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[HIP][AMDGPU] Do not perform Promote Alloca optimization for GPU kernels with dynamic LDS usage.
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Authored by kpyzhov on Jun 22 2020, 6:22 PM.



The "Promote Alloca" optimization tries to move some stack allocations to statically allocated LDS, so it adds new static LDS loads/stores to the kernel.
Mixed static/dynamic LDS is not correctly supported by the hip-clang yet, so adding static LDS load/stores to a kernel that already has dynamic LDS operations causes conflicts.
This patch disables Promote Alloca optimization for kernels that use dynamic LDS.

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kpyzhov created this revision.Jun 22 2020, 6:22 PM
Herald added a project: Restricted Project. · View Herald TranscriptJun 22 2020, 6:22 PM
arsenm requested changes to this revision.Jun 23 2020, 5:33 AM

Needs testcase


I think this needs more clarification, since this does handle dynamic LDS as OpenCL uses it through a kernel argument.

This revision now requires changes to proceed.Jun 23 2020, 5:33 AM

inverse ping