[llvm] [AMDGPU][MC] Disallow null as saddr in flat instructions (PR #101730)

[Jun Wang via llvm-commits]

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@@ -212,8 +212,8 @@ global_store_dword v3, v1, s[2:3] offset:-8
 
 // XXX: Is this valid?
 global_store_dword v3, v1, exec
-// GFX10: encoding: [0x00,0x80,0x70,0xdc,0x03,0x01,0x7e,0x00]
-// GFX9: global_store_dword v3, v1, exec ; encoding: [0x00,0x80,0x70,0xdc,0x03,0x01,0x7e,0x00]
+// GFX10-ERR: :[[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
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jwanggit86 wrote:

Will do.

https://github.com/llvm/llvm-project/pull/101730