llvm dev - Feb 2021 - LLVM ERROR: Broken module found, compilation aborted!

HI Team,

One of our customer is facing the following error, could you please provide more
information on this?

Instruction does not dominate all uses!
  %53 = icmp ugt i32 %47, %27
  %50 = select i1 %53, i32 128, i32 8, !dbg !268
LLVM ERROR: Broken module found, compilation aborted!
clang-6.0: error: Xtensa-ld command failed with exit code 1 (use -v to see
invocation)
CTC++ error 8: Cannot execute C or C++ compiler or compilation failed: 0x100
(error from coverage tool)
ninja: build stopped: subcommand failed.

Compilation is failed due to compiler error, any inputs to understand this error
will be helpful?

Thanks,
Mohan Reddy.
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On Fri, Feb 12, 2021 at 11:18 AM Mohan Reddy via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> HI Team,
>
>
>
> One of our customer is facing the following error, could you please
> provide more information on this?
>
>
>
> Instruction does not dominate all uses!
>
>   %53 = icmp ugt i32 %47, %27
>
>   %50 = select i1 %53, i32 128, i32 8, !dbg !268
>
> LLVM ERROR: Broken module found, compilation aborted!
>
This indicates that an instruction is using a value produced by an
instruction later in the program, like if you write in C++:

foo(a);
int a = 0;

This can be introduced by a bug in a transformation (most likely) or by the
frontend directly.

You have to ask the vendor of your compiler though (it looks like it isn't
a vanilla LLVM).

Best,

-- 
Mehdi


> clang-6.0: error: Xtensa-ld command failed with exit code 1 (use -v to see
> invocation)
>
> CTC++ error 8: Cannot execute C or C++ compiler or compilation failed:
> 0x100 (error from coverage tool)
>
> ninja: build stopped: subcommand failed.
>
>
>
> Compilation is failed due to compiler error, any inputs to understand this
> error will be helpful?
>
>
>
> Thanks,
>
> Mohan Reddy.
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
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