File: cmp-const-max.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 (36 lines) | stat: -rw-r--r-- 820 bytes parent folder | download | duplicates (18) 
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
 
; RUN: llc -verify-machineinstrs -aarch64-enable-atomic-cfg-tidy=0 < %s -mtriple=aarch64-none-eabihf -fast-isel=false | FileCheck %s


define i32 @ule_64_max(i64 %p) {
entry:
; CHECK-LABEL: ule_64_max:
; CHECK: cmn x0, #1
; CHECK: b.hi [[RET_ZERO:.LBB[0-9]+_[0-9]+]]
  %cmp = icmp ule i64 %p, 18446744073709551615 ; 0xffffffffffffffff
  br i1 %cmp, label %ret_one, label %ret_zero

ret_one:
  ret i32 1

ret_zero:
; CHECK: [[RET_ZERO]]:
; CHECK-NEXT: mov w0, wzr
  ret i32 0
}

define i32 @ugt_64_max(i64 %p) {
entry:
; CHECK-LABEL: ugt_64_max:
; CHECK: cmn x0, #1
; CHECK: b.ls [[RET_ZERO:.LBB[0-9]+_[0-9]+]]
  %cmp = icmp ugt i64 %p, 18446744073709551615 ; 0xffffffffffffffff
  br i1 %cmp, label %ret_one, label %ret_zero

ret_one:
  ret i32 1

ret_zero:
; CHECK: [[RET_ZERO]]:
; CHECK-NEXT: mov w0, wzr
  ret i32 0
}