aboutsummaryrefslogtreecommitdiffstats
path: root/lib/Target/Mips/Mips16InstrInfo.td
diff options
context:
space:
mode:
Diffstat (limited to 'lib/Target/Mips/Mips16InstrInfo.td')
-rw-r--r--lib/Target/Mips/Mips16InstrInfo.td148
1 files changed, 122 insertions, 26 deletions
diff --git a/lib/Target/Mips/Mips16InstrInfo.td b/lib/Target/Mips/Mips16InstrInfo.td
index aef4e92..7441c78 100644
--- a/lib/Target/Mips/Mips16InstrInfo.td
+++ b/lib/Target/Mips/Mips16InstrInfo.td
@@ -32,6 +32,16 @@ def mem16_ea : Operand<i32> {
}
//
+// I-type instruction format
+//
+// this is only used by bimm. the actual assembly value is a 12 bit signed
+// number
+//
+class FI16_ins<bits<5> op, string asmstr, InstrItinClass itin>:
+ FI16<op, (outs), (ins brtarget:$imm16),
+ !strconcat(asmstr, "\t$imm16 # 16 bit inst"), [], itin>;
+
+//
//
// I8 instruction format
//
@@ -41,7 +51,10 @@ class FI816_ins_base<bits<3> _func, string asmstr,
FI816<_func, (outs), (ins simm16:$imm), !strconcat(asmstr, asmstr2),
[], itin>;
-
+class FI816_ins<bits<3> _func, string asmstr,
+ InstrItinClass itin>:
+ FI816_ins_base<_func, asmstr, "\t$imm # 16 bit inst", itin>;
+
class FI816_SP_ins<bits<3> _func, string asmstr,
InstrItinClass itin>:
FI816_ins_base<_func, asmstr, "\t$$sp, $imm # 16 bit inst", itin>;
@@ -60,6 +73,11 @@ class FRI16_ins<bits<5> op, string asmstr,
InstrItinClass itin>:
FRI16_ins_base<op, asmstr, "\t$rx, $imm \t# 16 bit inst", itin>;
+class FRI16_TCP_ins<bits<5> _op, string asmstr,
+ InstrItinClass itin>:
+ FRI16<_op, (outs CPU16Regs:$rx), (ins pcrel16:$imm, i32imm:$size),
+ !strconcat(asmstr, "\t$rx, $imm\t# 16 bit inst"), [], itin>;
+
class FRI16R_ins_base<bits<5> op, string asmstr, string asmstr2,
InstrItinClass itin>:
FRI16<op, (outs), (ins CPU16Regs:$rx, simm16:$imm),
@@ -172,6 +190,11 @@ class FEXT_RI16_B_ins<bits<5> _op, string asmstr,
FEXT_RI16<_op, (outs), (ins CPU16Regs:$rx, brtarget:$imm),
!strconcat(asmstr, "\t$rx, $imm"), [], itin>;
+class FEXT_RI16_TCP_ins<bits<5> _op, string asmstr,
+ InstrItinClass itin>:
+ FEXT_RI16<_op, (outs CPU16Regs:$rx), (ins pcrel16:$imm, i32imm:$size),
+ !strconcat(asmstr, "\t$rx, $imm"), [], itin>;
+
class FEXT_2RI16_ins<bits<5> _op, string asmstr,
InstrItinClass itin>:
FEXT_RI16<_op, (outs CPU16Regs:$rx), (ins CPU16Regs:$rx_, simm16:$imm),
@@ -220,7 +243,7 @@ class FEXT_RRI_A16_mem_ins<bits<1> op, string asmstr, Operand MemOpnd,
// EXT-SHIFT instruction format
//
class FEXT_SHIFT16_ins<bits<2> _f, string asmstr, InstrItinClass itin>:
- FEXT_SHIFT16<_f, (outs CPU16Regs:$rx), (ins CPU16Regs:$ry, shamt:$sa),
+ FEXT_SHIFT16<_f, (outs CPU16Regs:$rx), (ins CPU16Regs:$ry, uimm5:$sa),
!strconcat(asmstr, "\t$rx, $ry, $sa"), [], itin>;
//
@@ -343,6 +366,14 @@ class FRR16_JALRC_ins<bits<1> nd, bits<1> l, bits<1> ra,
FRR16_JALRC<nd, l, ra, (outs), (ins CPU16Regs:$rx),
!strconcat(asmstr, "\t $rx"), [], itin> ;
+class FRR_SF16_ins
+ <bits<5> _funct, bits<3> _subfunc,
+ string asmstr, InstrItinClass itin>:
+ FRR_SF16<_funct, _subfunc, (outs CPU16Regs:$rx), (ins CPU16Regs:$rx_),
+ !strconcat(asmstr, "\t $rx"),
+ [], itin> {
+ let Constraints = "$rx_ = $rx";
+ }
//
// RRR-type instruction format
//
@@ -447,7 +478,7 @@ def Constant32:
MipsPseudo16<(outs), (ins imm32:$imm), "\t.word $imm", []>;
def LwConstant32:
- MipsPseudo16<(outs CPU16Regs:$rx), (ins imm32:$imm),
+ MipsPseudo16<(outs CPU16Regs:$rx), (ins imm32:$imm, imm32:$constid),
"lw\t$rx, 1f\n\tb\t2f\n\t.align\t2\n1: \t.word\t$imm\n2:", []>;
@@ -559,6 +590,14 @@ def BeqzRxImm16: FRI16_B_ins<0b00100, "beqz", IIAlu>, cbranch16;
//
def BeqzRxImmX16: FEXT_RI16_B_ins<0b00100, "beqz", IIAlu>, cbranch16;
+//
+// Format: B offset MIPS16e
+// Purpose: Unconditional Branch (Extended)
+// To do an unconditional PC-relative branch.
+//
+
+def Bimm16: FI16_ins<0b00010, "b", IIAlu>, branch16;
+
// Format: B offset MIPS16e
// Purpose: Unconditional Branch
// To do an unconditional PC-relative branch.
@@ -591,6 +630,10 @@ def Break16: FRRBreakNull16_ins<"break 0", NoItinerary>;
// Purpose: Branch on T Equal to Zero (Extended)
// To test special register T then do a PC-relative conditional branch.
//
+def Bteqz16: FI816_ins<0b000, "bteqz", IIAlu>, cbranch16 {
+ let Uses = [T8];
+}
+
def BteqzX16: FEXT_I816_ins<0b000, "bteqz", IIAlu>, cbranch16 {
let Uses = [T8];
}
@@ -614,6 +657,11 @@ def BteqzT8SltiuX16: FEXT_T8I8I16_ins<"bteqz", "sltiu">,
// Purpose: Branch on T Not Equal to Zero (Extended)
// To test special register T then do a PC-relative conditional branch.
//
+
+def Btnez16: FI816_ins<0b001, "btnez", IIAlu>, cbranch16 {
+ let Uses = [T8];
+}
+
def BtnezX16: FEXT_I816_ins<0b001, "btnez", IIAlu> ,cbranch16 {
let Uses = [T8];
}
@@ -665,7 +713,7 @@ def CmpiRxImmX16: FEXT_RI16R_ins<0b01110, "cmpi", IIAlu> {
// To divide 32-bit signed integers.
//
def DivRxRy16: FRR16_div_ins<0b11010, "div", IIAlu> {
- let Defs = [HI, LO];
+ let Defs = [HI0, LO0];
}
//
@@ -674,7 +722,7 @@ def DivRxRy16: FRR16_div_ins<0b11010, "div", IIAlu> {
// To divide 32-bit unsigned integers.
//
def DivuRxRy16: FRR16_div_ins<0b11011, "divu", IIAlu> {
- let Defs = [HI, LO];
+ let Defs = [HI0, LO0];
}
//
// Format: JAL target MIPS16e
@@ -684,10 +732,7 @@ def DivuRxRy16: FRR16_div_ins<0b11011, "divu", IIAlu> {
//
def Jal16 : FJAL16_ins<0b0, "jal", IIAlu> {
- let isBranch = 1;
let hasDelaySlot = 0; // not true, but we add the nop for now
- let isTerminator=1;
- let isBarrier=1;
let isCall=1;
}
@@ -771,6 +816,10 @@ def LiRxImm16: FRI16_ins<0b01101, "li", IIAlu>;
//
def LiRxImmX16: FEXT_RI16_ins<0b01101, "li", IIAlu>;
+def LiRxImmAlignX16: FEXT_RI16_ins<0b01101, ".align 2\n\tli", IIAlu> {
+ let isCodeGenOnly = 1;
+}
+
//
// Format: LW ry, offset(rx) MIPS16e
// Purpose: Load Word (Extended)
@@ -784,10 +833,13 @@ def LwRxRyOffMemX16: FEXT_RRI16_mem_ins<0b10011, "lw", mem16, IILoad>, MayLoad{
// Purpose: Load Word (SP-Relative, Extended)
// To load an SP-relative word from memory as a signed value.
//
-def LwRxSpImmX16: FEXT_RI16_SP_explicit_ins<0b10110, "lw", IILoad>, MayLoad{
+def LwRxSpImmX16: FEXT_RI16_SP_explicit_ins<0b10010, "lw", IILoad>, MayLoad{
let Uses = [SP];
}
+def LwRxPcTcp16: FRI16_TCP_ins<0b10110, "lw", IILoad>, MayLoad;
+
+def LwRxPcTcpX16: FEXT_RI16_TCP_ins<0b10110, "lw", IILoad>, MayLoad;
//
// Format: MOVE r32, rz MIPS16e
// Purpose: Move
@@ -808,7 +860,7 @@ def MoveR3216: FI8_MOVR3216_ins<"move", IIAlu>;
// To copy the special purpose HI register to a GPR.
//
def Mfhi16: FRR16_M_ins<0b10000, "mfhi", IIAlu> {
- let Uses = [HI];
+ let Uses = [HI0];
let neverHasSideEffects = 1;
}
@@ -818,7 +870,7 @@ def Mfhi16: FRR16_M_ins<0b10000, "mfhi", IIAlu> {
// To copy the special purpose LO register to a GPR.
//
def Mflo16: FRR16_M_ins<0b10010, "mflo", IIAlu> {
- let Uses = [LO];
+ let Uses = [LO0];
let neverHasSideEffects = 1;
}
@@ -828,13 +880,13 @@ def Mflo16: FRR16_M_ins<0b10010, "mflo", IIAlu> {
def MultRxRy16: FMULT16_ins<"mult", IIAlu> {
let isCommutable = 1;
let neverHasSideEffects = 1;
- let Defs = [HI, LO];
+ let Defs = [HI0, LO0];
}
def MultuRxRy16: FMULT16_ins<"multu", IIAlu> {
let isCommutable = 1;
let neverHasSideEffects = 1;
- let Defs = [HI, LO];
+ let Defs = [HI0, LO0];
}
//
@@ -845,7 +897,7 @@ def MultuRxRy16: FMULT16_ins<"multu", IIAlu> {
def MultRxRyRz16: FMULT16_LO_ins<"mult", IIAlu> {
let isCommutable = 1;
let neverHasSideEffects = 1;
- let Defs = [HI, LO];
+ let Defs = [HI0, LO0];
}
//
@@ -856,7 +908,7 @@ def MultRxRyRz16: FMULT16_LO_ins<"mult", IIAlu> {
def MultuRxRyRz16: FMULT16_LO_ins<"multu", IIAlu> {
let isCommutable = 1;
let neverHasSideEffects = 1;
- let Defs = [HI, LO];
+ let Defs = [HI0, LO0];
}
//
@@ -951,6 +1003,22 @@ def SbRxRyOffMemX16:
FEXT_RRI16_mem2_ins<0b11000, "sb", mem16, IIStore>, MayStore;
//
+// Format: SEB rx MIPS16e
+// Purpose: Sign-Extend Byte
+// Sign-extend least significant byte in register rx.
+//
+def SebRx16
+ : FRR_SF16_ins<0b10001, 0b100, "seb", IIAlu>;
+
+//
+// Format: SEH rx MIPS16e
+// Purpose: Sign-Extend Halfword
+// Sign-extend least significant word in register rx.
+//
+def SehRx16
+ : FRR_SF16_ins<0b10001, 0b101, "seh", IIAlu>;
+
+//
// The Sel(T) instructions are pseudos
// T means that they use T8 implicitly.
//
@@ -1075,7 +1143,7 @@ def ShRxRyOffMemX16:
//
// Format: SLL rx, ry, sa MIPS16e
// Purpose: Shift Word Left Logical (Extended)
-// To execute a left-shift of a word by a fixed number of bits—0 to 31 bits.
+// To execute a left-shift of a word by a fixed number of bits-0 to 31 bits.
//
def SllX16: FEXT_SHIFT16_ins<0b00, "sll", IIAlu>;
@@ -1171,7 +1239,7 @@ def SravRxRy16: FRxRxRy16_ins<0b00111, "srav", IIAlu>;
// Format: SRA rx, ry, sa MIPS16e
// Purpose: Shift Word Right Arithmetic (Extended)
// To execute an arithmetic right-shift of a word by a fixed
-// number of bits—1 to 8 bits.
+// number of bits-1 to 8 bits.
//
def SraX16: FEXT_SHIFT16_ins<0b11, "sra", IIAlu>;
@@ -1189,7 +1257,7 @@ def SrlvRxRy16: FRxRxRy16_ins<0b00110, "srlv", IIAlu>;
// Format: SRL rx, ry, sa MIPS16e
// Purpose: Shift Word Right Logical (Extended)
// To execute a logical right-shift of a word by a fixed
-// number of bits—1 to 31 bits.
+// number of bits-1 to 31 bits.
//
def SrlX16: FEXT_SHIFT16_ins<0b10, "srl", IIAlu>;
@@ -1330,9 +1398,7 @@ def: Mips16Pat<(i32 addr16:$addr),
// Large (>16 bit) immediate loads
-def : Mips16Pat<(i32 imm:$imm),
- (OrRxRxRy16 (SllX16 (LiRxImmX16 (HI16 imm:$imm)), 16),
- (LiRxImmX16 (LO16 imm:$imm)))>;
+def : Mips16Pat<(i32 imm:$imm), (LwConstant32 imm:$imm, -1)>;
// Carry MipsPatterns
def : Mips16Pat<(subc CPU16Regs:$lhs, CPU16Regs:$rhs),
@@ -1373,7 +1439,7 @@ def: Mips16Pat
def: Mips16Pat
<(brcond (i32 (seteq CPU16Regs:$rx, 0)), bb:$targ16),
- (BeqzRxImmX16 CPU16Regs:$rx, bb:$targ16)
+ (BeqzRxImm16 CPU16Regs:$rx, bb:$targ16)
>;
//
@@ -1435,7 +1501,7 @@ def: Mips16Pat
def: Mips16Pat
<(brcond (i32 (setne CPU16Regs:$rx, 0)), bb:$targ16),
- (BnezRxImmX16 CPU16Regs:$rx, bb:$targ16)
+ (BnezRxImm16 CPU16Regs:$rx, bb:$targ16)
>;
//
@@ -1443,7 +1509,7 @@ def: Mips16Pat
//
def: Mips16Pat
<(brcond CPU16Regs:$rx, bb:$targ16),
- (BnezRxImmX16 CPU16Regs:$rx, bb:$targ16)
+ (BnezRxImm16 CPU16Regs:$rx, bb:$targ16)
>;
//
@@ -1473,7 +1539,7 @@ def: Mips16Pat
// (BtnezT8SltuX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
// >;
-def: UncondBranch16_pat<br, BimmX16>;
+def: UncondBranch16_pat<br, Bimm16>;
// Small immediates
def: Mips16Pat<(i32 immSExt16:$in),
@@ -1787,7 +1853,8 @@ def: Mips16Pat<(add CPU16Regs:$hi, (MipsLo tglobaladdr:$lo)),
(AddiuRxRxImmX16 CPU16Regs:$hi, tglobaladdr:$lo)>;
// hi/lo relocs
-
+def : Mips16Pat<(MipsHi tblockaddress:$in),
+ (SllX16 (LiRxImmX16 tblockaddress:$in), 16)>;
def : Mips16Pat<(MipsHi tglobaladdr:$in),
(SllX16 (LiRxImmX16 tglobaladdr:$in), 16)>;
def : Mips16Pat<(MipsHi tjumptable:$in),
@@ -1795,6 +1862,8 @@ def : Mips16Pat<(MipsHi tjumptable:$in),
def : Mips16Pat<(MipsHi tglobaltlsaddr:$in),
(SllX16 (LiRxImmX16 tglobaltlsaddr:$in), 16)>;
+def : Mips16Pat<(MipsLo tblockaddress:$in), (LiRxImmX16 tblockaddress:$in)>;
+
// wrapper_pic
class Wrapper16Pat<SDNode node, Instruction ADDiuOp, RegisterClass RC>:
Mips16Pat<(MipsWrapper RC:$gp, node:$in),
@@ -1811,3 +1880,30 @@ def : Mips16Pat<(i32 (extloadi16 addr16:$src)),
def: Mips16Pat<(trap), (Break16)>;
+def : Mips16Pat<(sext_inreg CPU16Regs:$val, i8),
+ (SebRx16 CPU16Regs:$val)>;
+
+def : Mips16Pat<(sext_inreg CPU16Regs:$val, i16),
+ (SehRx16 CPU16Regs:$val)>;
+
+def GotPrologue16:
+ MipsPseudo16<
+ (outs CPU16Regs:$rh, CPU16Regs:$rl),
+ (ins simm16:$immHi, simm16:$immLo),
+ ".align 2\n\tli\t$rh, $immHi\n\taddiu\t$rl, $$pc, $immLo\n ",[]> ;
+
+// An operand for the CONSTPOOL_ENTRY pseudo-instruction.
+def cpinst_operand : Operand<i32> {
+ // let PrintMethod = "printCPInstOperand";
+}
+
+// CONSTPOOL_ENTRY - This instruction represents a floating constant pool in
+// the function. The first operand is the ID# for this instruction, the second
+// is the index into the MachineConstantPool that this is, the third is the
+// size in bytes of this constant pool entry.
+//
+let neverHasSideEffects = 1, isNotDuplicable = 1 in
+def CONSTPOOL_ENTRY :
+MipsPseudo16<(outs), (ins cpinst_operand:$instid, cpinst_operand:$cpidx,
+ i32imm:$size), "foo", []>;
+
generated by cgit v1.1 at 2024-05-17 21:03:50 +0000