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
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt %s -simplifycfg -instcombine -S | FileCheck %s
define i32 @assume1(i32 %p) {
; CHECK-LABEL: @assume1(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[P:%.*]], 0
; CHECK-NEXT: call void @llvm.assume(i1 [[CMP]])
; CHECK-NEXT: ret i32 [[P]]
;
entry:
%cmp = icmp sle i32 %p, 0
br i1 %cmp, label %if.then, label %if.end
if.then:
unreachable
if.end:
%call = call i32 @abs(i32 %p)
ret i32 %call
}
define i32 @assume2(i32 %p) {
; CHECK-LABEL: @assume2(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[P:%.*]], 0
; CHECK-NEXT: call void @llvm.assume(i1 [[CMP]])
; CHECK-NEXT: ret i32 [[P]]
;
entry:
%cmp = icmp sgt i32 %p, 0
br i1 %cmp, label %if.then, label %if.else
if.then:
br label %if.end
if.else:
unreachable
if.end:
%call = call i32 @abs(i32 %p)
ret i32 %call
}
declare i32 @abs(i32)
|
