[llvm] [NVVM][NVPTX] Add support for tcgen05.mma (PR #151949)

LLVM Continuous Integration via llvm-commits llvm-commits at lists.llvm.org
Tue Sep 23 19:05:51 PDT 2025


llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-nvptx-nvidia-ubuntu` running on `as-builder-7` while building `llvm` at step 6 "test-build-unified-tree-check-llvm".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/180/builds/25574

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

```
Step 6 (test-build-unified-tree-check-llvm) failure: test (failure)
******************** TEST 'LLVM :: CodeGen/NVPTX/tcgen05-mma-block-scale-ptx88.ll' FAILED ********************
Exit Code: 255

Command Output (stdout):
--
# RUN: at line 2
/home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/build/bin/llc < /home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/test/CodeGen/NVPTX/tcgen05-mma-block-scale-ptx88.ll -o - -mcpu=sm_100a -march=nvptx64 -mattr=+ptx88 | /home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/build/bin/FileCheck /home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/test/CodeGen/NVPTX/tcgen05-mma-block-scale-ptx88.ll
# executed command: /home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/build/bin/llc -o - -mcpu=sm_100a -march=nvptx64 -mattr=+ptx88
# executed command: /home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/build/bin/FileCheck /home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/test/CodeGen/NVPTX/tcgen05-mma-block-scale-ptx88.ll
# RUN: at line 3
/home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/build/bin/llc < /home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/test/CodeGen/NVPTX/tcgen05-mma-block-scale-ptx88.ll -o - -mcpu=sm_101a -march=nvptx64 -mattr=+ptx88 | /home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/build/bin/FileCheck /home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/test/CodeGen/NVPTX/tcgen05-mma-block-scale-ptx88.ll
# executed command: /home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/build/bin/llc -o - -mcpu=sm_101a -march=nvptx64 -mattr=+ptx88
# executed command: /home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/build/bin/FileCheck /home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/test/CodeGen/NVPTX/tcgen05-mma-block-scale-ptx88.ll
# RUN: at line 4
/home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/build/bin/llc < /home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/test/CodeGen/NVPTX/tcgen05-mma-block-scale-ptx88.ll -o - -mcpu=sm_110a -march=nvptx64 -mattr=+ptx90 | /home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/build/bin/FileCheck /home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/test/CodeGen/NVPTX/tcgen05-mma-block-scale-ptx88.ll
# executed command: /home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/build/bin/llc -o - -mcpu=sm_110a -march=nvptx64 -mattr=+ptx90
# executed command: /home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/build/bin/FileCheck /home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/test/CodeGen/NVPTX/tcgen05-mma-block-scale-ptx88.ll
# RUN: at line 5
/home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/build/bin/llc < /home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/test/CodeGen/NVPTX/tcgen05-mma-block-scale-ptx88.ll -march=nvptx64 -mattr=+ptx88 -mcpu=sm_100a | /usr/local/cuda/bin/ptxas -c - -arch=sm_100a
# executed command: /home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/build/bin/llc -march=nvptx64 -mattr=+ptx88 -mcpu=sm_100a
# executed command: /usr/local/cuda/bin/ptxas -c - -arch=sm_100a
# .---command stderr------------
# | ptxas /home/buildbot/worker/as-builder-7/llvm-nvptx-nvidia-ubuntu/build/lit-tmp-976xfdex/tmpxft_000cf307_00000000-0_stdin, line 5; fatal   : Unsupported .version 8.8; current version is '8.7'
# | ptxas fatal   : Ptx assembly aborted due to errors
# `-----------------------------
# error: command failed with exit status: 255

--

********************


```

</details>

https://github.com/llvm/llvm-project/pull/151949


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