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Revert "[LLVM] Update to llvm/llvm-project@1f20eee6dc36" #5341

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merged 1 commit into from
Dec 4, 2024

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Reverts #5308

This is causing functional regressions in some internal tests

@ThomasRaoux ThomasRaoux requested a review from ptillet as a code owner December 4, 2024 22:16
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cc: @antiagainst

@ThomasRaoux ThomasRaoux merged commit 7f2c56a into main Dec 4, 2024
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@ThomasRaoux ThomasRaoux deleted the revert-5308-llvm-update-950 branch December 4, 2024 22:16
antiagainst pushed a commit that referenced this pull request Dec 10, 2024
This relands #5392
to enable new arch target since backend support has been
added--it doesn't depend on the reverted LLVM upgrade in
#5341; basic
necessary enablement is already included in the current llvm
version we're using.
jataylo pushed a commit to jataylo/triton that referenced this pull request Dec 11, 2024
…#5341)

Reverts triton-lang#5308

This is causing functional regressions in some internal tests

(cherry picked from commit 7f2c56a)
jataylo pushed a commit to jataylo/triton that referenced this pull request Dec 11, 2024
This relands triton-lang#5392
to enable new arch target since backend support has been
added--it doesn't depend on the reverted LLVM upgrade in
triton-lang#5341; basic
necessary enablement is already included in the current llvm
version we're using.

(cherry picked from commit f257479)
jataylo pushed a commit to jataylo/triton that referenced this pull request Dec 12, 2024
This relands triton-lang#5392
to enable new arch target since backend support has been
added--it doesn't depend on the reverted LLVM upgrade in
triton-lang#5341; basic
necessary enablement is already included in the current llvm
version we're using.

(cherry picked from commit f257479)
antiagainst pushed a commit that referenced this pull request Jan 13, 2025
I have "bisected" the current CUDA regression (mentioned
[here](#5341)) on A100:

```
git bisect start
# bad: [f5a35a31bfe6cbc16bec0c130f2bb3632dbf1fbf] [LV] Add test cases with incorrect IV live-outs.
git bisect bad f5a35a31bfe6cbc16bec0c130f2bb3632dbf1fbf
# good: [86b69c31642e98f8357df62c09d118ad1da4e16a] [SPIR-V] Fix SPIR-V extension SPV_INTEL_function_pointers: 
...
# first bad commit: [b8703369daf777706196ff914c0376c27adde3cf] [SLP] Match poison as instruction with the same opcode
```

The failure presents as :

```
Traceback (most recent call last):
  File "/home/mleventa/dev_projects/repro/repro.py", line 135, in <module>
    torch.cuda.synchronize()
  File "/home/mleventa/dev_projects/.venv/lib/python3.10/site-packages/torch/cuda/__init__.py", line 987, in synchronize
    return torch._C._cuda_synchronize()
RuntimeError: CUDA error: an illegal memory access was encountered
```

The failing commit is
[`b870336`](llvm/llvm-project#115946) and the
last working commit is `2fe947b4`. It's not clear to me the relationship
but will investigate.

This PR to `llvm-head` is to verify that my repro on A100 matches the
internal regression/fail.
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