Fixed MC encoding for index_align for VLD1/VST1 (single element from one lane) for size 32

llvm-svn: 131085

1 files changed, 26 insertions, 0 deletions

diff --git a/llvm/lib/Target/ARM/ARMMCCodeEmitter.cpp b/llvm/lib/Target/ARM/ARMMCCodeEmitter.cpp
index 10607b17c53..2b6d9fcfb33 100644
--- a/llvm/lib/Target/ARM/ARMMCCodeEmitter.cpp
+++ b/llvm/lib/Target/ARM/ARMMCCodeEmitter.cpp
@@ -273,6 +273,8 @@ public:
                                   SmallVectorImpl<MCFixup> &Fixups) const;
   unsigned getAddrMode6AddressOpValue(const MCInst &MI, unsigned Op,
                                       SmallVectorImpl<MCFixup> &Fixups) const;
+  unsigned getAddrMode6OneLane32AddressOpValue(const MCInst &MI, unsigned Op,
+                                        SmallVectorImpl<MCFixup> &Fixups) const;
   unsigned getAddrMode6DupAddressOpValue(const MCInst &MI, unsigned Op,
                                         SmallVectorImpl<MCFixup> &Fixups) const;
   unsigned getAddrMode6OffsetOpValue(const MCInst &MI, unsigned Op,
@@ -1178,6 +1180,30 @@ getAddrMode6AddressOpValue(const MCInst &MI, unsigned Op,
   return RegNo | (Align << 4);
 }
 
+/// getAddrMode6OneLane32AddressOpValue - Encode an addrmode6 register number
+/// along  with the alignment operand for use in VST1 and VLD1 with size 32.
+unsigned ARMMCCodeEmitter::
+getAddrMode6OneLane32AddressOpValue(const MCInst &MI, unsigned Op,
+                                    SmallVectorImpl<MCFixup> &Fixups) const {
+  const MCOperand &Reg = MI.getOperand(Op);
+  const MCOperand &Imm = MI.getOperand(Op + 1);
+
+  unsigned RegNo = getARMRegisterNumbering(Reg.getReg());
+  unsigned Align = 0;
+
+  switch (Imm.getImm()) {
+  default: break;
+  case 2:
+  case 4:
+  case 8:
+  case 16: Align = 0x00; break;
+  case 32: Align = 0x03; break;
+  }
+
+  return RegNo | (Align << 4);
+}
+
+
 /// getAddrMode6DupAddressOpValue - Encode an addrmode6 register number and
 /// alignment operand for use in VLD-dup instructions.  This is the same as
 /// getAddrMode6AddressOpValue except for the alignment encoding, which is