[Draft][GPU] Add LDS DMA alignment constraints to tiling heuristics#23357
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Yu-Zhewen wants to merge 1 commit intoiree-org:mainfrom
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[Draft][GPU] Add LDS DMA alignment constraints to tiling heuristics#23357Yu-Zhewen wants to merge 1 commit intoiree-org:mainfrom
Yu-Zhewen wants to merge 1 commit intoiree-org:mainfrom
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Yu-Zhewen
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Feb 2, 2026
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| /// Returns true if the target supports global load DMA (LDS DMA) operations. | ||
| /// Only CDNA4+ (gfx950 and newer) architectures support this feature. | ||
| /// Excludes RDNA cards (gfx10xx, gfx11xx, gfx12xx) which have major version | ||
| /// >= 10. | ||
| static bool targetSupportsGlobalLoadDMA(IREE::GPU::TargetAttr target) { | ||
| StringRef targetArch = target.getArch(); | ||
| auto maybeChipset = amdgpu::Chipset::parse(targetArch); | ||
| if (failed(maybeChipset)) { | ||
| return false; | ||
| } | ||
| // Only enable for CDNA4+ (gfx950+). Exclude RDNA cards (gfx10xx, gfx11xx, | ||
| // gfx12xx). CDNA cards have major version 9, RDNA cards have major version | ||
| // >= 10. | ||
| constexpr amdgpu::Chipset kGfx950{9, 5, 0}; | ||
| return maybeChipset->majorVersion == 9 && *maybeChipset >= kGfx950; | ||
| } | ||
|
|
Signed-off-by: Yu-Zhewen <zhewenyu@amd.com>
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