[llvm] [AMDGPU][AsmParser] Allow `v_writelane_b32` to use SGPR and M0 as source operands at the same time (PR #78827)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,14 @@
+// RUN: llvm-mc --triple=amdgcn --mcpu=gfx904 -show-encoding %s | FileCheck %s -check-prefix=GFX9
+// RUN: llvm-mc --triple=amdgcn --mcpu=gfx940 -show-encoding %s | FileCheck %s -check-prefix=GFX9
+// RUN: llvm-mc --triple=amdgcn --mcpu=gfx1010 -show-encoding %s | FileCheck %s -check-prefix=GFX10
+// RUN: llvm-mc --triple=amdgcn --mcpu=gfx1030 -show-encoding %s | FileCheck %s -check-prefix=GFX10
+// RUN: llvm-mc --triple=amdgcn --mcpu=gfx1100 -show-encoding %s | FileCheck %s -check-prefix=GFX11
+// RUN: llvm-mc --triple=amdgcn --mcpu=gfx1200 -show-encoding %s | FileCheck %s -check-prefix=GFX12
+
+.text
+  v_writelane_b32 v1, s13, m0
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arsenm wrote:

can you also add a machine verifier test with the MIR equivalents on different targets?

https://github.com/llvm/llvm-project/pull/78827