[llvm] [AMDGPU][True16][MC] add true16 and fake16 test file for vop3 instructions (PR #109695)

[Joe Nash via llvm-commits]

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@@ -0,0 +1,5764 @@
+// RUN: not llvm-mc -triple=amdgcn -mcpu=gfx1200 -mattr=+wavefrontsize32,-real-true16 -show-encoding %s | FileCheck --check-prefixes=GFX12,W32 %s
+// RUN: not llvm-mc -triple=amdgcn -mcpu=gfx1200 -mattr=+wavefrontsize64,-real-true16 -show-encoding %s | FileCheck --check-prefixes=GFX12,W64 %s
+// RUN: not llvm-mc -triple=amdgcn -mcpu=gfx1200 -mattr=+wavefrontsize32,-real-true16 %s 2>&1 | FileCheck --check-prefixes=GFX12-ERR,W32-ERR --implicit-check-not=error: %s
+// RUN: not llvm-mc -triple=amdgcn -mcpu=gfx1200 -mattr=+wavefrontsize64,-real-true16 %s 2>&1 | FileCheck --check-prefixes=GFX12-ERR,W64-ERR --implicit-check-not=error: %s
+
+v_add3_u32_e64_dpp v5, v1, v2, v3 quad_perm:[3,2,1,0]
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Sisyph wrote:

I think it does provide some additional code coverage to test the non-16-bit instructions in both real16 and fake16 modes. We can fully test both paths. But it is a small amount of additional coverage.

https://github.com/llvm/llvm-project/pull/109695