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[LLVM] Add __builtin_readsteadycounter intrinsic and builtin for realtime clocks #81331

Merged
merged 1 commit into from
Feb 13, 2024
Merged

[LLVM] Add __builtin_readsteadycounter intrinsic and builtin for realtime clocks #81331

merged 1 commit into from
Feb 13, 2024

Commits on Feb 13, 2024

  1. [LLVM] Add __builtin_readsteadycounter intrinsic and buiiltin 

    Summary:
This patch adds a new intrinsic and builtin function mirroring the
existing `__builtin_readcyclecounter`. The difference is that this
implementation targets a separate counter that some targets have which
returns a fixed frequency clock that can be used to determine elapsed
time, this is different compared to the cycle counter which often has
variable frequency. This is currently only valid for the NVPTX and
AMDGPU targets.
    @jhuber6
    jhuber6 committed Feb 13, 2024
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