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
|
; RUN: llc < %s -march=arm | FileCheck %s
define i64 @f0(i64 %A, i64 %B) {
; CHECK: f0
; CHECK: movs r3, r3, lsr #1
; CHECK-NEXT: mov r2, r2, rrx
; CHECK-NEXT: subs r0, r0, r2
; CHECK-NEXT: sbc r1, r1, r3
%tmp = bitcast i64 %A to i64
%tmp2 = lshr i64 %B, 1
%tmp3 = sub i64 %tmp, %tmp2
ret i64 %tmp3
}
define i32 @f1(i64 %x, i64 %y) {
; CHECK: f1
; CHECK: mov r0, r0, lsl r2
%a = shl i64 %x, %y
%b = trunc i64 %a to i32
ret i32 %b
}
define i32 @f2(i64 %x, i64 %y) {
; CHECK: f2
; CHECK: mov r0, r0, lsr r2
; CHECK-NEXT: rsb r3, r2, #32
; CHECK-NEXT: subs r2, r2, #32
; CHECK-NEXT: orr r0, r0, r1, lsl r3
; CHECK-NEXT: movge r0, r1, asr r2
%a = ashr i64 %x, %y
%b = trunc i64 %a to i32
ret i32 %b
}
define i32 @f3(i64 %x, i64 %y) {
; CHECK: f3
; CHECK: mov r0, r0, lsr r2
; CHECK-NEXT: rsb r3, r2, #32
; CHECK-NEXT: subs r2, r2, #32
; CHECK-NEXT: orr r0, r0, r1, lsl r3
; CHECK-NEXT: movge r0, r1, lsr r2
%a = lshr i64 %x, %y
%b = trunc i64 %a to i32
ret i32 %b
}
|
