File: rbit.ll

package info (click to toggle)
llvm-toolchain-16 1%3A16.0.6-15~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,634,792 kB
  • sloc: cpp: 6,179,261; ansic: 1,216,205; asm: 741,319; python: 196,614; objc: 75,325; f90: 49,640; lisp: 32,396; pascal: 12,286; sh: 9,394; perl: 7,442; ml: 5,494; awk: 3,523; makefile: 2,723; javascript: 1,206; xml: 886; fortran: 581; cs: 573
file content (42 lines) | stat: -rw-r--r-- 969 bytes parent folder | download | duplicates (21)
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
33
34
35
36
37
38
39
40
41
42
; RUN: llc -mtriple=aarch64-eabi %s -o - | FileCheck %s

; The llvm.aarch64.rbit intrinsic should be auto-upgraded to the
; target-independent bitreverse intrinsic.

; CHECK-LABEL: rbit32
; CHECK: rbit w0, w0
define i32 @rbit32(i32 %t) {
entry:
  %rbit.i = call i32 @llvm.aarch64.rbit.i32(i32 %t)
  ret i32 %rbit.i
}

; CHECK-LABEL: rbit64
; CHECK: rbit x0, x0
define i64 @rbit64(i64 %t) {
entry:
  %rbit.i = call i64 @llvm.aarch64.rbit.i64(i64 %t)
  ret i64 %rbit.i
}

declare i64 @llvm.aarch64.rbit.i64(i64)
declare i32 @llvm.aarch64.rbit.i32(i32)

; CHECK-LABEL: rbit_generic32
; CHECK: rbit w0, w0
define i32 @rbit_generic32(i32 %t) {
entry:
  %rbit = call i32 @llvm.bitreverse.i32(i32 %t)
  ret i32 %rbit
}

; CHECK-LABEL: rbit_generic64
; CHECK: rbit x0, x0
define i64 @rbit_generic64(i64 %t) {
entry:
  %rbit = call i64 @llvm.bitreverse.i64(i64 %t)
  ret i64 %rbit
}

declare i32 @llvm.bitreverse.i32(i32) readnone
declare i64 @llvm.bitreverse.i64(i64) readnone