646 lines
14 KiB
C#
646 lines
14 KiB
C#
using System.Reflection.Metadata;
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using Roslyn.Utilities;
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namespace Microsoft.CodeAnalysis.CodeGen;
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internal static class ILOpCodeExtensions
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{
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public static int Size(this ILOpCode opcode)
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{
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if ((int)opcode <= 255)
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{
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return 1;
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}
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return 2;
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}
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public static ILOpCode GetLeaveOpcode(this ILOpCode opcode)
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{
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return opcode switch
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{
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ILOpCode.Br => ILOpCode.Leave,
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ILOpCode.Br_s => ILOpCode.Leave_s,
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_ => throw ExceptionUtilities.UnexpectedValue(opcode),
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};
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}
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public static bool HasVariableStackBehavior(this ILOpCode opcode)
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{
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if (opcode - 40 <= ILOpCode.Ldarg_0 || opcode == ILOpCode.Callvirt || opcode == ILOpCode.Newobj)
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{
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return true;
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}
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return false;
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}
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public static bool IsControlTransfer(this ILOpCode opcode)
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{
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if (opcode.IsBranch())
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{
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return true;
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}
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switch (opcode)
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{
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case ILOpCode.Jmp:
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case ILOpCode.Ret:
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case ILOpCode.Switch:
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case ILOpCode.Throw:
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case ILOpCode.Endfinally:
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case ILOpCode.Endfilter:
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case ILOpCode.Rethrow:
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return true;
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default:
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return false;
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}
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}
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public static bool IsConditionalBranch(this ILOpCode opcode)
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{
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if (opcode - 44 <= ILOpCode.Stloc_1 || opcode - 57 <= ILOpCode.Stloc_1)
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{
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return true;
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}
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return false;
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}
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public static bool IsRelationalBranch(this ILOpCode opcode)
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{
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if (opcode - 46 <= ILOpCode.Ldloc_3 || opcode - 59 <= ILOpCode.Ldloc_3)
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{
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return true;
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}
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return false;
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}
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public static bool CanFallThrough(this ILOpCode opcode)
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{
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switch (opcode)
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{
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case ILOpCode.Jmp:
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case ILOpCode.Ret:
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case ILOpCode.Br_s:
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case ILOpCode.Br:
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case ILOpCode.Throw:
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case ILOpCode.Endfinally:
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case ILOpCode.Leave:
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case ILOpCode.Leave_s:
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case ILOpCode.Rethrow:
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return false;
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default:
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return true;
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}
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}
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public static int NetStackBehavior(this ILOpCode opcode)
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{
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return opcode.StackPushCount() - opcode.StackPopCount();
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}
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public static int StackPopCount(this ILOpCode opcode)
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{
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switch (opcode)
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{
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case ILOpCode.Nop:
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case ILOpCode.Break:
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case ILOpCode.Ldarg_0:
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case ILOpCode.Ldarg_1:
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case ILOpCode.Ldarg_2:
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case ILOpCode.Ldarg_3:
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case ILOpCode.Ldloc_0:
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case ILOpCode.Ldloc_1:
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case ILOpCode.Ldloc_2:
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case ILOpCode.Ldloc_3:
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return 0;
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case ILOpCode.Stloc_0:
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case ILOpCode.Stloc_1:
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case ILOpCode.Stloc_2:
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case ILOpCode.Stloc_3:
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return 1;
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case ILOpCode.Ldarg_s:
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case ILOpCode.Ldarga_s:
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return 0;
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case ILOpCode.Starg_s:
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return 1;
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case ILOpCode.Ldloc_s:
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case ILOpCode.Ldloca_s:
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return 0;
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case ILOpCode.Stloc_s:
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return 1;
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case ILOpCode.Ldnull:
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case ILOpCode.Ldc_i4_m1:
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case ILOpCode.Ldc_i4_0:
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case ILOpCode.Ldc_i4_1:
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case ILOpCode.Ldc_i4_2:
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case ILOpCode.Ldc_i4_3:
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case ILOpCode.Ldc_i4_4:
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case ILOpCode.Ldc_i4_5:
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case ILOpCode.Ldc_i4_6:
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case ILOpCode.Ldc_i4_7:
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case ILOpCode.Ldc_i4_8:
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case ILOpCode.Ldc_i4_s:
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case ILOpCode.Ldc_i4:
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case ILOpCode.Ldc_i8:
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case ILOpCode.Ldc_r4:
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case ILOpCode.Ldc_r8:
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return 0;
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case ILOpCode.Dup:
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case ILOpCode.Pop:
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return 1;
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case ILOpCode.Jmp:
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return 0;
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case ILOpCode.Call:
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case ILOpCode.Calli:
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case ILOpCode.Ret:
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return -1;
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case ILOpCode.Br_s:
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return 0;
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case ILOpCode.Brfalse_s:
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case ILOpCode.Brtrue_s:
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return 1;
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case ILOpCode.Beq_s:
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case ILOpCode.Bge_s:
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case ILOpCode.Bgt_s:
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case ILOpCode.Ble_s:
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case ILOpCode.Blt_s:
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case ILOpCode.Bne_un_s:
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case ILOpCode.Bge_un_s:
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case ILOpCode.Bgt_un_s:
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case ILOpCode.Ble_un_s:
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case ILOpCode.Blt_un_s:
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return 2;
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case ILOpCode.Br:
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return 0;
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case ILOpCode.Brfalse:
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case ILOpCode.Brtrue:
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return 1;
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case ILOpCode.Beq:
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case ILOpCode.Bge:
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case ILOpCode.Bgt:
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case ILOpCode.Ble:
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case ILOpCode.Blt:
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case ILOpCode.Bne_un:
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case ILOpCode.Bge_un:
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case ILOpCode.Bgt_un:
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case ILOpCode.Ble_un:
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case ILOpCode.Blt_un:
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return 2;
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case ILOpCode.Switch:
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case ILOpCode.Ldind_i1:
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case ILOpCode.Ldind_u1:
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case ILOpCode.Ldind_i2:
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case ILOpCode.Ldind_u2:
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case ILOpCode.Ldind_i4:
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case ILOpCode.Ldind_u4:
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case ILOpCode.Ldind_i8:
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case ILOpCode.Ldind_i:
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case ILOpCode.Ldind_r4:
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case ILOpCode.Ldind_r8:
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case ILOpCode.Ldind_ref:
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return 1;
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case ILOpCode.Stind_ref:
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case ILOpCode.Stind_i1:
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case ILOpCode.Stind_i2:
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case ILOpCode.Stind_i4:
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case ILOpCode.Stind_i8:
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case ILOpCode.Stind_r4:
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case ILOpCode.Stind_r8:
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case ILOpCode.Add:
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case ILOpCode.Sub:
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case ILOpCode.Mul:
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case ILOpCode.Div:
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case ILOpCode.Div_un:
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case ILOpCode.Rem:
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case ILOpCode.Rem_un:
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case ILOpCode.And:
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case ILOpCode.Or:
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case ILOpCode.Xor:
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case ILOpCode.Shl:
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case ILOpCode.Shr:
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case ILOpCode.Shr_un:
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return 2;
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case ILOpCode.Neg:
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case ILOpCode.Not:
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case ILOpCode.Conv_i1:
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case ILOpCode.Conv_i2:
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case ILOpCode.Conv_i4:
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case ILOpCode.Conv_i8:
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case ILOpCode.Conv_r4:
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case ILOpCode.Conv_r8:
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case ILOpCode.Conv_u4:
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case ILOpCode.Conv_u8:
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return 1;
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case ILOpCode.Callvirt:
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return -1;
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case ILOpCode.Cpobj:
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return 2;
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case ILOpCode.Ldobj:
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return 1;
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case ILOpCode.Ldstr:
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return 0;
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case ILOpCode.Newobj:
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return -1;
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case ILOpCode.Castclass:
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case ILOpCode.Isinst:
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case ILOpCode.Conv_r_un:
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case ILOpCode.Unbox:
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case ILOpCode.Throw:
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case ILOpCode.Ldfld:
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case ILOpCode.Ldflda:
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return 1;
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case ILOpCode.Stfld:
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return 2;
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case ILOpCode.Ldsfld:
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case ILOpCode.Ldsflda:
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return 0;
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case ILOpCode.Stsfld:
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return 1;
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case ILOpCode.Stobj:
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return 2;
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case ILOpCode.Conv_ovf_i1_un:
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case ILOpCode.Conv_ovf_i2_un:
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case ILOpCode.Conv_ovf_i4_un:
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case ILOpCode.Conv_ovf_i8_un:
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case ILOpCode.Conv_ovf_u1_un:
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case ILOpCode.Conv_ovf_u2_un:
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case ILOpCode.Conv_ovf_u4_un:
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case ILOpCode.Conv_ovf_u8_un:
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case ILOpCode.Conv_ovf_i_un:
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case ILOpCode.Conv_ovf_u_un:
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case ILOpCode.Box:
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case ILOpCode.Newarr:
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case ILOpCode.Ldlen:
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return 1;
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case ILOpCode.Ldelema:
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case ILOpCode.Ldelem_i1:
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case ILOpCode.Ldelem_u1:
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case ILOpCode.Ldelem_i2:
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case ILOpCode.Ldelem_u2:
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case ILOpCode.Ldelem_i4:
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case ILOpCode.Ldelem_u4:
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case ILOpCode.Ldelem_i8:
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case ILOpCode.Ldelem_i:
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case ILOpCode.Ldelem_r4:
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case ILOpCode.Ldelem_r8:
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case ILOpCode.Ldelem_ref:
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return 2;
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case ILOpCode.Stelem_i:
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case ILOpCode.Stelem_i1:
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case ILOpCode.Stelem_i2:
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case ILOpCode.Stelem_i4:
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case ILOpCode.Stelem_i8:
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case ILOpCode.Stelem_r4:
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case ILOpCode.Stelem_r8:
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case ILOpCode.Stelem_ref:
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return 3;
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case ILOpCode.Ldelem:
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return 2;
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case ILOpCode.Stelem:
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return 3;
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case ILOpCode.Unbox_any:
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case ILOpCode.Conv_ovf_i1:
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case ILOpCode.Conv_ovf_u1:
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case ILOpCode.Conv_ovf_i2:
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case ILOpCode.Conv_ovf_u2:
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case ILOpCode.Conv_ovf_i4:
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case ILOpCode.Conv_ovf_u4:
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case ILOpCode.Conv_ovf_i8:
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case ILOpCode.Conv_ovf_u8:
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case ILOpCode.Refanyval:
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case ILOpCode.Ckfinite:
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case ILOpCode.Mkrefany:
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return 1;
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case ILOpCode.Ldtoken:
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return 0;
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case ILOpCode.Conv_u2:
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case ILOpCode.Conv_u1:
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case ILOpCode.Conv_i:
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case ILOpCode.Conv_ovf_i:
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case ILOpCode.Conv_ovf_u:
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return 1;
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case ILOpCode.Add_ovf:
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case ILOpCode.Add_ovf_un:
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case ILOpCode.Mul_ovf:
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case ILOpCode.Mul_ovf_un:
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case ILOpCode.Sub_ovf:
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case ILOpCode.Sub_ovf_un:
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return 2;
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case ILOpCode.Endfinally:
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case ILOpCode.Leave:
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case ILOpCode.Leave_s:
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return 0;
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case ILOpCode.Stind_i:
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return 2;
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case ILOpCode.Conv_u:
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return 1;
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case ILOpCode.Arglist:
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return 0;
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case ILOpCode.Ceq:
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case ILOpCode.Cgt:
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case ILOpCode.Cgt_un:
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case ILOpCode.Clt:
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case ILOpCode.Clt_un:
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return 2;
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case ILOpCode.Ldftn:
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return 0;
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case ILOpCode.Ldvirtftn:
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return 1;
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case ILOpCode.Ldarg:
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case ILOpCode.Ldarga:
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return 0;
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case ILOpCode.Starg:
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return 1;
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case ILOpCode.Ldloc:
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case ILOpCode.Ldloca:
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return 0;
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case ILOpCode.Stloc:
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case ILOpCode.Localloc:
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case ILOpCode.Endfilter:
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return 1;
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case ILOpCode.Unaligned:
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case ILOpCode.Volatile:
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case ILOpCode.Tail:
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return 0;
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case ILOpCode.Initobj:
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return 1;
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case ILOpCode.Constrained:
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return 0;
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case ILOpCode.Cpblk:
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case ILOpCode.Initblk:
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return 3;
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case ILOpCode.Rethrow:
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case ILOpCode.Sizeof:
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return 0;
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case ILOpCode.Refanytype:
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return 1;
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case ILOpCode.Readonly:
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return 0;
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default:
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throw ExceptionUtilities.UnexpectedValue(opcode);
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}
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}
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public static int StackPushCount(this ILOpCode opcode)
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{
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switch (opcode)
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{
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case ILOpCode.Nop:
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case ILOpCode.Break:
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return 0;
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case ILOpCode.Ldarg_0:
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case ILOpCode.Ldarg_1:
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case ILOpCode.Ldarg_2:
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case ILOpCode.Ldarg_3:
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case ILOpCode.Ldloc_0:
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case ILOpCode.Ldloc_1:
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case ILOpCode.Ldloc_2:
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case ILOpCode.Ldloc_3:
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return 1;
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case ILOpCode.Stloc_0:
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case ILOpCode.Stloc_1:
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case ILOpCode.Stloc_2:
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case ILOpCode.Stloc_3:
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return 0;
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case ILOpCode.Ldarg_s:
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case ILOpCode.Ldarga_s:
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return 1;
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case ILOpCode.Starg_s:
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return 0;
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case ILOpCode.Ldloc_s:
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case ILOpCode.Ldloca_s:
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return 1;
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case ILOpCode.Stloc_s:
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return 0;
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case ILOpCode.Ldnull:
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case ILOpCode.Ldc_i4_m1:
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case ILOpCode.Ldc_i4_0:
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case ILOpCode.Ldc_i4_1:
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case ILOpCode.Ldc_i4_2:
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case ILOpCode.Ldc_i4_3:
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case ILOpCode.Ldc_i4_4:
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case ILOpCode.Ldc_i4_5:
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case ILOpCode.Ldc_i4_6:
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case ILOpCode.Ldc_i4_7:
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case ILOpCode.Ldc_i4_8:
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case ILOpCode.Ldc_i4_s:
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case ILOpCode.Ldc_i4:
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case ILOpCode.Ldc_i8:
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case ILOpCode.Ldc_r4:
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case ILOpCode.Ldc_r8:
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return 1;
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case ILOpCode.Dup:
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return 2;
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case ILOpCode.Pop:
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case ILOpCode.Jmp:
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return 0;
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case ILOpCode.Call:
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case ILOpCode.Calli:
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return -1;
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case ILOpCode.Ret:
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case ILOpCode.Br_s:
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case ILOpCode.Brfalse_s:
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case ILOpCode.Brtrue_s:
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case ILOpCode.Beq_s:
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case ILOpCode.Bge_s:
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case ILOpCode.Bgt_s:
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case ILOpCode.Ble_s:
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case ILOpCode.Blt_s:
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case ILOpCode.Bne_un_s:
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case ILOpCode.Bge_un_s:
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case ILOpCode.Bgt_un_s:
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case ILOpCode.Ble_un_s:
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case ILOpCode.Blt_un_s:
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case ILOpCode.Br:
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case ILOpCode.Brfalse:
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case ILOpCode.Brtrue:
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case ILOpCode.Beq:
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case ILOpCode.Bge:
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case ILOpCode.Bgt:
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case ILOpCode.Ble:
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case ILOpCode.Blt:
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case ILOpCode.Bne_un:
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case ILOpCode.Bge_un:
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case ILOpCode.Bgt_un:
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case ILOpCode.Ble_un:
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case ILOpCode.Blt_un:
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case ILOpCode.Switch:
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return 0;
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case ILOpCode.Ldind_i1:
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case ILOpCode.Ldind_u1:
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case ILOpCode.Ldind_i2:
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case ILOpCode.Ldind_u2:
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case ILOpCode.Ldind_i4:
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case ILOpCode.Ldind_u4:
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case ILOpCode.Ldind_i8:
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case ILOpCode.Ldind_i:
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case ILOpCode.Ldind_r4:
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case ILOpCode.Ldind_r8:
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case ILOpCode.Ldind_ref:
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return 1;
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case ILOpCode.Stind_ref:
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case ILOpCode.Stind_i1:
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case ILOpCode.Stind_i2:
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case ILOpCode.Stind_i4:
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case ILOpCode.Stind_i8:
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case ILOpCode.Stind_r4:
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case ILOpCode.Stind_r8:
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return 0;
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case ILOpCode.Add:
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case ILOpCode.Sub:
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case ILOpCode.Mul:
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case ILOpCode.Div:
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case ILOpCode.Div_un:
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case ILOpCode.Rem:
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case ILOpCode.Rem_un:
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case ILOpCode.And:
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case ILOpCode.Or:
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case ILOpCode.Xor:
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case ILOpCode.Shl:
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case ILOpCode.Shr:
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case ILOpCode.Shr_un:
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case ILOpCode.Neg:
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case ILOpCode.Not:
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case ILOpCode.Conv_i1:
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case ILOpCode.Conv_i2:
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case ILOpCode.Conv_i4:
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case ILOpCode.Conv_i8:
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case ILOpCode.Conv_r4:
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case ILOpCode.Conv_r8:
|
|
case ILOpCode.Conv_u4:
|
|
case ILOpCode.Conv_u8:
|
|
return 1;
|
|
case ILOpCode.Callvirt:
|
|
return -1;
|
|
case ILOpCode.Cpobj:
|
|
return 0;
|
|
case ILOpCode.Ldobj:
|
|
case ILOpCode.Ldstr:
|
|
case ILOpCode.Newobj:
|
|
case ILOpCode.Castclass:
|
|
case ILOpCode.Isinst:
|
|
case ILOpCode.Conv_r_un:
|
|
case ILOpCode.Unbox:
|
|
return 1;
|
|
case ILOpCode.Throw:
|
|
return 0;
|
|
case ILOpCode.Ldfld:
|
|
case ILOpCode.Ldflda:
|
|
return 1;
|
|
case ILOpCode.Stfld:
|
|
return 0;
|
|
case ILOpCode.Ldsfld:
|
|
case ILOpCode.Ldsflda:
|
|
return 1;
|
|
case ILOpCode.Stsfld:
|
|
case ILOpCode.Stobj:
|
|
return 0;
|
|
case ILOpCode.Conv_ovf_i1_un:
|
|
case ILOpCode.Conv_ovf_i2_un:
|
|
case ILOpCode.Conv_ovf_i4_un:
|
|
case ILOpCode.Conv_ovf_i8_un:
|
|
case ILOpCode.Conv_ovf_u1_un:
|
|
case ILOpCode.Conv_ovf_u2_un:
|
|
case ILOpCode.Conv_ovf_u4_un:
|
|
case ILOpCode.Conv_ovf_u8_un:
|
|
case ILOpCode.Conv_ovf_i_un:
|
|
case ILOpCode.Conv_ovf_u_un:
|
|
case ILOpCode.Box:
|
|
case ILOpCode.Newarr:
|
|
case ILOpCode.Ldlen:
|
|
case ILOpCode.Ldelema:
|
|
case ILOpCode.Ldelem_i1:
|
|
case ILOpCode.Ldelem_u1:
|
|
case ILOpCode.Ldelem_i2:
|
|
case ILOpCode.Ldelem_u2:
|
|
case ILOpCode.Ldelem_i4:
|
|
case ILOpCode.Ldelem_u4:
|
|
case ILOpCode.Ldelem_i8:
|
|
case ILOpCode.Ldelem_i:
|
|
case ILOpCode.Ldelem_r4:
|
|
case ILOpCode.Ldelem_r8:
|
|
case ILOpCode.Ldelem_ref:
|
|
return 1;
|
|
case ILOpCode.Stelem_i:
|
|
case ILOpCode.Stelem_i1:
|
|
case ILOpCode.Stelem_i2:
|
|
case ILOpCode.Stelem_i4:
|
|
case ILOpCode.Stelem_i8:
|
|
case ILOpCode.Stelem_r4:
|
|
case ILOpCode.Stelem_r8:
|
|
case ILOpCode.Stelem_ref:
|
|
return 0;
|
|
case ILOpCode.Ldelem:
|
|
return 1;
|
|
case ILOpCode.Stelem:
|
|
return 0;
|
|
case ILOpCode.Unbox_any:
|
|
case ILOpCode.Conv_ovf_i1:
|
|
case ILOpCode.Conv_ovf_u1:
|
|
case ILOpCode.Conv_ovf_i2:
|
|
case ILOpCode.Conv_ovf_u2:
|
|
case ILOpCode.Conv_ovf_i4:
|
|
case ILOpCode.Conv_ovf_u4:
|
|
case ILOpCode.Conv_ovf_i8:
|
|
case ILOpCode.Conv_ovf_u8:
|
|
case ILOpCode.Refanyval:
|
|
case ILOpCode.Ckfinite:
|
|
case ILOpCode.Mkrefany:
|
|
case ILOpCode.Ldtoken:
|
|
case ILOpCode.Conv_u2:
|
|
case ILOpCode.Conv_u1:
|
|
case ILOpCode.Conv_i:
|
|
case ILOpCode.Conv_ovf_i:
|
|
case ILOpCode.Conv_ovf_u:
|
|
case ILOpCode.Add_ovf:
|
|
case ILOpCode.Add_ovf_un:
|
|
case ILOpCode.Mul_ovf:
|
|
case ILOpCode.Mul_ovf_un:
|
|
case ILOpCode.Sub_ovf:
|
|
case ILOpCode.Sub_ovf_un:
|
|
return 1;
|
|
case ILOpCode.Endfinally:
|
|
case ILOpCode.Leave:
|
|
case ILOpCode.Leave_s:
|
|
case ILOpCode.Stind_i:
|
|
return 0;
|
|
case ILOpCode.Conv_u:
|
|
case ILOpCode.Arglist:
|
|
case ILOpCode.Ceq:
|
|
case ILOpCode.Cgt:
|
|
case ILOpCode.Cgt_un:
|
|
case ILOpCode.Clt:
|
|
case ILOpCode.Clt_un:
|
|
case ILOpCode.Ldftn:
|
|
case ILOpCode.Ldvirtftn:
|
|
case ILOpCode.Ldarg:
|
|
case ILOpCode.Ldarga:
|
|
return 1;
|
|
case ILOpCode.Starg:
|
|
return 0;
|
|
case ILOpCode.Ldloc:
|
|
case ILOpCode.Ldloca:
|
|
return 1;
|
|
case ILOpCode.Stloc:
|
|
return 0;
|
|
case ILOpCode.Localloc:
|
|
return 1;
|
|
case ILOpCode.Endfilter:
|
|
case ILOpCode.Unaligned:
|
|
case ILOpCode.Volatile:
|
|
case ILOpCode.Tail:
|
|
case ILOpCode.Initobj:
|
|
case ILOpCode.Constrained:
|
|
case ILOpCode.Cpblk:
|
|
case ILOpCode.Initblk:
|
|
case ILOpCode.Rethrow:
|
|
return 0;
|
|
case ILOpCode.Sizeof:
|
|
case ILOpCode.Refanytype:
|
|
return 1;
|
|
case ILOpCode.Readonly:
|
|
return 0;
|
|
default:
|
|
throw ExceptionUtilities.UnexpectedValue(opcode);
|
|
}
|
|
}
|
|
}
|