreOptimizer.cpp
>>>            (original)
>>>            +++ llvm/trunk/lib/Target/AMDGPU/SILoadStoreOptimizer.cpp
>>>            Tue Aug 23 16:19:49 2016
>>>            @@ -98,6 +98,11 @@ public:
>>>                 return "SI Load / Store Optimizer";
>>>               }
>>> 
>>>            +  MachineFunctionProperties getRequiredProperties() const
>>>            override {
>>>            +    return MachineFunctionProperties().set(
>>>            +      MachineFunctionProperties::Property::NoPHIs);
>>>            +  }
>>>            +
>>>               void getAnalysisUsage(AnalysisUsage &AU) const override {
>>>                 AU.setPreservesCFG();
>>>                 AU.addPreserved<SlotIndexes>();
>>>            @@ -425,8 +430,6 @@ bool SILoadStoreOptimizer::runOnMachineF
>>> 
>>>               DEBUG(dbgs() << "Running SILoadStoreOptimizer\n");
>>> 
>>>            -  assert(!MRI->isSSA());
>>>            -
>>>               bool Modified = false;
>>> 
>>>               for (MachineBasicBlock &MBB : MF)
>>> 
>>> 
>>>            _______________________________________________
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>>>            llvm-commits at lists.llvm.org
>>>            <mailto:llvm-commits at lists.llvm.org>
>>>            http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-commits
>>> 
>> 
>> 
>> 
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> 
> 
> -- 
> 
> -Bill Seurer
> 
> _______________________________________________
> llvm-commits mailing list
> llvm-commits at lists.llvm.org
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