File: known-non-zero-opaque-ptrs.ll

package info (click to toggle)
llvm-toolchain-14 1%3A14.0.6-12
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,496,180 kB
  • sloc: cpp: 5,593,972; ansic: 986,872; asm: 585,869; python: 184,223; objc: 72,530; lisp: 31,119; f90: 27,793; javascript: 9,780; pascal: 9,762; sh: 9,482; perl: 7,468; ml: 5,432; awk: 3,523; makefile: 2,538; xml: 953; cs: 573; fortran: 567
file content (51 lines) | stat: -rw-r--r-- 1,565 bytes parent folder | download | duplicates (3)
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
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -instsimplify -opaque-pointers < %s | FileCheck %s

declare void @zero_args()
declare void @two_args(ptr, ptr)

; TODO: Could be non-null based on call-site attributes.
define i1 @test_zero_args_nonnull(ptr %p) {
; CHECK-LABEL: @test_zero_args_nonnull(
; CHECK-NEXT:    call void @zero_args(ptr noundef nonnull [[P:%.*]])
; CHECK-NEXT:    [[C:%.*]] = icmp ne ptr [[P]], null
; CHECK-NEXT:    ret i1 [[C]]
;
  call void @zero_args(ptr nonnull noundef %p)
  %c = icmp ne ptr %p, null
  ret i1 %c
}

define i1 @test_zero_args_maybe_null(ptr %p) {
; CHECK-LABEL: @test_zero_args_maybe_null(
; CHECK-NEXT:    call void @zero_args(ptr [[P:%.*]])
; CHECK-NEXT:    [[C:%.*]] = icmp ne ptr [[P]], null
; CHECK-NEXT:    ret i1 [[C]]
;
  call void @zero_args(ptr %p)
  %c = icmp ne ptr %p, null
  ret i1 %c
}

; TODO: Could be non-null based on call-site attributes.
define i1 @test_two_args_nonnull(ptr %p) {
; CHECK-LABEL: @test_two_args_nonnull(
; CHECK-NEXT:    call void @two_args(ptr noundef nonnull [[P:%.*]])
; CHECK-NEXT:    [[C:%.*]] = icmp ne ptr [[P]], null
; CHECK-NEXT:    ret i1 [[C]]
;
  call void @two_args(ptr nonnull noundef %p)
  %c = icmp ne ptr %p, null
  ret i1 %c
}

define i1 @test_two_args_maybe_null(ptr %p) {
; CHECK-LABEL: @test_two_args_maybe_null(
; CHECK-NEXT:    call void @two_args(ptr [[P:%.*]])
; CHECK-NEXT:    [[C:%.*]] = icmp ne ptr [[P]], null
; CHECK-NEXT:    ret i1 [[C]]
;
  call void @two_args(ptr %p)
  %c = icmp ne ptr %p, null
  ret i1 %c
}