ggml-cpu : add check for ARM MATMUL_INT8/i8mm support#15922
Merged
ericcurtin merged 1 commit intoggml-org:masterfrom Sep 11, 2025
Merged
ggml-cpu : add check for ARM MATMUL_INT8/i8mm support#15922ericcurtin merged 1 commit intoggml-org:masterfrom
ericcurtin merged 1 commit intoggml-org:masterfrom
Conversation
This commit adds a check for GGML_MACHINE_SUPPORTS_i8mm when enabling MATMUL_INT8 features, ensuring that i8mm intrinsics are only used when the target hardware actually supports them. The motivation for this is to fix ggml CI build failures where the feature detection correctly identifies that i8mm is not supported, adding the +noi8mm flag, but MATMUL_INT8 preprocessor definitions are still enabled, causing the compiler to attempt to use vmmlaq_s32 intrinsics without i8mm support. Refs: https://github.com/ggml-org/ggml/actions/runs/17525174120/job/49909199499
github-actions
Bot
added
the
ggml
Member
Author
|
For some more details, this section contains some debugging information from the github runner machine. |
This was referenced Sep 11, 2025
ericcurtin
approved these changes
Sep 11, 2025
Member
|
@ericcurtin Do not merge PRs of other collaborators. We've updated the contributing guidelines recently to emphasize this: #15881 |
blime4
referenced
this pull request
in blime4/llama.cpp
Feb 5, 2026
This commit adds a check for GGML_MACHINE_SUPPORTS_i8mm when enabling MATMUL_INT8 features, ensuring that i8mm intrinsics are only used when the target hardware actually supports them. The motivation for this is to fix ggml CI build failures where the feature detection correctly identifies that i8mm is not supported, adding the +noi8mm flag, but MATMUL_INT8 preprocessor definitions are still enabled, causing the compiler to attempt to use vmmlaq_s32 intrinsics without i8mm support. Refs: https://github.com/ggml-org/ggml/actions/runs/17525174120/job/49909199499
Seunghhon
pushed a commit
to Seunghhon/llama.cpp
that referenced
this pull request
Apr 26, 2026
This commit adds a check for GGML_MACHINE_SUPPORTS_i8mm when enabling MATMUL_INT8 features, ensuring that i8mm intrinsics are only used when the target hardware actually supports them. The motivation for this is to fix ggml CI build failures where the feature detection correctly identifies that i8mm is not supported, adding the +noi8mm flag, but MATMUL_INT8 preprocessor definitions are still enabled, causing the compiler to attempt to use vmmlaq_s32 intrinsics without i8mm support. Refs: https://github.com/ggml-org/ggml/actions/runs/17525174120/job/49909199499
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
3 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
This commit adds a check for GGML_MACHINE_SUPPORTS_i8mm when enabling MATMUL_INT8 features, ensuring that i8mm intrinsics are only used when the target hardware actually supports them.
The motivation for this is to fix ggml CI build failures where the feature detection correctly identifies that i8mm is not supported, adding the +noi8mm flag, but MATMUL_INT8 preprocessor definitions are still enabled, causing the compiler to attempt to use vmmlaq_s32 intrinsics without i8mm support.
Refs: https://github.com/ggml-org/ggml/actions/runs/17525174120/job/49909199499