[clang] Revert "[Clang] Warn about ignored dllimport on explicit instantiations" (PR #224971)

Mon Sep 21 03:32:42 PDT 2026

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `amdgpu-hip-blender` running on `AMD-bb-w-04` while building `clang` at step 3 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/232/builds/7191

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 3 (annotate) failure: '../llvm-zorg/zorg/buildbot/builders/annotated/hip-build.sh --jobs=' (failure)
...
exec_time: 0.0968 
hash: "" 
********************

Testing Time: 0.59s

Total Discovered Tests: 5
  Passed: 5 (100.00%)
[17/18] cd /home/botworker/bbot/hip-blender/botworker/amdgpu-hip-blender/test-suite-build/External/HIP && /opt/python/cp312-cp312/bin/python3.12 /home/botworker/bbot/hip-blender/botworker/amdgpu-hip-blender/llvm/bin/llvm-lit -v blender.test
-- Testing: 1 tests, 1 workers --
FAIL: test-suite :: External/HIP/blender.test (1 of 1)
******************** TEST 'test-suite :: External/HIP/blender.test' FAILED ********************

/home/botworker/bbot/hip-blender/botworker/amdgpu-hip-blender/test-suite-build/tools/timeit-target --timeout 7200 --limit-core 0 --limit-cpu 7200 --limit-file-size 209715200 --limit-rss-size 838860800 --append-exitstatus --redirect-output /home/botworker/bbot/hip-blender/botworker/amdgpu-hip-blender/test-suite-build/External/HIP/Output/blender.test.out --redirect-input /dev/null --summary /home/botworker/bbot/hip-blender/botworker/amdgpu-hip-blender/test-suite-build/External/HIP/Output/blender.test.time /bin/bash test_blender.sh
/bin/bash verify_blender.sh /home/botworker/bbot/hip-blender/botworker/amdgpu-hip-blender/test-suite-build/External/HIP/Output/blender.test.out
Begin Blender test.
TEST_SUITE_HIP_ROOT=/opt/botworker/llvm/External/hip
Render /opt/botworker/llvm/External/hip/Blender_Scenes/290skydemo_release.blend
Blender 4.1.1 (hash e1743a0317bc built 2024-04-15 23:47:45)
Read blend: "/opt/botworker/llvm/External/hip/Blender_Scenes/290skydemo_release.blend"
Could not open as Ogawa file from provided streams.
Unable to open /opt/botworker/llvm/External/hip/Blender_Scenes/290skydemo2_flags.abc
WARN (bke.modifier): source/blender/blenkernel/intern/modifier.cc:425 BKE_modifier_set_error: Object: "GEO-flag.002", Modifier: "MeshSequenceCache", Could not create reader for file //290skydemo2_flags.abc
WARN (bke.modifier): source/blender/blenkernel/intern/modifier.cc:425 BKE_modifier_set_error: Object: "GEO-flag.003", Modifier: "MeshSequenceCache", Could not create reader for file //290skydemo2_flags.abc
WARN (bke.modifier): source/blender/blenkernel/intern/modifier.cc:425 BKE_modifier_set_error: Object: "GEO-flag", Modifier: "MeshSequenceCache", Could not create reader for file //290skydemo2_flags.abc
WARN (bke.modifier): source/blender/blenkernel/intern/modifier.cc:425 BKE_modifier_set_error: Object: "GEO-flag.004", Modifier: "MeshSequenceCache", Could not create reader for file //290skydemo2_flags.abc
WARN (bke.modifier): source/blender/blenkernel/intern/modifier.cc:425 BKE_modifier_set_error: Object: "GEO-flag.001", Modifier: "MeshSequenceCache", Could not create reader for file //290skydemo2_flags.abc
Could not open as Ogawa file from provided streams.
Unable to open /opt/botworker/llvm/External/hip/Blender_Scenes/290skydemo2_flags.abc
WARN (bke.modifier): source/blender/blenkernel/intern/modifier.cc:425 BKE_modifier_set_error: Object: "GEO-flag.004", Modifier: "MeshSequenceCache", Could not create reader for file //290skydemo2_flags.abc
WARN (bke.modifier): source/blender/blenkernel/intern/modifier.cc:425 BKE_modifier_set_error: Object: "GEO-flag.003", Modifier: "MeshSequenceCache", Could not create reader for file //290skydemo2_flags.abc
WARN (bke.modifier): source/blender/blenkernel/intern/modifier.cc:425 BKE_modifier_set_error: Object: "GEO-flag", Modifier: "MeshSequenceCache", Could not create reader for file //290skydemo2_flags.abc
WARN (bke.modifier): source/blender/blenkernel/intern/modifier.cc:425 BKE_modifier_set_error: Object: "GEO-flag.001", Modifier: "MeshSequenceCache", Could not create reader for file //290skydemo2_flags.abc
WARN (bke.modifier): source/blender/blenkernel/intern/modifier.cc:425 BKE_modifier_set_error: Object: "GEO-flag.002", Modifier: "MeshSequenceCache", Could not create reader for file //290skydemo2_flags.abc
I0921 10:21:50.108639 2747615 device.cpp:39] HIPEW initialization succeeded
I0921 10:21:50.112017 2747615 device.cpp:45] Found HIPCC hipcc
I0921 10:21:50.209548 2747615 device.cpp:207] Device has compute preemption or is not used for display.
I0921 10:21:50.209569 2747615 device.cpp:211] Added device "AMD Instinct MI210" with id "HIP_AMD Instinct MI210_0000:a3:00".
I0921 10:21:50.209661 2747615 device.cpp:568] Mapped host memory limit set to 1,077,577,404,416 bytes. (1003.57G)
I0921 10:21:50.209944 2747615 device_impl.cpp:63] Using AVX2 CPU kernels.
Fra:48 Mem:523.99M (Peak 524.70M) | Time:00:00.51 | Mem:0.00M, Peak:0.00M | Scene, View Layer | Synchronizing object | GEO-Eyepiece_rim
Fra:48 Mem:524.00M (Peak 524.70M) | Time:00:00.51 | Mem:0.00M, Peak:0.00M | Scene, View Layer | Synchronizing object | GEO-Curve_Cables.004
Fra:48 Mem:531.76M (Peak 531.76M) | Time:00:00.51 | Mem:0.00M, Peak:0.00M | Scene, View Layer | Synchronizing object | GEO-Curve_Connectors
Fra:48 Mem:531.90M (Peak 531.90M) | Time:00:00.51 | Mem:0.00M, Peak:0.00M | Scene, View Layer | Synchronizing object | GEO-Curve_Connectors.009
Fra:48 Mem:531.86M (Peak 531.90M) | Time:00:00.51 | Mem:0.00M, Peak:0.00M | Scene, View Layer | Synchronizing object | GEO-Curve_Connectors.012
Fra:48 Mem:532.36M (Peak 532.36M) | Time:00:00.51 | Mem:0.00M, Peak:0.00M | Scene, View Layer | Synchronizing object | Cylinder.029
Fra:48 Mem:532.41M (Peak 532.43M) | Time:00:00.51 | Mem:0.00M, Peak:0.00M | Scene, View Layer | Synchronizing object | GEO-Eyepiece_Insides.001
Fra:48 Mem:533.56M (Peak 533.69M) | Time:00:00.51 | Mem:0.00M, Peak:0.00M | Scene, View Layer | Synchronizing object | GEO-Head_greeble
Fra:48 Mem:534.13M (Peak 534.13M) | Time:00:00.51 | Mem:0.00M, Peak:0.00M | Scene, View Layer | Synchronizing object | GEO-Head_greeble.008
Step 12 (Testing HIP test-suite) failure: Testing HIP test-suite (failure)
...
exec_time: 0.0968 
hash: "" 
********************

Testing Time: 0.59s

Total Discovered Tests: 5
  Passed: 5 (100.00%)
[17/18] cd /home/botworker/bbot/hip-blender/botworker/amdgpu-hip-blender/test-suite-build/External/HIP && /opt/python/cp312-cp312/bin/python3.12 /home/botworker/bbot/hip-blender/botworker/amdgpu-hip-blender/llvm/bin/llvm-lit -v blender.test
-- Testing: 1 tests, 1 workers --
FAIL: test-suite :: External/HIP/blender.test (1 of 1)
******************** TEST 'test-suite :: External/HIP/blender.test' FAILED ********************

/home/botworker/bbot/hip-blender/botworker/amdgpu-hip-blender/test-suite-build/tools/timeit-target --timeout 7200 --limit-core 0 --limit-cpu 7200 --limit-file-size 209715200 --limit-rss-size 838860800 --append-exitstatus --redirect-output /home/botworker/bbot/hip-blender/botworker/amdgpu-hip-blender/test-suite-build/External/HIP/Output/blender.test.out --redirect-input /dev/null --summary /home/botworker/bbot/hip-blender/botworker/amdgpu-hip-blender/test-suite-build/External/HIP/Output/blender.test.time /bin/bash test_blender.sh
/bin/bash verify_blender.sh /home/botworker/bbot/hip-blender/botworker/amdgpu-hip-blender/test-suite-build/External/HIP/Output/blender.test.out
Begin Blender test.
TEST_SUITE_HIP_ROOT=/opt/botworker/llvm/External/hip
Render /opt/botworker/llvm/External/hip/Blender_Scenes/290skydemo_release.blend
Blender 4.1.1 (hash e1743a0317bc built 2024-04-15 23:47:45)
Read blend: "/opt/botworker/llvm/External/hip/Blender_Scenes/290skydemo_release.blend"
Could not open as Ogawa file from provided streams.
Unable to open /opt/botworker/llvm/External/hip/Blender_Scenes/290skydemo2_flags.abc
WARN (bke.modifier): source/blender/blenkernel/intern/modifier.cc:425 BKE_modifier_set_error: Object: "GEO-flag.002", Modifier: "MeshSequenceCache", Could not create reader for file //290skydemo2_flags.abc
WARN (bke.modifier): source/blender/blenkernel/intern/modifier.cc:425 BKE_modifier_set_error: Object: "GEO-flag.003", Modifier: "MeshSequenceCache", Could not create reader for file //290skydemo2_flags.abc
WARN (bke.modifier): source/blender/blenkernel/intern/modifier.cc:425 BKE_modifier_set_error: Object: "GEO-flag", Modifier: "MeshSequenceCache", Could not create reader for file //290skydemo2_flags.abc
WARN (bke.modifier): source/blender/blenkernel/intern/modifier.cc:425 BKE_modifier_set_error: Object: "GEO-flag.004", Modifier: "MeshSequenceCache", Could not create reader for file //290skydemo2_flags.abc
WARN (bke.modifier): source/blender/blenkernel/intern/modifier.cc:425 BKE_modifier_set_error: Object: "GEO-flag.001", Modifier: "MeshSequenceCache", Could not create reader for file //290skydemo2_flags.abc
Could not open as Ogawa file from provided streams.
Unable to open /opt/botworker/llvm/External/hip/Blender_Scenes/290skydemo2_flags.abc
WARN (bke.modifier): source/blender/blenkernel/intern/modifier.cc:425 BKE_modifier_set_error: Object: "GEO-flag.004", Modifier: "MeshSequenceCache", Could not create reader for file //290skydemo2_flags.abc
WARN (bke.modifier): source/blender/blenkernel/intern/modifier.cc:425 BKE_modifier_set_error: Object: "GEO-flag.003", Modifier: "MeshSequenceCache", Could not create reader for file //290skydemo2_flags.abc
WARN (bke.modifier): source/blender/blenkernel/intern/modifier.cc:425 BKE_modifier_set_error: Object: "GEO-flag", Modifier: "MeshSequenceCache", Could not create reader for file //290skydemo2_flags.abc
WARN (bke.modifier): source/blender/blenkernel/intern/modifier.cc:425 BKE_modifier_set_error: Object: "GEO-flag.001", Modifier: "MeshSequenceCache", Could not create reader for file //290skydemo2_flags.abc
WARN (bke.modifier): source/blender/blenkernel/intern/modifier.cc:425 BKE_modifier_set_error: Object: "GEO-flag.002", Modifier: "MeshSequenceCache", Could not create reader for file //290skydemo2_flags.abc
I0921 10:21:50.108639 2747615 device.cpp:39] HIPEW initialization succeeded
I0921 10:21:50.112017 2747615 device.cpp:45] Found HIPCC hipcc
I0921 10:21:50.209548 2747615 device.cpp:207] Device has compute preemption or is not used for display.
I0921 10:21:50.209569 2747615 device.cpp:211] Added device "AMD Instinct MI210" with id "HIP_AMD Instinct MI210_0000:a3:00".
I0921 10:21:50.209661 2747615 device.cpp:568] Mapped host memory limit set to 1,077,577,404,416 bytes. (1003.57G)
I0921 10:21:50.209944 2747615 device_impl.cpp:63] Using AVX2 CPU kernels.
Fra:48 Mem:523.99M (Peak 524.70M) | Time:00:00.51 | Mem:0.00M, Peak:0.00M | Scene, View Layer | Synchronizing object | GEO-Eyepiece_rim
Fra:48 Mem:524.00M (Peak 524.70M) | Time:00:00.51 | Mem:0.00M, Peak:0.00M | Scene, View Layer | Synchronizing object | GEO-Curve_Cables.004
Fra:48 Mem:531.76M (Peak 531.76M) | Time:00:00.51 | Mem:0.00M, Peak:0.00M | Scene, View Layer | Synchronizing object | GEO-Curve_Connectors
Fra:48 Mem:531.90M (Peak 531.90M) | Time:00:00.51 | Mem:0.00M, Peak:0.00M | Scene, View Layer | Synchronizing object | GEO-Curve_Connectors.009
Fra:48 Mem:531.86M (Peak 531.90M) | Time:00:00.51 | Mem:0.00M, Peak:0.00M | Scene, View Layer | Synchronizing object | GEO-Curve_Connectors.012
Fra:48 Mem:532.36M (Peak 532.36M) | Time:00:00.51 | Mem:0.00M, Peak:0.00M | Scene, View Layer | Synchronizing object | Cylinder.029
Fra:48 Mem:532.41M (Peak 532.43M) | Time:00:00.51 | Mem:0.00M, Peak:0.00M | Scene, View Layer | Synchronizing object | GEO-Eyepiece_Insides.001
Fra:48 Mem:533.56M (Peak 533.69M) | Time:00:00.51 | Mem:0.00M, Peak:0.00M | Scene, View Layer | Synchronizing object | GEO-Head_greeble
Fra:48 Mem:534.13M (Peak 534.13M) | Time:00:00.51 | Mem:0.00M, Peak:0.00M | Scene, View Layer | Synchronizing object | GEO-Head_greeble.008

```

</details>

https://github.com/llvm/llvm-project/pull/224971