[ARM] Add vcmp MC test

[SjoerdMeijer]

Summary

Minor cleanup in ARMInstrVFP.td: removed some FIXMEs and added a MC test for vcmp that was actually missing.

[rengolin]

Seems trivial. Comments inline.

test/MC/ARM/simple-fp-encoding.s

52

What about the vcvt encodings?

[SjoerdMeijer]

test/MC/ARM/simple-fp-encoding.s

52

The different vcvt tests are already present in fullfp16.s and in simple-fp-encoding.s (this file).

[rengolin]

Ok. LGTM, thanks!

lib/Target/ARM/ARMInstrVFP.td

def VCMPES : ASuI<0b11101, 0b11, 0b0100, 0b11, 0,
   let D = VFPNeonA8Domain;
 }
 
 def VCMPEH : AHuI<0b11101, 0b11, 0b0100, 0b11, 0,
                   (outs), (ins SPR:$Sd, SPR:$Sm),
                   IIC_fpCMP16, "vcmpe", ".f16\t$Sd, $Sm",
                   []>;
 
-
-// FIXME: Verify encoding after integrated assembler is working.
 def VCMPD  : ADuI<0b11101, 0b11, 0b0100, 0b01, 0,
                   (outs), (ins DPR:$Dd, DPR:$Dm),
                   IIC_fpCMP64, "vcmp", ".f64\t$Dd, $Dm",
                   [(arm_cmpfp DPR:$Dd, (f64 DPR:$Dm), (i32 0))]>;
 
 def VCMPS  : ASuI<0b11101, 0b11, 0b0100, 0b01, 0,
                   (outs), (ins SPR:$Sd, SPR:$Sm),
                   IIC_fpCMP32, "vcmp", ".f32\t$Sd, $Sm",

 def VCMPEZH : AHuI<0b11101, 0b11, 0b0101, 0b11, 0,
                    (outs), (ins SPR:$Sd),
                    IIC_fpCMP16, "vcmpe", ".f16\t$Sd, #0",
                    []> {
   let Inst{3-0} = 0b0000;
   let Inst{5}   = 0;
 }
 
-// FIXME: Verify encoding after integrated assembler is working.
 def VCMPZD  : ADuI<0b11101, 0b11, 0b0101, 0b01, 0,
                    (outs), (ins DPR:$Dd),
                    IIC_fpCMP64, "vcmp", ".f64\t$Dd, #0",
                    [(arm_cmpfp0 (f64 DPR:$Dd), (i32 0))]> {
   let Inst{3-0} = 0b0000;
   let Inst{5}   = 0;
 }
 
def VCVTSD  : VFPAI<(outs SPR:$Sd), (ins DPR:$Dm), VFPUnaryFrm,
   let Inst{7-6}   = 0b11;
   let Inst{4}     = 0;
 
   let Predicates = [HasVFP2, HasDPVFP];
 }
 
 // Between half, single and double-precision.  For disassembly only.
 
-// FIXME: Verify encoding after integrated assembler is working.
 def VCVTBHS: ASuI<0b11101, 0b11, 0b0010, 0b01, 0, (outs SPR:$Sd), (ins SPR:$Sm),
                  /* FIXME */ IIC_fpCVTSH, "vcvtb", ".f32.f16\t$Sd, $Sm",
                  [/* For disassembly only; pattern left blank */]>,
                  Requires<[HasFP16]>,
              Sched<[WriteFPCVT]>;
 
 def VCVTBSH: ASuI<0b11101, 0b11, 0b0011, 0b01, 0, (outs SPR:$Sd), (ins SPR:$Sm),
                  /* FIXME */ IIC_fpCVTHS, "vcvtb", ".f16.f32\t$Sd, $Sm",
def VTOUIZH : AVConv1IsH_Encode<0b11101, 0b11, 0b1100, 0b1001,
                                  IIC_fpCVTHI, "vcvt", ".u32.f16\t$Sd, $Sm",
                                  []>,
               Sched<[WriteFPCVT]> {
   let Inst{7} = 1; // Z bit
 }
 
 // And the Z bit '0' variants, i.e. use the rounding mode specified by FPSCR.
 let Uses = [FPSCR] in {
-// FIXME: Verify encoding after integrated assembler is working.
 def VTOSIRD : AVConv1IsD_Encode<0b11101, 0b11, 0b1101, 0b1011,
                                 (outs SPR:$Sd), (ins DPR:$Dm),
                                 IIC_fpCVTDI, "vcvtr", ".s32.f64\t$Sd, $Dm",
                                 [(set SPR:$Sd, (int_arm_vcvtr (f64 DPR:$Dm)))]>,
               Sched<[WriteFPCVT]> {
   let Inst{7} = 0; // Z bit
 }
 

test/MC/ARM/simple-fp-encoding.s

 @ CHECK: vmul.f32 s11, s11, s21      @ encoding: [0xaa,0x5a,0x65,0xee]
 
         vnmul.f64       d16, d17, d16
         vnmul.f32       s0, s1, s0
 
 @ CHECK: vnmul.f64 d16, d17, d16     @ encoding: [0xe0,0x0b,0x61,0xee]
 @ CHECK: vnmul.f32 s0, s1, s0        @ encoding: [0xc0,0x0a,0x20,0xee]
 
+        vcmp.f64       d17, d16
+        vcmp.f32       s1, s0
+
+@ CHECK: vcmp.f64  d17, d16        @ encoding: [0x60,0x1b,0xf4,0xee]
+@ CHECK: vcmp.f32  s1, s0          @ encoding: [0x40,0x0a,0xf4,0xee]
+
+        vcmp.f64       d17, #0.0
+        vcmp.f32       s1, #0.0
+
+@ CHECK: vcmp.f64  d17, #0         @ encoding: [0x40,0x1b,0xf5,0xee]
+@ CHECK: vcmp.f32  s1, #0          @ encoding: [0x40,0x0a,0xf5,0xee]
+
         vcmpe.f64       d17, d16
         vcmpe.f32       s1, s0
 
 @ CHECK: vcmpe.f64 d17, d16          @ encoding: [0xe0,0x1b,0xf4,0xee]
 @ CHECK: vcmpe.f32 s1, s0            @ encoding: [0xc0,0x0a,0xf4,0xee]
 
         vcmpe.f64       d16, #0
         vcmpe.f32       s0, #0