ARM mode aliases for bitwise instructions w/ register operands.
rdar://9704684
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144803 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
index 64c913f..6becc23 100644
--- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
+++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
@@ -4613,6 +4613,32 @@
const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
switch (Inst.getOpcode()) {
// Handle the MOV complex aliases.
+ case ARM::ASRr:
+ case ARM::LSRr:
+ case ARM::LSLr:
+ case ARM::RORr: {
+ ARM_AM::ShiftOpc ShiftTy;
+ switch(Inst.getOpcode()) {
+ default: llvm_unreachable("unexpected opcode!");
+ case ARM::ASRr: ShiftTy = ARM_AM::asr; break;
+ case ARM::LSRr: ShiftTy = ARM_AM::lsr; break;
+ case ARM::LSLr: ShiftTy = ARM_AM::lsl; break;
+ case ARM::RORr: ShiftTy = ARM_AM::ror; break;
+ }
+ // A shift by zero is a plain MOVr, not a MOVsi.
+ unsigned Shifter = ARM_AM::getSORegOpc(ShiftTy, 0);
+ MCInst TmpInst;
+ TmpInst.setOpcode(ARM::MOVsr);
+ TmpInst.addOperand(Inst.getOperand(0)); // Rd
+ TmpInst.addOperand(Inst.getOperand(1)); // Rn
+ TmpInst.addOperand(Inst.getOperand(2)); // Rm
+ TmpInst.addOperand(MCOperand::CreateImm(Shifter)); // Shift value and ty
+ TmpInst.addOperand(Inst.getOperand(3)); // CondCode
+ TmpInst.addOperand(Inst.getOperand(4));
+ TmpInst.addOperand(Inst.getOperand(5)); // cc_out
+ Inst = TmpInst;
+ return true;
+ }
case ARM::ASRi:
case ARM::LSRi:
case ARM::LSLi: