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[mips] Refactor conditional branch instructions with one register operand.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170659 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Akira Hatanaka 2012-12-20 04:13:23 +00:00
parent 488fdce982
commit 5c54025645
3 changed files with 24 additions and 14 deletions
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8
lib/Target/Mips/Mips64InstrInfo.td
View File

@ -168,10 +168,10 @@ def SCD_P8 : SCBase<0x3c, "scd", CPU64Regs, mem64>,
def JR64 : IndirectBranch<CPU64Regs>;
def BEQ64 : CBranch<"beq", seteq, CPU64Regs>, BEQ_FM<4>;
def BNE64 : CBranch<"bne", setne, CPU64Regs>, BEQ_FM<5>;
def BGEZ64 : CBranchZero<0x01, 1, "bgez", setge, CPU64Regs>;
def BGTZ64 : CBranchZero<0x07, 0, "bgtz", setgt, CPU64Regs>;
def BLEZ64 : CBranchZero<0x06, 0, "blez", setle, CPU64Regs>;
def BLTZ64 : CBranchZero<0x01, 0, "bltz", setlt, CPU64Regs>;
def BGEZ64 : CBranchZero<"bgez", setge, CPU64Regs>, BGEZ_FM<1, 1>;
def BGTZ64 : CBranchZero<"bgtz", setgt, CPU64Regs>, BGEZ_FM<7, 0>;
def BLEZ64 : CBranchZero<"blez", setle, CPU64Regs>, BGEZ_FM<6, 0>;
def BLTZ64 : CBranchZero<"bltz", setlt, CPU64Regs>, BGEZ_FM<1, 0>;
}
let DecoderNamespace = "Mips64" in
def JALR64 : JumpLinkReg<0x00, 0x09, "jalr", CPU64Regs>;

12
lib/Target/Mips/MipsInstrFormats.td
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@ -265,6 +265,18 @@ class BEQ_FM<bits<6> op> {
let Inst{15-0} = offset;
}
class BGEZ_FM<bits<6> op, bits<5> funct> {
bits<5> rs;
bits<16> offset;
bits<32> Inst;
let Inst{31-26} = op;
let Inst{25-21} = rs;
let Inst{20-16} = funct;
let Inst{15-0} = offset;
}
//===----------------------------------------------------------------------===//
//
// FLOATING POINT INSTRUCTION FORMATS

18
lib/Target/Mips/MipsInstrInfo.td
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@ -556,12 +556,10 @@ class CBranch<string opstr, PatFrag cond_op, RegisterClass RC> :
let Defs = [AT];
}
class CBranchZero<bits<6> op, bits<5> _rt, string instr_asm, PatFrag cond_op,
RegisterClass RC>:
BranchBase<op, (outs), (ins RC:$rs, brtarget:$imm16),
!strconcat(instr_asm, "\t$rs, $imm16"),
[(brcond (i32 (cond_op RC:$rs, 0)), bb:$imm16)], IIBranch> {
let rt = _rt;
class CBranchZero<string opstr, PatFrag cond_op, RegisterClass RC> :
InstSE<(outs), (ins RC:$rs, brtarget:$offset),
!strconcat(opstr, "\t$rs, $offset"),
[(brcond (i32 (cond_op RC:$rs, 0)), bb:$offset)], IIBranch, FrmI> {
let isBranch = 1;
let isTerminator = 1;
let hasDelaySlot = 1;
@ -999,10 +997,10 @@ def JR : IndirectBranch<CPURegs>;
def B : UncondBranch<0x04, "b">;
def BEQ : CBranch<"beq", seteq, CPURegs>, BEQ_FM<4>;
def BNE : CBranch<"bne", setne, CPURegs>, BEQ_FM<5>;
def BGEZ : CBranchZero<0x01, 1, "bgez", setge, CPURegs>;
def BGTZ : CBranchZero<0x07, 0, "bgtz", setgt, CPURegs>;
def BLEZ : CBranchZero<0x06, 0, "blez", setle, CPURegs>;
def BLTZ : CBranchZero<0x01, 0, "bltz", setlt, CPURegs>;
def BGEZ : CBranchZero<"bgez", setge, CPURegs>, BGEZ_FM<1, 1>;
def BGTZ : CBranchZero<"bgtz", setgt, CPURegs>, BGEZ_FM<7, 0>;
def BLEZ : CBranchZero<"blez", setle, CPURegs>, BGEZ_FM<6, 0>;
def BLTZ : CBranchZero<"bltz", setlt, CPURegs>, BGEZ_FM<1, 0>;
let rt = 0, rs = 0, isBranch = 1, isTerminator = 1, isBarrier = 1,
hasDelaySlot = 1, Defs = [RA] in