[Mlir-commits] [mlir] [mlir][spirv] Deserialize OpConstantComposite of type Cooperative Matrix (PR #142786)

[Igor Wodiany]

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@@ -277,4 +277,11 @@ spirv.module Logical GLSL450 requires #spirv.vce<v1.0, [Shader], []> {
     %signed_minus_one = spirv.Constant -1 : si16
     spirv.ReturnValue %signed_minus_one : si16
   }
+
+  // CHECK-LABEL: @coop_matrix_const
+  spirv.func @coop_matrix_const() -> (!spirv.coopmatrix<16x16xf32, Subgroup, MatrixAcc>) "None" {
+    // CHECK: {{%.*}} = spirv.Constant dense<0.000000e+00> : !spirv.coopmatrix<16x16xf32, Subgroup, MatrixAcc>
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IgWod-IMG wrote:

Good point, I've added a non-zero test.

> Also, are non-splats supported?

I don't think so. I think this is the only part of spec that is relevant: [3.42.7 Constant-Creation Instructions](https://github.com/KhronosGroup/SPIRV-Registry/blob/main/extensions/KHR/SPV_KHR_cooperative_matrix.asciidoc#3427-constant-creation-instructions) and it only talks about creating a constant matrix from a single constituent.

https://github.com/llvm/llvm-project/pull/142786