zext-divrem.ll
1.25 KB
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
; RUN: opt -analyze -enable-new-pm=0 -scalar-evolution -S < %s | FileCheck %s
; RUN: opt -disable-output "-passes=print<scalar-evolution>" -S < %s 2>&1 | FileCheck %s
define i64 @test1(i32 %a, i32 %b) {
; CHECK-LABEL: @test1
%div = udiv i32 %a, %b
%zext = zext i32 %div to i64
; CHECK: %zext
; CHECK-NEXT: --> ((zext i32 %a to i64) /u (zext i32 %b to i64))
ret i64 %zext
}
define i64 @test2(i32 %a, i32 %b) {
; CHECK-LABEL: @test2
%rem = urem i32 %a, %b
%zext = zext i32 %rem to i64
; CHECK: %zext
; CHECK-NEXT: --> ((zext i32 %a to i64) + (-1 * (zext i32 %b to i64) * ((zext i32 %a to i64) /u (zext i32 %b to i64))))
ret i64 %zext
}
define i64 @test3(i32 %a, i32 %b) {
; CHECK-LABEL: @test3
%div = udiv i32 %a, %b
%mul = mul i32 %div, %b
%sub = sub i32 %a, %mul
%zext = zext i32 %sub to i64
; CHECK: %zext
; CHECK-NEXT: --> ((zext i32 %a to i64) + (-1 * (zext i32 %b to i64) * ((zext i32 %a to i64) /u (zext i32 %b to i64))))
ret i64 %zext
}
define i64 @test4(i32 %t) {
; CHECK-LABEL: @test4
%a = udiv i32 %t, 2
%div = udiv i32 %t, 112
%mul = mul i32 %div, 56
%sub = sub i32 %a, %mul
%zext = zext i32 %sub to i64
; CHECK: %zext
; CHECK-NEXT: --> ((-56 * ((zext i32 %t to i64) /u 112)) + ((zext i32 %t to i64) /u 2))
ret i64 %zext
}