8 registers, 22 instructions:
0	r0 = uniform32 ptr0 0
1	r1 = uniform32 ptr0 C
2	r0 = trunc r0
3	r1 = mul_i32 r0 r1
4	r0 = splat 1 (1.4012985e-45)
5	r2 = splat 2 (2.8025969e-45)
6	r3 = splat 3 (4.2038954e-45)
loop:
7	    r4 = index
8	    r4 = trunc r4
9	    r4 = add_i32 r4 r1
10	    r4 = shl_i32 r4 2
11	    r5 = gather32 ptr0 4 r4
12	    r6 = add_i32 r4 r0
13	    r6 = gather32 ptr0 4 r6
14	    r7 = add_i32 r4 r2
15	    r7 = gather32 ptr0 4 r7
16	    r4 = add_i32 r4 r3
17	    r4 = gather32 ptr0 4 r4
18	    store32 ptr1 r5
19	    store32 ptr2 r6
20	    store32 ptr3 r7
21	    store32 ptr4 r4