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From: <sv...@va...> - 2017-01-15 18:25:26
|
Author: sewardj
Date: Sun Jan 15 18:25:18 2017
New Revision: 3294
Log:
Implement VRINTX.F64.F64 d_d, VRINTX.F32.F32 s_s.
Modified:
trunk/priv/guest_arm_toIR.c
Modified: trunk/priv/guest_arm_toIR.c
==============================================================================
--- trunk/priv/guest_arm_toIR.c (original)
+++ trunk/priv/guest_arm_toIR.c Sun Jan 15 18:25:18 2017
@@ -13709,6 +13709,49 @@
return True;
}
+ /* ----------- VRINTX.F64.F64 d_d, VRINTX.F32.F32 s_s ----------- */
+ /* 31 27 22 21 15 11 8 7 5 4 3
+ T1: 1110 11101 D 110111 Vd 101 1 01 M 0 Vm VRINTX<c>.F64.F64 Dd, Dm
+ A1: cond 11101 D 110111 Vd 101 1 01 M 0 Vm
+
+ T1: 1110 11101 D 110111 Vd 101 0 01 M 0 Vm VRINTX<c>.F32.F32 Dd, Dm
+ A1: cond 11101 D 110111 Vd 101 0 01 M 0 Vm
+
+ Like VRINT{Z,R}{.F64.F64, .F32.F32} just above, this can be conditional.
+ This produces the same code as the VRINTR case since we ignore the
+ requirement to signal inexactness.
+ */
+ if ((isT ? (INSN(31,28) == BITS4(1,1,1,0)) : True)
+ && INSN(27,23) == BITS5(1,1,1,0,1) && INSN(21,16) == BITS6(1,1,0,1,1,1)
+ && INSN(11,9) == BITS3(1,0,1) && INSN(7,6) == BITS2(0,1)
+ && INSN(4,4) == 0) {
+ UInt bit_D = INSN(22,22);
+ UInt fld_Vd = INSN(15,12);
+ Bool isF64 = INSN(8,8) == 1;
+ UInt bit_M = INSN(5,5);
+ UInt fld_Vm = INSN(3,0);
+ UInt dd = isF64 ? ((bit_D << 4) | fld_Vd) : ((fld_Vd << 1) | bit_D);
+ UInt mm = isF64 ? ((bit_M << 4) | fld_Vm) : ((fld_Vm << 1) | bit_M);
+
+ if (isT) vassert(condT != IRTemp_INVALID);
+ IRType ty = isF64 ? Ity_F64 : Ity_F32;
+ IRTemp src = newTemp(ty);
+ IRTemp res = newTemp(ty);
+ assign(src, (isF64 ? getDReg : getFReg)(mm));
+
+ IRTemp rm = newTemp(Ity_I32);
+ assign(rm, mkexpr(mk_get_IR_rounding_mode()));
+ assign(res, binop(isF64 ? Iop_RoundF64toInt : Iop_RoundF32toInt,
+ mkexpr(rm), mkexpr(src)));
+ (isF64 ? putDReg : putFReg)(dd, mkexpr(res), condT);
+
+ UChar rch = isF64 ? 'd' : 'f';
+ DIP("vrint%c.%s.%s %c%u, %c%u\n",
+ 'x',
+ isF64 ? "f64" : "f32", isF64 ? "f64" : "f32", rch, dd, rch, mm);
+ return True;
+ }
+
/* ---------- Doesn't match anything. ---------- */
return False;
|