[llvm] [DirectX] Teach DXILResourceAccess about cbuffers (PR #164554)

[Helena Kotas via llvm-commits]

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@@ -0,0 +1,109 @@
+; RUN: opt -S -dxil-resource-access -mtriple=dxil %s | FileCheck %s
+
+; cbuffer CB {
+;   float3 a1;     // offset   0, size 12 (+4)
+;   double3 a2;    // offset  16, size 24
+;   float16_t2 a3; // offset  40, size  4 (+4)
+;   uint64_t3 a4;  // offset  48, size 24 (+8)
+;   int4 a5;       // offset  80, size 16
+;   uint16_t3 a6;  // offset  96, size  6 (+10)
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hekota wrote:

```suggestion
;   uint16_t3 a6;  // offset  96, size  6
```

https://github.com/llvm/llvm-project/pull/164554