File: rbit.ll

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (32 lines) | stat: -rw-r--r-- 613 bytes parent folder | download | duplicates (29) 
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
}