[llvm-bugs] [Bug 30411] New: multiple piglit builtin-char* and others test regressed

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=30411

            Bug ID: 30411
           Summary: multiple piglit builtin-char* and others test
                    regressed
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Keywords: regression
          Severity: normal
          Priority: P
         Component: Backend: AMDGPU
          Assignee: unassignedbugs at nondot.org
          Reporter: pavel.ondracka at email.cz
                CC: jan.vesely at rutgers.edu, llvm-bugs at lists.llvm.org
    Classification: Unclassified

Multiple piglit builtin-char* and builtin-uchar* tests regressed, in total
around 170 tests.
The char1 variant of the tests passes, the rest is failing. 

This also affects some of the the builtin-short* and builtin-ushort* tests (at
least the few ones that are not affected by bug 28915).

commit 79944cc240c9f5f073fdc8025a94117f6cd83f9b
Author: Jan Vesely <jan.vesely at rutgers.edu>
Date:   Mon Aug 29 22:05:06 2016 +0000

    AMDGPU/R600: Remove MergeVectorStores from legalization

    This is handled by DAGCombiner in a more generic way

    Differential Revision: https://reviews.llvm.org/D23970

I also did check that revert fixes the problems.

My system:
GPU: 06:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Caicos XTX [Radeon HD 8490 / R5 235X OEM]
llvm: 88a23b601602f7f3a0ddc861af8be0eb29878d9a
mesa: e1ea36ae719619e69dadaf7efa7c7a40f891be91
libclc: b091e26cb1945750fb4eb004dd6a9e9917ce810a

Example failing test:

builtin-char-abs-1.0.generated:
## Test: Test char abs built-in on CL 1.1
(/home/ondracka/graphics/piglit/tests/cl/program/program-tester.c) ##

# Platform supporting only version 1.1. Running test on that version.
# Running on:
#   Platform: Clover
#   Device: AMD CAICOS (DRM 2.43.0 / 4.6.4-301.fc24.x86_64, LLVM 4.0.0)
#   OpenCL version: 1.2
#   OpenCL C version: 1.1
#   Build options:  -cl-std=CL1.1
Program has been built successfully
> Running kernel test: abs char1
Using kernel test_1_abs_char
Setting kernel arguments...
Running the kernel...
Validating results...
 Argument 0: PASS
> Running kernel test: abs char2
Using kernel test_2_abs_char
Setting kernel arguments...
Running the kernel...
Validating results...
Expecting 2 (0x2) with tolerance 0, but got 0 (0x0)
Error at uchar[2]
 Argument 0: FAIL
> Running kernel test: abs char4
Using kernel test_4_abs_char
Setting kernel arguments...
Running the kernel...
Validating results...
Expecting 2 (0x2) with tolerance 0, but got 0 (0x0)
Error at uchar[4]
 Argument 0: FAIL
> Running kernel test: abs char8
Using kernel test_8_abs_char
Setting kernel arguments...
Running the kernel...
Validating results...
Expecting 2 (0x2) with tolerance 0, but got 9 (0x9)
Error at uchar[8]
 Argument 0: FAIL
> Running kernel test: abs char16
Using kernel test_16_abs_char
Setting kernel arguments...
Running the kernel...
Validating results...
Expecting 0 (0x0) with tolerance 0, but got 127 (0x7f)
Error at uchar[4]
 Argument 0: FAIL
>> Some or all of the tests FAILED
# Result:

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