[llvm] [AMDGPU][MC] Implement fft and rotate modes for ds_swizzle_b32 (PR #108064)

[Matt Arsenault via llvm-commits]

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@@ -1556,6 +1556,13 @@ void AMDGPUInstPrinter::printSwizzle(const MCInst *MI, unsigned OpNo,
         O << ")";
       }
     }
+  } else if ((Imm & FFT_ROTATE_MODE_MASK) == FFT_MODE_ENC) {
+    O << "swizzle(" << IdSymbolic[ID_FFT] << ","
+      << (Imm & FFT_SWIZZLE_TYPE_MASK) << ")";
+  } else if ((Imm & FFT_ROTATE_MODE_MASK) == ROTATE_MODE_ENC) {
+    O << "swizzle(" << IdSymbolic[ID_ROTATE] << ","
+      << ((Imm >> ROTATE_DIR_SHIFT) & ROTATE_DIR_MASK) << ","
+      << ((Imm >> ROTATE_SIZE_SHIFT) & ROTATE_SIZE_MASK) << ")";
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arsenm wrote:

Single quotes around single characters 

https://github.com/llvm/llvm-project/pull/108064