File: snippet.s

package info (click to toggle)
llvm-toolchain-14 1%3A14.0.6-12
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,496,180 kB
  • sloc: cpp: 5,593,972; ansic: 986,872; asm: 585,869; python: 184,223; objc: 72,530; lisp: 31,119; f90: 27,793; javascript: 9,780; pascal: 9,762; sh: 9,482; perl: 7,468; ml: 5,432; awk: 3,523; makefile: 2,538; xml: 953; cs: 573; fortran: 567
file content (32 lines) | stat: -rw-r--r-- 1,477 bytes parent folder | download | duplicates (8)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
## A snippet from https://github.com/riscv/riscv-v-spec.

# RUN: llvm-mc -triple=riscv64 -filetype=obj --mattr=+v < %s \
# RUN:   | llvm-objdump -d --mattr=+v - \
# RUN:   | FileCheck %s --check-prefix=CHECK-INST

loop:
    vsetvli a3, a0, e16,m4,ta,ma  # vtype = 16-bit integer vectors
# CHECK-INST: d7 76 a5 0c    vsetvli a3, a0, e16, m4, ta, ma
    vle16.v v4, (a1)              # Get 16b vector
# CHECK-INST: 07 d2 05 02    vle16.v   v4, (a1)
    slli t1, a3, 1                # Multiply length by two bytes/element
# CHECK-INST: 13 93 16 00    slli    t1, a3, 1
    add a1, a1, t1                # Bump pointer
# CHECK-INST: b3 85 65 00    add     a1, a1, t1
    vwmul.vx v8, v4, x10          # 32b in <v8--v15>
# CHECK-INST: 57 64 45 ee    vwmul.vx        v8, v4, a0

    vsetvli x0, a0, e32,m8,ta,ma  # Operate on 32b values
# CHECK-INST: 57 70 35 0d    vsetvli zero, a0, e32, m8, ta, ma
    vsrl.vi v8, v8, 3
# CHECK-INST: 57 b4 81 a2    vsrl.vi v8, v8, 3
    vse32.v v8, (a2)              # Store vector of 32b
# CHECK-INST: 27 64 06 02    vse32.v   v8, (a2)
    slli t1, a3, 2                # Multiply length by four bytes/element
# CHECK-INST: 13 93 26 00    slli    t1, a3, 2
    add a2, a2, t1                # Bump pointer
# CHECK-INST: 33 06 66 00    add     a2, a2, t1
    sub a0, a0, a3                # Decrement count
# CHECK-INST: 33 05 d5 40    sub     a0, a0, a3
    bnez a0, loop                 # Any more?
# CHECK-INST: e3 1a 05 fc    bnez    a0, 0x0