llvm dev - Oct 2013 - [LLVMdev] basic-arm-instruction tests fail on trunk

FWIW this passes with trunk now (bootstrapped with clang).


On Mon, Oct 7, 2013 at 8:33 PM, İsmail Dönmez <ismail at donmez.ws> wrote:
> This is with Linux on BeagleBone Black (Cortex-A8), regressed recently:
>
>
> FAIL: LLVM :: MC/ARM/basic-arm-instructions.s (5404 of 8944)
> ******************** TEST 'LLVM :: MC/ARM/basic-arm-instructions.s'
FAILED
> ********************
> Script:
> --
> /havana/work/llvm/build/Release+Asserts/bin/llvm-mc
> -triple=armv7-apple-darwin -mcpu=cortex-a8 -show-encoding <
> /havana/work/llvm/test/MC/ARM/basic-arm-instructions.s |
> /havana/work/llvm/build/Release+Asserts/bin/FileCheck
> /havana/work/llvm/test/MC/ARM/basic-arm-instructions.s
> --
> Exit Code: 1
>
> Command Output (stderr):
> --
> /havana/work/llvm/test/MC/ARM/basic-arm-instructions.s:2935:10: error:
> expected string not found in input
> @ CHECK: wfi @ encoding: [0x03,0xf0,0x20,0xe3]
>          ^
> <stdin>:2929:2: note: scanning from here
>  sev @ encoding: [0x03,0xf0,0x20,0xe3]
>  ^
> <stdin>:2935:2: note: possible intended match here
>  wfe @ encoding: [0x02,0xf0,0x20,0xe3]
>  ^
>
> --
>
> ********************
> FAIL: LLVM :: MC/ARM/basic-thumb2-instructions.s (5407 of 8944)
> ******************** TEST 'LLVM ::
MC/ARM/basic-thumb2-instructions.s'
> FAILED ********************
> Script:
> --
> /havana/work/llvm/build/Release+Asserts/bin/llvm-mc
> -triple=thumbv7-apple-darwin -mcpu=cortex-a8 -show-encoding <
> /havana/work/llvm/test/MC/ARM/basic-thumb2-instructions.s |
> /havana/work/llvm/build/Release+Asserts/bin/FileCheck
> /havana/work/llvm/test/MC/ARM/basic-thumb2-instructions.s
> --
> Exit Code: 1
>
> Command Output (stderr):
> --
> /havana/work/llvm/test/MC/ARM/basic-thumb2-instructions.s:3609:10: error:
> expected string not found in input
> @ CHECK: wfi.w @ encoding: [0xaf,0xf3,0x03,0x80]
>          ^
> <stdin>:3606:2: note: scanning from here
>  sev.w @ encoding: [0xaf,0xf3,0x03,0x80]
>  ^
> <stdin>:3607:2: note: possible intended match here
>  wfe.w @ encoding: [0xaf,0xf3,0x02,0x80]
>  ^
>
> --
>
> ********************
> FAIL: LLVM :: MC/Disassembler/ARM/basic-arm-instructions.txt (5656 of 8944)
> ******************** TEST 'LLVM ::
> MC/Disassembler/ARM/basic-arm-instructions.txt' FAILED
********************
> Script:
> --
> /havana/work/llvm/build/Release+Asserts/bin/llvm-mc
> -triple=armv7-apple-darwin -mcpu=cortex-a8 -disassemble <
> /havana/work/llvm/test/MC/Disassembler/ARM/basic-arm-instructions.txt |
> /havana/work/llvm/build/Release+Asserts/bin/FileCheck
> /havana/work/llvm/test/MC/Disassembler/ARM/basic-arm-instructions.txt
> --
> Exit Code: 1
>
> Command Output (stderr):
> --
>
/havana/work/llvm/test/MC/Disassembler/ARM/basic-arm-instructions.txt:2419:10:
> error: expected string not found in input
> # CHECK: wfi
>          ^
> <stdin>:811:2: note: scanning from here
>  sev
>  ^
>
> --
>
> ********************
>
> Any ideas?
>
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On 10 October 2013 08:48, İsmail Dönmez <ismail at donmez.ws> wrote:
> FWIW this passes with trunk now (bootstrapped with clang).
>
Good news, but not great news. ;)

The MCJIT tests are notoriously noisy on ARM (maybe others, too, I don't
know), and I had to disable a whole bunch of them in the past. It may be
that they will appear again, not necessarily the same ones, though. I don't
remember the root cause of such noise (it's in this list, somewhere), but
generally a "make clean" solves most issues.

cheers,
--renato
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