}
// A8.6.18 BFI - Bitfield insert (Encoding A1)
-def BFI : I<(outs GPR:$Rd), (ins GPR:$src, GPR:$Rn, bf_inv_mask_imm:$imm),
+def BFI : I<(outs GPRnopc:$Rd), (ins GPRnopc:$src, GPR:$Rn, bf_inv_mask_imm:$imm),
AddrMode1, 4, IndexModeNone, DPFrm, IIC_iUNAsi,
"bfi", "\t$Rd, $Rn, $imm", "$src = $Rd",
- [(set GPR:$Rd, (ARMbfi GPR:$src, GPR:$Rn,
+ [(set GPRnopc:$Rd, (ARMbfi GPRnopc:$src, GPR:$Rn,
bf_inv_mask_imm:$imm))]>,
Requires<[IsARM, HasV6T2]> {
bits<4> Rd;
// GNU as only supports this form of bfi (w/ 4 arguments)
let isAsmParserOnly = 1 in
-def BFI4p : I<(outs GPR:$Rd), (ins GPR:$src, GPR:$Rn,
+def BFI4p : I<(outs GPRnopc:$Rd), (ins GPRnopc:$src, GPR:$Rn,
lsb_pos_imm:$lsb, width_imm:$width),
AddrMode1, 4, IndexModeNone, DPFrm, IIC_iUNAsi,
"bfi", "\t$Rd, $Rn, $lsb, $width", "$src = $Rd",
}];
}
+// GPRs without the PC. Some ARM instructions do not allow the PC in
+// certain operand slots, particularly as the destination. Primarily
+// useful for disassembly.
+def GPRnopc : RegisterClass<"ARM", [i32], 32, (sub GPR, PC)> {
+ let AltOrders = [(add LR, GPRnopc), (trunc GPRnopc, 8)];
+ let AltOrderSelect = [{
+ return 1 + MF.getTarget().getSubtarget<ARMSubtarget>().isThumb1Only();
+ }];
+}
+
// restricted GPR register class. Many Thumb2 instructions allow the full
// register range for operands, but have undefined behaviours when PC
// or SP (R13 or R15) are used. The ARM ISA refers to these operands
// Definitions are further down.
static bool DecodeGPRRegisterClass(llvm::MCInst &Inst, unsigned RegNo,
uint64_t Address, const void *Decoder);
+static bool DecodeGPRnopcRegisterClass(llvm::MCInst &Inst, unsigned RegNo,
+ uint64_t Address, const void *Decoder);
static bool DecodetGPRRegisterClass(llvm::MCInst &Inst, unsigned RegNo,
uint64_t Address, const void *Decoder);
static bool DecodetcGPRRegisterClass(llvm::MCInst &Inst, unsigned RegNo,
return true;
}
+static bool DecodeGPRnopcRegisterClass(llvm::MCInst &Inst, unsigned RegNo,
+ uint64_t Address, const void *Decoder) {
+ if (RegNo == 15) return false;
+ return DecodeGPRRegisterClass(Inst, RegNo, Address, Decoder);
+}
+
static bool DecodetGPRRegisterClass(llvm::MCInst &Inst, unsigned RegNo,
uint64_t Address, const void *Decoder) {
if (RegNo > 7)
# RUN: llvm-mc --disassemble %s -triple=arm-apple-darwin9 |& grep {invalid instruction encoding}
-# XFAIL: *
# Opcode=60 Name=BFI Format=ARM_FORMAT_DPFRM(4)
# 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
const std::string &name) {
REG("GPR");
REG("rGPR");
+ REG("GPRnopc");
REG("tcGPR");
REG("cc_out");
REG("s_cc_out");