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Add encodings for VCVT instructions.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116385 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2010-10-13 00:56:35 +00:00
parent 89c898f8af
commit 54908dd72b
2 changed files with 43 additions and 6 deletions
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33
lib/Target/ARM/ARMInstrVFP.td
View File

@ -366,14 +366,35 @@ def VCMPZS : ASuI<0b11101, 0b11, 0b0101, 0b01, 0, (outs), (ins SPR:$a),
[/* For disassembly only; pattern left blank */]>; [/* For disassembly only; pattern left blank */]>;
} }
def VCVTDS : ASuI<0b11101, 0b11, 0b0111, 0b11, 0, (outs DPR:$dst), (ins SPR:$a), def VCVTDS : ASuI<0b11101, 0b11, 0b0111, 0b11, 0,
IIC_fpCVTDS, "vcvt", ".f64.f32\t$dst, $a", (outs DPR:$Dd), (ins SPR:$Sm),
[(set DPR:$dst, (fextend SPR:$a))]>; IIC_fpCVTDS, "vcvt", ".f64.f32\t$Dd, $Sm",
[(set DPR:$Dd, (fextend SPR:$Sm))]> {
// Instruction operands.
bits<5> Dd;
bits<5> Sm;
// Encode instruction operands.
let Inst{3-0} = Sm{4-1};
let Inst{5} = Sm{0};
let Inst{15-12} = Dd{3-0};
let Inst{22} = Dd{4};
}
// Special case encoding: bits 11-8 is 0b1011. // Special case encoding: bits 11-8 is 0b1011.
def VCVTSD : VFPAI<(outs SPR:$dst), (ins DPR:$a), VFPUnaryFrm, def VCVTSD : VFPAI<(outs SPR:$Sd), (ins DPR:$Dm), VFPUnaryFrm,
IIC_fpCVTSD, "vcvt", ".f32.f64\t$dst, $a", IIC_fpCVTSD, "vcvt", ".f32.f64\t$Sd, $Dm",
[(set SPR:$dst, (fround DPR:$a))]> { [(set SPR:$Sd, (fround DPR:$Dm))]> {
// Instruction operands.
bits<5> Sd;
bits<5> Dm;
// Encode instruction operands.
let Inst{3-0} = Dm{3-0};
let Inst{5} = Dm{4};
let Inst{15-12} = Sd{4-1};
let Inst{22} = Sd{0};
let Inst{27-23} = 0b11101; let Inst{27-23} = 0b11101;
let Inst{21-16} = 0b110111; let Inst{21-16} = 0b110111;
let Inst{11-8} = 0b1011; let Inst{11-8} = 0b1011;

16
test/MC/ARM/simple-fp-encoding.ll
View File

@ -140,3 +140,19 @@ entry:
} }
declare float @fabsf(float) declare float @fabsf(float)
define float @f17(double %a) nounwind readnone {
entry:
; CHECK: f17
; CHECK: vcvt.f32.f64 s0, d16 @ encoding: [0xe0,0x0b,0xb7,0xee]
%conv = fptrunc double %a to float
ret float %conv
}
define double @f18(float %a) nounwind readnone {
entry:
; CHECK: f18
; CHECK: vcvt.f64.f32 d16, s0 @ encoding: [0xc0,0x0a,0xf7,0xee]
%conv = fpext float %a to double
ret double %conv
}