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-rw-r--r--lib/Target/Mips/MipsInstrInfo.td111
1 files changed, 61 insertions, 50 deletions
diff --git a/lib/Target/Mips/MipsInstrInfo.td b/lib/Target/Mips/MipsInstrInfo.td
index 57f24ad..f78fd5d 100644
--- a/lib/Target/Mips/MipsInstrInfo.td
+++ b/lib/Target/Mips/MipsInstrInfo.td
@@ -17,10 +17,16 @@ include "MipsInstrFormats.td"
// Mips profiles and nodes
//===----------------------------------------------------------------------===//
+def SDT_MipsRet : SDTypeProfile<0, 1, [SDTCisInt<0>]>;
+def SDT_MipsJmpLink : SDTypeProfile<0, 1, [SDTCisVT<0, iPTR>]>;
+def SDT_MipsSelectCC : SDTypeProfile<1, 3, [SDTCisSameAs<0, 1>,
+ SDTCisSameAs<1, 2>, SDTCisInt<3>]>;
+def SDT_MipsCallSeqStart : SDCallSeqStart<[SDTCisVT<0, i32>]>;
+def SDT_MipsCallSeqEnd : SDCallSeqEnd<[SDTCisVT<0, i32>, SDTCisVT<1, i32>]>;
+
// Call
-def SDT_MipsJmpLink : SDTypeProfile<0, 1, [SDTCisVT<0, iPTR>]>;
-def MipsJmpLink : SDNode<"MipsISD::JmpLink",SDT_MipsJmpLink, [SDNPHasChain,
- SDNPOutFlag]>;
+def MipsJmpLink : SDNode<"MipsISD::JmpLink",SDT_MipsJmpLink, [SDNPHasChain,
+ SDNPOutFlag]>;
// Hi and Lo nodes are used to handle global addresses. Used on
// MipsISelLowering to lower stuff like GlobalAddress, ExternalSymbol
@@ -29,29 +35,22 @@ def MipsHi : SDNode<"MipsISD::Hi", SDTIntUnaryOp, [SDNPOutFlag]>;
def MipsLo : SDNode<"MipsISD::Lo", SDTIntUnaryOp>;
// Return
-def SDT_MipsRet : SDTypeProfile<0, 1, [SDTCisInt<0>]>;
-def MipsRet : SDNode<"MipsISD::Ret", SDT_MipsRet, [SDNPHasChain,
- SDNPOptInFlag]>;
+def MipsRet : SDNode<"MipsISD::Ret", SDT_MipsRet, [SDNPHasChain,
+ SDNPOptInFlag]>;
// These are target-independent nodes, but have target-specific formats.
-def SDT_MipsCallSeqStart : SDCallSeqStart<[SDTCisVT<0, i32>]>;
-def SDT_MipsCallSeqEnd : SDCallSeqEnd<[SDTCisVT<0, i32>,
- SDTCisVT<1, i32>]>;
+def callseq_start : SDNode<"ISD::CALLSEQ_START", SDT_MipsCallSeqStart,
+ [SDNPHasChain, SDNPOutFlag]>;
+def callseq_end : SDNode<"ISD::CALLSEQ_END", SDT_MipsCallSeqEnd,
+ [SDNPHasChain, SDNPOptInFlag, SDNPOutFlag]>;
-def callseq_start : SDNode<"ISD::CALLSEQ_START", SDT_MipsCallSeqStart,
- [SDNPHasChain, SDNPOutFlag]>;
-def callseq_end : SDNode<"ISD::CALLSEQ_END", SDT_MipsCallSeqEnd,
- [SDNPHasChain, SDNPOptInFlag, SDNPOutFlag]>;
-
-// Select CC
-def SDT_MipsSelectCC : SDTypeProfile<1, 3, [SDTCisSameAs<0, 1>,
- SDTCisSameAs<1, 2>, SDTCisInt<3>]>;
-def MipsSelectCC : SDNode<"MipsISD::SelectCC", SDT_MipsSelectCC>;
+// Select Condition Code
+def MipsSelectCC : SDNode<"MipsISD::SelectCC", SDT_MipsSelectCC>;
//===----------------------------------------------------------------------===//
// Mips Instruction Predicate Definitions.
//===----------------------------------------------------------------------===//
-def IsStatic : Predicate<"TM.getRelocationModel() == Reloc::Static">;
+def IsAllegrex : Predicate<"Subtarget.isAllegrex()">;
//===----------------------------------------------------------------------===//
// Mips Operand, Complex Patterns and Transformations Definitions.
@@ -63,7 +62,6 @@ def calltarget : Operand<i32>;
def uimm16 : Operand<i32>;
def simm16 : Operand<i32>;
def shamt : Operand<i32>;
-def addrlabel : Operand<i32>;
// Address operand
def mem : Operand<i32> {
@@ -345,6 +343,12 @@ class EffectiveAddress<string instr_asm> :
instr_asm,
[(set CPURegs:$dst, addr:$addr)], IIAlu>;
+class SignExtInReg<bits<6> func, string instr_asm, ValueType vt>:
+ FR< 0x3f, func, (outs CPURegs:$dst), (ins CPURegs:$src),
+ !strconcat(instr_asm, " $dst, $src"),
+ [(set CPURegs:$dst, (sext_inreg CPURegs:$src, vt))], NoItinerary>;
+
+
//===----------------------------------------------------------------------===//
// Pseudo instructions
//===----------------------------------------------------------------------===//
@@ -352,11 +356,11 @@ class EffectiveAddress<string instr_asm> :
// As stack alignment is always done with addiu, we need a 16-bit immediate
let Defs = [SP], Uses = [SP] in {
def ADJCALLSTACKDOWN : MipsPseudo<(outs), (ins uimm16:$amt),
- "!ADJCALLSTACKDOWN $amt",
- [(callseq_start imm:$amt)]>;
+ "!ADJCALLSTACKDOWN $amt",
+ [(callseq_start imm:$amt)]>;
def ADJCALLSTACKUP : MipsPseudo<(outs), (ins uimm16:$amt1, uimm16:$amt2),
- "!ADJCALLSTACKUP $amt1",
- [(callseq_end imm:$amt1, imm:$amt2)]>;
+ "!ADJCALLSTACKUP $amt1",
+ [(callseq_end imm:$amt1, imm:$amt2)]>;
}
// When handling PIC code the assembler needs .cpload and .cprestore
@@ -364,10 +368,10 @@ def ADJCALLSTACKUP : MipsPseudo<(outs), (ins uimm16:$amt1, uimm16:$amt2),
// are used, we have the same behavior, but get also a bunch of warnings
// from the assembler.
def CPLOAD : MipsPseudo<(outs), (ins CPURegs:$reg),
- ".set noreorder\n\t.cpload $reg\n\t.set reorder\n",
- []>;
+ ".set noreorder\n\t.cpload $reg\n\t.set reorder\n",
+ []>;
def CPRESTORE : MipsPseudo<(outs), (ins uimm16:$loc),
- ".cprestore $loc\n", []>;
+ ".cprestore $loc\n", []>;
// The supported Mips ISAs dont have any instruction close to the SELECT_CC
// operation. The solution is to create a Mips pseudo SELECT_CC instruction
@@ -474,19 +478,6 @@ def MFLO : MoveFromTo<0x12, "mflo">;
def MTHI : MoveFromTo<0x11, "mthi">;
def MTLO : MoveFromTo<0x13, "mtlo">;
-// Count Leading
-// CLO/CLZ are part of the newer MIPS32(tm) instruction
-// set and not older Mips I keep this for future use
-// though.
-//def CLO : CountLeading<0x21, "clo">;
-//def CLZ : CountLeading<0x20, "clz">;
-
-// MADD*/MSUB* are not part of MipsI either.
-//def MADD : MArithR<0x00, "madd">;
-//def MADDU : MArithR<0x01, "maddu">;
-//def MSUB : MArithR<0x04, "msub">;
-//def MSUBU : MArithR<0x05, "msubu">;
-
// No operation
let addr=0 in
def NOP : FJ<0, (outs), (ins), "nop", [], IIAlu>;
@@ -506,6 +497,27 @@ let isReturn=1, isTerminator=1, hasDelaySlot=1,
// can be matched. It's similar to Sparc LEA_ADDRi
def LEA_ADDiu : EffectiveAddress<"addiu $dst, ${addr:stackloc}">;
+// Count Leading
+// CLO/CLZ are part of the newer MIPS32(tm) instruction
+// set and not older Mips I keep this for future use
+// though.
+//def CLO : CountLeading<0x21, "clo">;
+//def CLZ : CountLeading<0x20, "clz">;
+
+// MADD*/MSUB* are not part of MipsI either.
+//def MADD : MArithR<0x00, "madd">;
+//def MADDU : MArithR<0x01, "maddu">;
+//def MSUB : MArithR<0x04, "msub">;
+//def MSUBU : MArithR<0x05, "msubu">;
+
+let Predicates = [IsAllegrex] in {
+ let shamt = 0x10, rs = 0 in
+ def SEB : SignExtInReg<0x21, "seb", i8>;
+
+ let shamt = 0x18, rs = 0 in
+ def SEH : SignExtInReg<0x20, "seh", i16>;
+}
+
//===----------------------------------------------------------------------===//
// Arbitrary patterns that map to one or more instructions
//===----------------------------------------------------------------------===//
@@ -546,7 +558,7 @@ def : Pat<(MipsLo tjumptable:$in), (ADDiu ZERO, tjumptable:$in)>;
def : Pat<(add CPURegs:$hi, (MipsLo tjumptable:$lo)),
(ADDiu CPURegs:$hi, tjumptable:$lo)>;
-// Mips does not have not, so we increase the operation
+// Mips does not have "not", so we expand our way
def : Pat<(not CPURegs:$in),
(NOR CPURegs:$in, ZERO)>;
@@ -558,10 +570,7 @@ def : Pat<(i32 (extloadi16 addr:$src)), (LHu addr:$src)>;
// peepholes
def : Pat<(store (i32 0), addr:$dst), (SW ZERO, addr:$dst)>;
-///
-/// brcond patterns
-///
-
+// brcond patterns
// direct match equal/notequal zero branches
def : Pat<(brcond (setne CPURegs:$lhs, 0), bb:$dst),
(BNE CPURegs:$lhs, ZERO, bb:$dst)>;
@@ -601,12 +610,8 @@ def : Pat<(brcond (setult CPURegs:$lhs, CPURegs:$rhs), bb:$dst),
def : Pat<(brcond CPURegs:$cond, bb:$dst),
(BNE CPURegs:$cond, ZERO, bb:$dst)>;
-///
/// setcc patterns, only matched when there
/// is no brcond following a setcc operation
-///
-
-// setcc 2 register operands
def : Pat<(setle CPURegs:$lhs, CPURegs:$rhs),
(XORi (SLT CPURegs:$rhs, CPURegs:$lhs), 1)>;
def : Pat<(setule CPURegs:$lhs, CPURegs:$rhs),
@@ -630,8 +635,14 @@ def : Pat<(seteq CPURegs:$lhs, CPURegs:$rhs),
(XORi (OR (SLT CPURegs:$lhs, CPURegs:$rhs),
(SLT CPURegs:$rhs, CPURegs:$lhs)), 1)>;
-// setcc reg/imm operands
def : Pat<(setge CPURegs:$lhs, immSExt16:$rhs),
(XORi (SLTi CPURegs:$lhs, immSExt16:$rhs), 1)>;
def : Pat<(setuge CPURegs:$lhs, immZExt16:$rhs),
(XORi (SLTiu CPURegs:$lhs, immZExt16:$rhs), 1)>;
+
+//===----------------------------------------------------------------------===//
+// Floating Point Support
+//===----------------------------------------------------------------------===//
+
+include "MipsInstrFPU.td"
+
generated by cgit v1.1 at 2025-08-15 18:41:11 +0000