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[Hexagon] Adding floating point classification and creation. 

llvm-svn: 225374
This commit is contained in:
Colin LeMahieu 2015-01-07 20:28:57 +00:00
parent 4842c05216
commit 627df427eb
2 changed files with 57 additions and 0 deletions
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45
llvm/lib/Target/Hexagon/HexagonInstrInfoV5.td
View File

@ -437,6 +437,51 @@ def F2_sffma_sc: MInst <
let Inst{4-0} = Rx;
}
// Classify floating-point value
let Uses = [USR], isFP = 1, isCodeGenOnly = 0 in
def F2_sfclass : T_TEST_BIT_IMM<"sfclass", 0b111>;
let Uses = [USR], isFP = 1, isCodeGenOnly = 0 in
def F2_dfclass: ALU64Inst<(outs PredRegs:$Pd), (ins DoubleRegs:$Rss, u5Imm:$u5),
"$Pd = dfclass($Rss, #$u5)",
[], "" , ALU64_tc_2early_SLOT23 > , Requires<[HasV5T]> {
bits<2> Pd;
bits<5> Rss;
bits<5> u5;
let IClass = 0b1101;
let Inst{27-21} = 0b1100100;
let Inst{20-16} = Rss;
let Inst{12-10} = 0b000;
let Inst{9-5} = u5;
let Inst{4-3} = 0b10;
let Inst{1-0} = Pd;
}
// Instructions to create floating point constant
let hasNewValue = 1, opNewValue = 0 in
class T_fimm <string mnemonic, RegisterClass RC, bits<4> RegType, bit isNeg>
: ALU64Inst<(outs RC:$dst), (ins u10Imm:$src),
"$dst = "#mnemonic#"(#$src)"#!if(isNeg, ":neg", ":pos"),
[], "", ALU64_tc_3x_SLOT23>, Requires<[HasV5T]> {
bits<5> dst;
bits<10> src;
let IClass = 0b1101;
let Inst{27-24} = RegType;
let Inst{23} = 0b0;
let Inst{22} = isNeg;
let Inst{21} = src{9};
let Inst{13-5} = src{8-0};
let Inst{4-0} = dst;
}
let isCodeGenOnly = 0 in {
def F2_sfimm_p : T_fimm <"sfmake", IntRegs, 0b0110, 0>;
def F2_sfimm_n : T_fimm <"sfmake", IntRegs, 0b0110, 1>;
def F2_dfimm_p : T_fimm <"dfmake", DoubleRegs, 0b1001, 0>;
def F2_dfimm_n : T_fimm <"dfmake", DoubleRegs, 0b1001, 1>;
}
// Convert single precision to double precision and vice-versa.
def CONVERT_sf2df : ALU64_rr<(outs DoubleRegs:$dst), (ins IntRegs:$src),

12
llvm/test/MC/Disassembler/Hexagon/xtype_fp.txt
View File

@ -2,6 +2,10 @@
0x11 0xdf 0x15 0xeb
# CHECK: r17 = sfadd(r21, r31)
0x03 0xd5 0xf1 0x85
# CHECK: p3 = sfclass(r17, #21)
0xb3 0xc2 0x90 0xdc
# CHECK: p3 = dfclass(r17:16, #21)
0x03 0xd5 0xf1 0xc7
# CHECK: p3 = sfcmp.ge(r17, r21)
0x23 0xd5 0xf1 0xc7
@ -86,6 +90,14 @@
# CHECK: r17 += sfmpy(r21, r31):lib
0xf1 0xdf 0x15 0xef
# CHECK: r17 -= sfmpy(r21, r31):lib
0xb1 0xc2 0x00 0xd6
# CHECK: r17 = sfmake(#21):pos
0xb1 0xc2 0x40 0xd6
# CHECK: r17 = sfmake(#21):neg
0xb0 0xc2 0x00 0xd9
# CHECK: r17:16 = dfmake(#21):pos
0xb0 0xc2 0x40 0xd9
# CHECK: r17:16 = dfmake(#21):neg
0x11 0xdf 0x95 0xeb
# CHECK: r17 = sfmax(r21, r31)
0x31 0xdf 0x95 0xeb