File: rbit.ll

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
file content (32 lines) | stat: -rw-r--r-- 613 bytes parent folder | download | duplicates (27) 
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
 
; RUN: llc -mtriple=armv8-eabi %s -o - | FileCheck %s

; CHECK-LABEL: rbit
; CHECK: rbit r0, r0
define i32 @rbit(i32 %t) {
entry:
  %rbit = call i32 @llvm.arm.rbit(i32 %t)
  ret i32 %rbit
}

; CHECK-LABEL: rbit_constant
; CHECK: mov r0, #0
; CHECK-NOT: rbit
; CHECK: bx lr
define i32 @rbit_constant() {
entry:
  %rbit.i = call i32 @llvm.arm.rbit(i32 0)
  ret i32 %rbit.i
}

declare i32 @llvm.arm.rbit(i32)

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

; CHECK-LABEL: rbit_generic
; CHECK: rbit r0, r0
define i32 @rbit_generic(i32 %t) {
entry:
  %rbit = call i32 @llvm.bitreverse.i32(i32 %t)
  ret i32 %rbit
}