def Q14 : ARMReg<14, "q14", [D28, D29]>;
def Q15 : ARMReg<15, "q15", [D30, D31]>;
+// Pseudo 256-bit registers to represent pairs of Q registers. These should
+// never be present in the emitted code.
+def QQ0 : ARMReg<0, "qq0", [Q0, Q1]>;
+def QQ1 : ARMReg<1, "qq1", [Q2, Q3]>;
+def QQ2 : ARMReg<2, "qq2", [Q4, Q5]>;
+def QQ3 : ARMReg<3, "qq3", [Q6, Q7]>;
+def QQ4 : ARMReg<4, "qq4", [Q8, Q9]>;
+def QQ5 : ARMReg<5, "qq5", [Q10, Q11]>;
+def QQ6 : ARMReg<6, "qq6", [Q12, Q13]>;
+def QQ7 : ARMReg<7, "qq7", [Q14, Q15]>;
+
// Current Program Status Register.
def CPSR : ARMReg<0, "cpsr">;
// r10 == Stack Limit
//
def GPR : RegisterClass<"ARM", [i32], 32, [R0, R1, R2, R3, R4, R5, R6,
- R7, R8, R9, R10, R12, R11,
- LR, SP, PC]> {
+ R7, R8, R9, R10, R11, R12,
+ SP, LR, PC]> {
let MethodProtos = [{
iterator allocation_order_begin(const MachineFunction &MF) const;
iterator allocation_order_end(const MachineFunction &MF) const;
}];
- // FIXME: We are reserving r12 in case the PEI needs to use it to
- // generate large stack offset. Make it available once we have register
- // scavenging. Similarly r3 is reserved in Thumb mode for now.
let MethodBodies = [{
// FP is R11, R9 is available.
static const unsigned ARM_GPR_AO_1[] = {
ARM::R4, ARM::R5, ARM::R6,
ARM::R8, ARM::R9, ARM::R10,ARM::R11,ARM::R7 };
+ // For Thumb1 mode, we don't want to allocate hi regs at all, as we
+ // don't know how to spill them. If we make our prologue/epilogue code
+ // smarter at some point, we can go back to using the above allocation
+ // orders for the Thumb1 instructions that know how to use hi regs.
+ static const unsigned THUMB_GPR_AO[] = {
+ ARM::R0, ARM::R1, ARM::R2, ARM::R3,
+ ARM::R4, ARM::R5, ARM::R6, ARM::R7 };
+
GPRClass::iterator
GPRClass::allocation_order_begin(const MachineFunction &MF) const {
const TargetMachine &TM = MF.getTarget();
const ARMSubtarget &Subtarget = TM.getSubtarget<ARMSubtarget>();
+ if (Subtarget.isThumb1Only())
+ return THUMB_GPR_AO;
if (Subtarget.isTargetDarwin()) {
if (Subtarget.isR9Reserved())
return ARM_GPR_AO_4;
const ARMSubtarget &Subtarget = TM.getSubtarget<ARMSubtarget>();
GPRClass::iterator I;
+ if (Subtarget.isThumb1Only()) {
+ I = THUMB_GPR_AO + (sizeof(THUMB_GPR_AO)/sizeof(unsigned));
+ // Mac OS X requires FP not to be clobbered for backtracing purpose.
+ return (Subtarget.isTargetDarwin() || RI->hasFP(MF)) ? I-1 : I;
+ }
+
if (Subtarget.isTargetDarwin()) {
if (Subtarget.isR9Reserved())
I = ARM_GPR_AO_4 + (sizeof(ARM_GPR_AO_4)/sizeof(unsigned));
// Subset of DPR that are accessible with VFP2 (and so that also have
// 32-bit SPR subregs).
-def DPR_VFP2 : RegisterClass<"ARM", [f64, v2i32, v2f32], 64,
+def DPR_VFP2 : RegisterClass<"ARM", [f64, v8i8, v4i16, v2i32, v1i64, v2f32], 64,
[D0, D1, D2, D3, D4, D5, D6, D7,
D8, D9, D10, D11, D12, D13, D14, D15]> {
let SubRegClassList = [SPR, SPR];
// Subset of DPR which can be used as a source of NEON scalars for 16-bit
// operations
-def DPR_8 : RegisterClass<"ARM", [f64, v4i16, v2f32], 64,
+def DPR_8 : RegisterClass<"ARM", [f64, v8i8, v4i16, v2i32, v1i64, v2f32], 64,
[D0, D1, D2, D3, D4, D5, D6, D7]> {
let SubRegClassList = [SPR_8, SPR_8];
}
let SubRegClassList = [SPR, SPR, SPR, SPR, DPR_VFP2, DPR_VFP2];
}
+// Subset of QPR that have DPR_8 and SPR_8 subregs.
+def QPR_8 : RegisterClass<"ARM", [v16i8, v8i16, v4i32, v2i64, v4f32, v2f64],
+ 128,
+ [Q0, Q1, Q2, Q3]> {
+ let SubRegClassList = [SPR_8, SPR_8, SPR_8, SPR_8, DPR_8, DPR_8];
+}
+
+// Pseudo 256-bit vector register class to model pairs of Q registers.
+def QQPR : RegisterClass<"ARM", [v4i64],
+ 256,
+ [QQ0, QQ1, QQ2, QQ3, QQ4, QQ5, QQ6, QQ7]> {
+ let SubRegClassList = [SPR_INVALID, SPR_INVALID, SPR_INVALID, SPR_INVALID,
+ DPR, DPR, DPR, DPR, QPR, QPR];
+}
+
+// Subset of QQPR that have 32-bit SPR subregs.
+def QQPR_VFP2 : RegisterClass<"ARM", [v4i64],
+ 256,
+ [QQ0, QQ1, QQ2, QQ3]> {
+ let SubRegClassList = [SPR, SPR, SPR, SPR,
+ DPR_VFP2, DPR_VFP2, DPR_VFP2, DPR_VFP2,
+ QPR_VFP2, QPR_VFP2];
+}
+
+// Subset of QQPR that have QPR_8, DPR_8, and SPR_8 subregs.
+def QQPR_8 : RegisterClass<"ARM", [v4i64],
+ 256,
+ [QQ0, QQ1]> {
+ let SubRegClassList = [SPR_8, SPR_8, SPR_8, SPR_8,
+ DPR_8, DPR_8, DPR_8, DPR_8,
+ QPR_8, QPR_8];
+}
+
// Condition code registers.
def CCR : RegisterClass<"ARM", [i32], 32, [CPSR]>;
def arm_ssubreg_3 : PatLeaf<(i32 4)>;
def arm_dsubreg_0 : PatLeaf<(i32 5)>;
def arm_dsubreg_1 : PatLeaf<(i32 6)>;
+def arm_dsubreg_2 : PatLeaf<(i32 7)>;
+def arm_dsubreg_3 : PatLeaf<(i32 8)>;
+def arm_qsubreg_0 : PatLeaf<(i32 9)>;
+def arm_qsubreg_1 : PatLeaf<(i32 10)>;
// S sub-registers of D registers.
def : SubRegSet<1, [D0, D1, D2, D3, D4, D5, D6, D7,
Q8, Q9, Q10, Q11, Q12, Q13, Q14, Q15],
[D1, D3, D5, D7, D9, D11, D13, D15,
D17, D19, D21, D23, D25, D27, D29, D31]>;
+
+// S sub-registers of QQ registers. Note there are no sub-indices
+// for referencing S4 - S7, S12 - S15, and S20 - S23. It doesn't
+// look like we need them.
+def : SubRegSet<1, [QQ0, QQ1, QQ2, QQ3],
+ [S0, S8, S16, S24]>;
+def : SubRegSet<2, [QQ0, QQ1, QQ2, QQ3],
+ [S1, S9, S17, S25]>;
+def : SubRegSet<3, [QQ0, QQ1, QQ2, QQ3],
+ [S2, S10, S18, S26]>;
+def : SubRegSet<4, [QQ0, QQ1, QQ2, QQ3],
+ [S3, S11, S19, S27]>;
+
+// D sub-registers of QQ registers.
+def : SubRegSet<5, [QQ0, QQ1, QQ2, QQ3, QQ4, QQ5, QQ6, QQ7],
+ [D0, D4, D8, D12, D16, D20, D24, D28]>;
+def : SubRegSet<6, [QQ0, QQ1, QQ2, QQ3, QQ4, QQ5, QQ6, QQ7],
+ [D1, D5, D9, D13, D17, D21, D25, D29]>;
+def : SubRegSet<7, [QQ0, QQ1, QQ2, QQ3, QQ4, QQ5, QQ6, QQ7],
+ [D2, D6, D10, D14, D18, D22, D26, D30]>;
+def : SubRegSet<8, [QQ0, QQ1, QQ2, QQ3, QQ4, QQ5, QQ6, QQ7],
+ [D3, D7, D11, D15, D19, D23, D27, D31]>;
+
+// Q sub-registers of QQ registers.
+def : SubRegSet<9, [QQ0, QQ1, QQ2, QQ3, QQ4, QQ5, QQ6, QQ7],
+ [Q0, Q2, Q4, Q6, Q8, Q10, Q12, Q14]>;
+def : SubRegSet<10,[QQ0, QQ1, QQ2, QQ3, QQ4, QQ5, QQ6, QQ7],
+ [Q1, Q3, Q5, Q7, Q9, Q11, Q13, Q15]>;
projects / oota-llvm.git / blobdiff