[llvm] [AMDGPU] Remove s_cbranch_cdbg* for GFX12 (PR #75496)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-mc

Author: Jay Foad (jayfoad)

<details>
<summary>Changes</summary>

No GFX12 encoding was added for these, so this patch just adds tests
that they are not recognized by the assembler.


---
Full diff: https://github.com/llvm/llvm-project/pull/75496.diff


1 Files Affected:

- (modified) llvm/test/MC/AMDGPU/gfx12_unsupported.s (+12) 


``````````diff
diff --git a/llvm/test/MC/AMDGPU/gfx12_unsupported.s b/llvm/test/MC/AMDGPU/gfx12_unsupported.s
index e835710a69fe85..4f6758b6f6786d 100644
--- a/llvm/test/MC/AMDGPU/gfx12_unsupported.s
+++ b/llvm/test/MC/AMDGPU/gfx12_unsupported.s
@@ -10,6 +10,18 @@ s_subvector_loop_begin s0, 0x1234
 s_subvector_loop_end s0, 0x1234
 // CHECK: :[[@LINE-1]]:{{[0-9]+}}: error: instruction not supported on this GPU
 
+s_cbranch_cdbgsys 0
+// CHECK: :[[@LINE-1]]:{{[0-9]+}}: error: instruction not supported on this GPU
+
+s_cbranch_cdbguser 0
+// CHECK: :[[@LINE-1]]:{{[0-9]+}}: error: instruction not supported on this GPU
+
+s_cbranch_cdbgsys_or_user 0
+// CHECK: :[[@LINE-1]]:{{[0-9]+}}: error: instruction not supported on this GPU
+
+s_cbranch_cdbgsys_and_user 0
+// CHECK: :[[@LINE-1]]:{{[0-9]+}}: error: instruction not supported on this GPU
+
 ds_cmpstore_f32 v0, v1, v2
 // CHECK: :[[@LINE-1]]:{{[0-9]+}}: error: instruction not supported on this GPU
 

``````````

</details>


https://github.com/llvm/llvm-project/pull/75496