[ARM] Simplify code. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235803 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp b/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp
index c2e1b2a3045c5e42eaf3150ca4509a3c1742a0e8..1c5a795187674a5913d84bfb2c9d7311189bc0f5 100644 (file)
--- a/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp
+++ b/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp
@@ -1379,21 +1379,8 @@ void ARMInstPrinter::printRotImmOperand(const MCInst *MI, unsigned OpNum,
   unsigned Imm = MI->getOperand(OpNum).getImm();
   if (Imm == 0)
     return;
-  O << ", ror " << markup("<imm:") << "#";
-  switch (Imm) {
-  default:
-    assert(0 && "illegal ror immediate!");
-  case 1:
-    O << "8";
-    break;
-  case 2:
-    O << "16";
-    break;
-  case 3:
-    O << "24";
-    break;
-  }
-  O << markup(">");
+  assert(Imm <= 3 && "illegal ror immediate!");
+  O << ", ror " << markup("<imm:") << "#" << 8 * Imm << markup(">");
 }
 
 void ARMInstPrinter::printModImmOperand(const MCInst *MI, unsigned OpNum,