Make the right description of integer into float point value insns.
* The result of comparison insn is a 64-bit integer value, so the result operand should be of integer type
| Insn Code | Nops | Description |
- |--------------------------------------|-----:|----------------------------------------------------------------|
+ |--------------------------------------|-----:|-----------------------------------------------------------------|
| `MIR_F2I`, `MIR_D2I`, `MIR_LD2I` | 2 | transforming floating point value into 64-bit integer |
| `MIR_F2D` | 2 | transforming single to double precision FP value |
| `MIR_F2LD` | 2 | transforming single precision to long double FP value |
| `MIR_D2LD` | 2 | transforming double precision to long double FP value |
| `MIR_LD2F` | 2 | transforming long double to single precision FP value |
| `MIR_LD2D` | 2 | transforming long double to double precision FP value |
- | `MIR_I2F`, `MIR_I2D`, `MIR_I2LD` | 2 | transforming floating point value into 64-bit integer |
- | `MIR_UI2F`, `MIR_UI2D`, `MIR_UI2LD` | 2 | transforming floating point value into unsigned 64-bit integer |
+ | `MIR_I2F`, `MIR_I2D`, `MIR_I2LD` | 2 | transforming 64-bit integer into a floating point value |
+ | `MIR_UI2F`, `MIR_UI2D`, `MIR_UI2LD` | 2 | transforming unsigned 64-bit integer into a floating point value|
| `MIR_FNEG`, `MIR_DNEG`, `MIR_LDNEG` | 2 | changing sign of floating point value |
| `MIR_FADD`, `MIR_FSUB` | 3 | **single** precision addition and subtraction |
| `MIR_DADD`, `MIR_DSUB` | 3 | **double** precision addition and subtraction |
