Test access and store operations for cooperative matrix (#2117)

For now, the reverse translation is not resolved properly, so we test
only forward translation here.

Original commit:
KhronosGroup/SPIRV-LLVM-Translator@1677289

Author: vmaksimo

llvm-spirv/test/extensions/KHR/SPV_KHR_cooperative_matrix/access_store.ll

@@ -0,0 +1,56 @@
+; RUN: llvm-as < %s -o %t.bc
+; RUN: llvm-spirv %t.bc --spirv-ext=+SPV_KHR_cooperative_matrix -o %t.spv
+; RUN: llvm-spirv %t.spv -to-text -o %t.spt
+; RUN: FileCheck < %t.spt %s --check-prefix=CHECK-SPIRV
+
+; TODO: come up with an approach and implement reverse translation
+; R/UN: llvm-spirv -r %t.spv -o %t.rev.bc
+; R/UN: llvm-dis < %t.rev.bc | FileCheck %s --check-prefix=CHECK-LLVM
+
+; CHECK-SPIRV: TypeInt [[#TypeInt:]] 32 0
+; CHECK-SPIRV-DAG: Constant [[#TypeInt]] [[#Const0:]] 0
+; CHECK-SPIRV-DAG: Constant [[#TypeInt]] [[#Const1:]] 1 {{$}}
+; CHECK-SPIRV-DAG: Constant [[#TypeInt]] [[#Const3:]] 3
+; CHECK-SPIRV-DAG: Constant [[#TypeInt]] [[#Const12:]] 12
+; CHECK-SPIRV-DAG: Constant [[#TypeInt]] [[#Const42:]] 42
+
+; CHECK-SPIRV: TypeCooperativeMatrixKHR [[#TypeMatrix:]] [[#TypeInt]] [[#Const3]] [[#Const12]] [[#Const12]] [[#Const0]]
+; CHECK-SPIRV: TypePointer [[#Type:]] 7 [[#TypeInt]]
+
+; CHECK-SPIRV: CompositeConstruct [[#TypeMatrix]] [[#Composite:]] [[#Const0]]
+; CHECK-SPIRV: AccessChain [[#Type]] [[#Res:]] [[#Composite]] [[#Const1]]
+; CHECK-SPIRV: Store [[#Res]] [[#Const42]]
+
+
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "spir64-unknown-unknown"
+
+; Function Attrs: mustprogress uwtable
+define dso_local void @_Z3fooi(i32 noundef %idx) local_unnamed_addr #0 {
+entry:
+  %Obj = tail call spir_func noundef target("spirv.CooperativeMatrixKHR", i32, 3, 12, 12, 0) @_Z26__spirv_CompositeConstruct(i32 noundef 0) #4
+  %call = call noundef ptr @_Z19__spirv_AccessChainP6Matrixii(target("spirv.CooperativeMatrixKHR", i32, 3, 12, 12, 0) %Obj, i32 noundef 1)
+  call void @_Z13__spirv_StorePii(ptr noundef %call, i32 noundef 42)
+  ret void
+}
+
+declare dso_local spir_func noundef target("spirv.CooperativeMatrixKHR", i32, 3, 12, 12, 0) @_Z26__spirv_CompositeConstruct(i32 noundef) local_unnamed_addr #2
+
+declare noundef ptr @_Z19__spirv_AccessChainP6Matrixii(target("spirv.CooperativeMatrixKHR", i32, 3, 12, 12, 0) noundef, i32 noundef) local_unnamed_addr #2
+
+declare void @_Z13__spirv_StorePii(ptr noundef, i32 noundef) local_unnamed_addr #2
+
+attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
+attributes #2 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #3 = { nounwind }
+
+!llvm.module.flags = !{!0, !1, !2, !3, !4}
+!llvm.ident = !{!5}
+
+!0 = !{i32 7, !"Dwarf Version", i32 4}
+!1 = !{i32 1, !"wchar_size", i32 4}
+!2 = !{i32 8, !"PIC Level", i32 2}
+!3 = !{i32 7, !"PIE Level", i32 2}
+!4 = !{i32 7, !"uwtable", i32 2}
+!5 = !{!"clang version 16.0.0 (https://github.com/llvm/llvm-project.git 08d094a0e457360ad8b94b017d2dc277e697ca76)"}