[llvm-bugs] [Bug 27481] New: X86 make check has a bunch of machine verifier errors

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=27481

            Bug ID: 27481
           Summary: X86 make check has a bunch of machine verifier errors
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: X86
          Assignee: unassignedbugs at nondot.org
          Reporter: qcolombet at apple.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

Switching the machine verifier ON by default (lib/CodeGen/Passes.cpp then
change the default value of the cl::opt related to the machine verifier) leads
to a bunch of machine verifier errors for make check:
    LLVM :: CodeGen/X86/cleanuppad-inalloca.ll
    LLVM :: CodeGen/X86/cmpxchg-clobber-flags.ll
    LLVM :: CodeGen/X86/cxx_tlscc64.ll
    LLVM :: CodeGen/X86/darwin-tls.ll
    LLVM :: CodeGen/X86/fast-isel-nontemporal.ll
    LLVM :: CodeGen/X86/i386-tlscall-fastregalloc.ll
    LLVM :: CodeGen/X86/implicit-null-check.ll
    LLVM :: CodeGen/X86/inalloca-ctor.ll
    LLVM :: CodeGen/X86/inalloca-invoke.ll
    LLVM :: CodeGen/X86/inalloca-regparm.ll
    LLVM :: CodeGen/X86/inalloca-stdcall.ll
    LLVM :: CodeGen/X86/inalloca.ll
    LLVM :: CodeGen/X86/machine-sink-and-implicit-null-checks.ll
    LLVM :: CodeGen/X86/musttail-indirect.ll
    LLVM :: CodeGen/X86/musttail-thiscall.ll
    LLVM :: CodeGen/X86/musttail-varargs.ll
    LLVM :: CodeGen/X86/peephole-na-phys-copy-folding.ll
    LLVM :: CodeGen/X86/pku.ll
    LLVM :: CodeGen/X86/rtm.ll
    LLVM :: CodeGen/X86/scheduler-backtracking.ll
    LLVM :: CodeGen/X86/shrink-wrap-chkstk.ll
    LLVM :: CodeGen/X86/sibcall-2.ll
    LLVM :: CodeGen/X86/sibcall.ll
    LLVM :: CodeGen/X86/stack-folding-fp-avx1.ll
    LLVM :: CodeGen/X86/stack-folding-fp-sse42.ll
    LLVM :: CodeGen/X86/tls-models.ll
    LLVM :: CodeGen/X86/tlv-1.ll
    LLVM :: CodeGen/X86/tlv-2.ll
    LLVM :: CodeGen/X86/win_coreclr_chkstk.ll
    LLVM :: CodeGen/X86/x32-function_pointer-1.ll
    LLVM :: CodeGen/X86/x86-64-stack-and-frame-ptr.ll
    LLVM :: CodeGen/X86/x86-interrupt_vzeroupper.ll
    LLVM :: CodeGen/X86/x86-shrink-wrapping.ll

This may be latent bugs.

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