ptx-90-parser 0.2.1

Parse NVIDIA PTX 9.0 assembly into a structured AST and explore modules via a CLI.
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### Description

Store the maximum of a and b in d.
For .u16x2, .s16x2 instruction types, forms input vectors by half word values from source
operands. Half-word operands are then processed in parallel to produce .u16x2, .s16x2 result
in destination.
Operands d, a and b have the same type as the instruction type. For instruction types
.u16x2, .s16x2, operands d, a and b have type .b32.

### Syntax

```
max.atype         d, a, b;
max{.relu}.btype  d, a, b;

.atype = { .u16, .u32, .u64,
           .u16x2, .s16, .s64 };
.btype = { .s16x2, .s32 };
```

### Semantics

```
if (type == u16x2 || type == s16x2) {
    iA[0] = a[0:15];
    iA[1] = a[16:31];
    iB[0] = b[0:15];
    iB[1] = b[16:31];
    for (i = 0; i < 2; i++) {
         d[i] = (iA[i] > iB[i]) ? iA[i] : iB[i];
    }
} else {
    d = (a > b) ? a : b; // Integer (signed and unsigned)
}
```

### Examples

```
max.u32  d,a,b;
max.s32  q,q,0;
max.relu.s16x2 t,t,u;
```