[QC][Vulkan] `/Feature/HLSLLib /f32tof16.test` failling

[joaosaffran]

/Feature/HLSLLib
/f32tof16.test is failling on vk qc runs

first time issue was detected: https://github.com/llvm/offload-test-suite/actions/runs/23159908311

Stack trace:

2026-03-16T21:02:01.8624281Z ******************** TEST 'OffloadTest-clang-vk :: Feature/HLSLLib/f32tof16.test' FAILED ********************
2026-03-16T21:02:01.8654842Z Exit Code: 1
2026-03-16T21:02:01.8655017Z 
2026-03-16T21:02:01.8660062Z Command Output (stdout):
2026-03-16T21:02:01.8663363Z --
2026-03-16T21:02:01.8667524Z # RUN: at line 87
2026-03-16T21:02:01.8674888Z c:\actions-runner\_work\offload-test-suite\offload-test-suite\llvm-project\build\bin\split-file.exe C:\actions-runner\_work\offload-test-suite\offload-test-suite\OffloadTest\test\Feature\HLSLLib\f32tof16.test C:\actions-runner\_work\offload-test-suite\offload-test-suite\llvm-project\build\tools\OffloadTest\test\clang-vk\Feature\HLSLLib\Output\f32tof16.test.tmp
2026-03-16T21:02:01.8699979Z # executed command: 'c:\actions-runner\_work\offload-test-suite\offload-test-suite\llvm-project\build\bin\split-file.exe' 'C:\actions-runner\_work\offload-test-suite\offload-test-suite\OffloadTest\test\Feature\HLSLLib\f32tof16.test' 'C:\actions-runner\_work\offload-test-suite\offload-test-suite\llvm-project\build\tools\OffloadTest\test\clang-vk\Feature\HLSLLib\Output\f32tof16.test.tmp'
2026-03-16T21:02:01.8705657Z # RUN: at line 88
2026-03-16T21:02:01.8707315Z c:\actions-runner\_work\offload-test-suite\offload-test-suite\llvm-project\build\bin\clang-dxc.exe -spirv -fspv-target-env=vulkan1.3 -fspv-extension=DXC --dxv-path=C:/actions-runner/_work/offload-test-suite/offload-test-suite/DXC/build/bin -T cs_6_5 -Fo C:\actions-runner\_work\offload-test-suite\offload-test-suite\llvm-project\build\tools\OffloadTest\test\clang-vk\Feature\HLSLLib\Output\f32tof16.test.tmp.o C:\actions-runner\_work\offload-test-suite\offload-test-suite\llvm-project\build\tools\OffloadTest\test\clang-vk\Feature\HLSLLib\Output\f32tof16.test.tmp/source.hlsl
2026-03-16T21:02:01.8710654Z # executed command: 'c:\actions-runner\_work\offload-test-suite\offload-test-suite\llvm-project\build\bin\clang-dxc.exe' -spirv -fspv-target-env=vulkan1.3 -fspv-extension=DXC --dxv-path=C:/actions-runner/_work/offload-test-suite/offload-test-suite/DXC/build/bin -T cs_6_5 -Fo 'C:\actions-runner\_work\offload-test-suite\offload-test-suite\llvm-project\build\tools\OffloadTest\test\clang-vk\Feature\HLSLLib\Output\f32tof16.test.tmp.o' 'C:\actions-runner\_work\offload-test-suite\offload-test-suite\llvm-project\build\tools\OffloadTest\test\clang-vk\Feature\HLSLLib\Output\f32tof16.test.tmp/source.hlsl'
2026-03-16T21:02:01.8712384Z # RUN: at line 89
2026-03-16T21:02:01.8713903Z c:\actions-runner\_work\offload-test-suite\offload-test-suite\llvm-project\build\bin\offloader.exe -debug-layer C:\actions-runner\_work\offload-test-suite\offload-test-suite\llvm-project\build\tools\OffloadTest\test\clang-vk\Feature\HLSLLib\Output\f32tof16.test.tmp/pipeline.yaml C:\actions-runner\_work\offload-test-suite\offload-test-suite\llvm-project\build\tools\OffloadTest\test\clang-vk\Feature\HLSLLib\Output\f32tof16.test.tmp.o
2026-03-16T21:02:01.8716307Z # executed command: 'c:\actions-runner\_work\offload-test-suite\offload-test-suite\llvm-project\build\bin\offloader.exe' -debug-layer 'C:\actions-runner\_work\offload-test-suite\offload-test-suite\llvm-project\build\tools\OffloadTest\test\clang-vk\Feature\HLSLLib\Output\f32tof16.test.tmp/pipeline.yaml' 'C:\actions-runner\_work\offload-test-suite\offload-test-suite\llvm-project\build\tools\OffloadTest\test\clang-vk\Feature\HLSLLib\Output\f32tof16.test.tmp.o'
2026-03-16T21:02:01.8717835Z # .---command stdout------------
2026-03-16T21:02:01.8718008Z # | Using Vulkan API
2026-03-16T21:02:01.8718160Z # | Physical device created.
2026-03-16T21:02:01.8718332Z # | Shader module created.
2026-03-16T21:02:01.8718493Z # | Copy command buffer created.
2026-03-16T21:02:01.8718666Z # | Memory buffers created.
2026-03-16T21:02:01.8718833Z # | Executed copy command buffer.
2026-03-16T21:02:01.8719018Z # | Execute command buffer created.
2026-03-16T21:02:01.8719206Z # | Descriptors: { type = 7, count = 2 }
2026-03-16T21:02:01.8719402Z # | Descriptor pool created.
2026-03-16T21:02:01.8719568Z # | Binding 2 descriptors.
2026-03-16T21:02:01.8719735Z # | Num Descriptor sets: 1
2026-03-16T21:02:01.8719906Z # | Updating Descriptor [0] { 0, 0 }
2026-03-16T21:02:01.8720086Z # | Updating Descriptor [1] { 0, 1 }
2026-03-16T21:02:01.8720268Z # | WriteDescriptors: 2
2026-03-16T21:02:01.8720424Z # | Descriptor sets created.
2026-03-16T21:02:01.8720595Z # | Compute pipeline created.
2026-03-16T21:02:01.8720770Z # | Dispatched compute shader: { 1, 1, 1 }
2026-03-16T21:02:01.8720962Z # | Commands created.
2026-03-16T21:02:01.8721123Z # | Executed compute command buffer.
2026-03-16T21:02:01.8721310Z # | Compute pipeline created.
2026-03-16T21:02:01.8721477Z # | Cleanup complete.
2026-03-16T21:02:01.8721631Z # `-----------------------------
2026-03-16T21:02:01.8721801Z # .---command stderr------------
2026-03-16T21:02:01.8721967Z # | Test failed: Test1
2026-03-16T21:02:01.8722126Z # | Comparison Rule: BufferExact
2026-03-16T21:02:01.8722293Z # | Expected:
2026-03-16T21:02:01.8722421Z # | ---
2026-03-16T21:02:01.8722550Z # | Name:            ExpectedOut
2026-03-16T21:02:01.8722716Z # | Format:          UInt32
2026-03-16T21:02:01.8722871Z # | Stride:          4
2026-03-16T21:02:01.8723067Z # | Data:            [ 0, 1, 1023, 1024, 13653, 15359, 15360, 15361, 31743, 
2026-03-16T21:02:01.8723325Z # |                    16968, 15360, 32768, 31744, 64512, 47768, 20800 ]
2026-03-16T21:02:01.8723545Z # | OutputProps:
2026-03-16T21:02:01.8723685Z # |   Height:          0
2026-03-16T21:02:01.8723843Z # |   Width:           0
2026-03-16T21:02:01.8723992Z # |   Depth:           0
2026-03-16T21:02:01.8724131Z # | ...
2026-03-16T21:02:01.8724246Z # | Got:
2026-03-16T21:02:01.8724359Z # | ---
2026-03-16T21:02:01.8724480Z # | Name:            Out
2026-03-16T21:02:01.8724627Z # | Format:          UInt32
2026-03-16T21:02:01.8724779Z # | Stride:          4
2026-03-16T21:02:01.8724970Z # | Data:            [ 0, 0, 0, 1024, 13653, 15359, 15360, 15361, 31743, 16968, 
2026-03-16T21:02:01.8725233Z # |                    15360, 32768, 31744, 64512, 47768, 20800 ]
2026-03-16T21:02:01.8725442Z # | OutputProps:
2026-03-16T21:02:01.8725576Z # |   Height:          0
2026-03-16T21:02:01.8725722Z # |   Width:           0
2026-03-16T21:02:01.8725867Z # |   Depth:           0
2026-03-16T21:02:01.8726006Z # | ...
2026-03-16T21:02:01.8726171Z # | Full Hex 64bit representation of Expected Buffer Values:
2026-03-16T21:02:01.8727421Z # | [ 0x0, 0x1, 0x3ff, 0x400, 0x3555, 0x3bff, 0x3c00, 0x3c01, 0x7bff, 0x4248, 0x3c00, 0x8000, 0x7c00, 0xfc00, 0xba98, 0x5140 ]
2026-03-16T21:02:01.8727843Z # | Full Hex 64bit representation of Actual Buffer Values:
2026-03-16T21:02:01.8728230Z # | [ 0x0, 0x0, 0x0, 0x400, 0x3555, 0x3bff, 0x3c00, 0x3c01, 0x7bff, 0x4248, 0x3c00, 0x8000, 0x7c00, 0xfc00, 0xba98, 0x5140 ]
2026-03-16T21:02:01.8728615Z # | 
2026-03-16T21:02:01.8728735Z # `-----------------------------
2026-03-16T21:02:01.8728927Z # error: command failed with exit status: 1
2026-03-16T21:02:01.8729072Z 
2026-03-16T21:02:01.8729630Z --
2026-03-16T21:02:01.8729696Z 
2026-03-16T21:02:01.8729749Z ********************