[llvm-branch-commits] [llvm] [AMDGPU] Add support for sub-dword types for address space 13 (PR #213223)

[Tim Gymnich via llvm-branch-commits]

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@@ -1813,6 +1831,13 @@ AMDGPULegalizerInfo::AMDGPULegalizerInfo(const GCNSubtarget &ST_,
                                      {S16, ConstantPtr, S8, GlobalAlign8}})
           .legalIf([=](const LegalityQuery &Query) -> bool {
             return isLoadStoreLegal(ST, Query);
+          })
+          // VGPR ("as memory") extending loads are custom-lowered to
+          // G_AMDGPU_REG_LOAD_BITS. Always take the custom path so an
+          // unsupported access is diagnosed cleanly rather than failing to
+          // legalize.
+          .customIf([=](const LegalityQuery &Query) -> bool {
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tgymnich wrote:

```suggestion
          .customIf([](const LegalityQuery &Query) -> bool {
```

https://github.com/llvm/llvm-project/pull/213223