File: bitreverse.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 (70 lines) | stat: -rw-r--r-- 1,722 bytes parent folder | download | duplicates (13)
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
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -S -passes=instsimplify | FileCheck %s

declare i32 @llvm.bitreverse.i32(i32)
declare <2 x i32> @llvm.bitreverse.v2i32(<2 x i32>)

define i1 @test1(i32 %arg) {
; CHECK-LABEL: @test1(
; CHECK-NEXT:    ret i1 false
;
  %a = or i32 %arg, 1
  %b = call i32 @llvm.bitreverse.i32(i32 %a)
  %res = icmp eq i32 %b, 0
  ret i1 %res
}

define i1 @test1v(<2 x i32> %arg) {
; CHECK-LABEL: @test1v(
; CHECK-NEXT:    ret i1 false
;
  %a = or <2 x i32> %arg, <i32 1, i32 0>
  %b = call <2 x i32> @llvm.bitreverse.v2i32(<2 x i32> %a)
  %c = extractelement <2 x i32> %b, i32 0
  %res = icmp eq i32 %c, 0
  ret i1 %res
}

define i1 @test2(i32 %arg) {
; CHECK-LABEL: @test2(
; CHECK-NEXT:    ret i1 false
;
  %a = or i32 %arg, 1024
  %b = call i32 @llvm.bitreverse.i32(i32 %a)
  %res = icmp eq i32 %b, 0
  ret i1 %res
}

define i1 @test2v(<2 x i32> %arg) {
; CHECK-LABEL: @test2v(
; CHECK-NEXT:    ret i1 false
;
  %a = or <2 x i32> %arg, <i32 0, i32 1024>
  %b = call <2 x i32> @llvm.bitreverse.v2i32(<2 x i32> %a)
  %c = extractelement <2 x i32> %b, i32 1
  %res = icmp eq i32 %c, 0
  ret i1 %res
}

define i1 @test3(i32 %arg) {
; CHECK-LABEL: @test3(
; CHECK-NEXT:    ret i1 false
;
  %a = and i32 %arg, 1
  %b = call i32 @llvm.bitreverse.i32(i32 %a)
  %and = and i32 %b, 1
  %res = icmp eq i32 %and, 1
  ret i1 %res
}

define i1 @test3v(<2 x i32> %arg) {
; CHECK-LABEL: @test3v(
; CHECK-NEXT:    ret i1 false
;
  %a = and <2 x i32> %arg, <i32 1, i32 -1>
  %b = call <2 x i32> @llvm.bitreverse.v2i32(<2 x i32> %a)
  %and = and <2 x i32> %b, <i32 1, i32 -1>
  %ext = extractelement <2 x i32> %and, i32 0
  %res = icmp eq i32 %ext, 1
  ret i1 %res
}