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[MLIR][AMDGPU] Fix bug in GatherToLDSOpLowering, get the correct MemRefType for destination (#142915)

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This PR fixes a bug in GatherToLDSOpLowering, we were getting the
MemRefType of source for the destination. Additionally, some related
typos are corrected.

CC: @krzysz00 @umangyadav @lialan
This commit is contained in:
Daniel Hernandez-Juarez
2025-06-13 18:33:51 +02:00
committed by GitHub
parent bd33eef7f1
commit 68b6f392ed
3 changed files with 14 additions and 12 deletions
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llvm/docs/AMDGPUUsage.rst
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@@ -1215,12 +1215,12 @@ The AMDGPU backend implements the following LLVM IR intrinsics.
denormalization mode, enabled traps, and floating point exceptions.
The format is a 64-bit concatenation of the MODE and TRAPSTS registers.
:ref:`llvm.set.fpenv<int_set_fpenv>` Sets the floating point environment to the specifies state.
:ref:`llvm.set.fpenv<int_set_fpenv>` Sets the floating point environment to the specified state.
llvm.amdgcn.load.to.lds.p<1/7> Loads values from global memory (either in the form of a global
a raw fat buffer pointer) to LDS. The size of the data copied can be 1, 2,
or 4 bytes (and gfx950 also allows 12 or 16 bytes). The LDS pointer
argument should be wavefront-uniform; the global pointer need not be.
The LDS pointer is implicitly offset by 4 * lane_id bytes for sies <= 4 bytes
The LDS pointer is implicitly offset by 4 * lane_id bytes for size <= 4 bytes
and 16 * lane_id bytes for larger sizes. This lowers to `global_load_lds`,
`buffer_load_* ... lds`, or `global_load__* ... lds` depending on address
space and architecture. `amdgcn.global.load.lds` has the same semantics as