File: bswap-01.ll

package info (click to toggle)
llvm-toolchain-13 1%3A13.0.1-11
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,418,840 kB
  • sloc: cpp: 5,290,826; ansic: 996,570; asm: 544,593; python: 188,212; objc: 72,027; lisp: 30,291; f90: 25,395; sh: 24,898; javascript: 9,780; pascal: 9,398; perl: 7,484; ml: 5,432; awk: 3,523; makefile: 2,913; xml: 953; cs: 573; fortran: 539
file content (24 lines) | stat: -rw-r--r-- 583 bytes parent folder | download | duplicates (37) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 
; Test byteswaps between registers.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s

declare i32 @llvm.bswap.i32(i32 %a)
declare i64 @llvm.bswap.i64(i64 %a)

; Check 32-bit register-to-register byteswaps.
define i32 @f1(i32 %a) {
; CHECK-LABEL: f1:
; CHECK: lrvr [[REGISTER:%r[0-5]]], %r2
; CHECK: br %r14
  %swapped = call i32 @llvm.bswap.i32(i32 %a)
  ret i32 %swapped
}

; Check 64-bit register-to-register byteswaps.
define i64 @f2(i64 %a) {
; CHECK-LABEL: f2:
; CHECK: lrvgr %r2, %r2
; CHECK: br %r14
  %swapped = call i64 @llvm.bswap.i64(i64 %a)
  ret i64 %swapped
}