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
71
72
|
; RUN: llc -mtriple=arm-eabi %s -o - | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-V4
; RUN: llc -mtriple=armv6-eabi %s -o - | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-V6
; RUN: llc -mtriple=armv7-eabi %s -o - | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-V6
; RUN: llc -mtriple=thumb-eabi %s -o - | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-THUMB
; RUN: llc -mtriple=thumbv6-eabi %s -o - | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-THUMBV6
; RUN: llc -mtriple=thumbv6t2-eabi %s -o - | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-THUMBV6T2
; RUN: llc -mtriple=thumbv7-eabi %s -o - | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-THUMBV6T2
define i32 @Test0(i32 %a, i32 %b, i32 %c) nounwind readnone ssp {
entry:
; CHECK-LABEL: Test0
; CHECK-NOT: smmls
%conv4 = zext i32 %a to i64
%conv1 = sext i32 %b to i64
%conv2 = sext i32 %c to i64
%mul = mul nsw i64 %conv2, %conv1
%shr5 = lshr i64 %mul, 32
%sub = sub nsw i64 %conv4, %shr5
%conv3 = trunc i64 %sub to i32
ret i32 %conv3
}
define i32 @Test1(i32 %a, i32 %b, i32 %c) {
;CHECK-LABEL: Test1
;CHECK-V4-NOT: smmls
;CHECK-THUMB-NOT: smmls
;CHECK-THUMBV6-NOT: smmls
;CHECK-V6: smmls r0, [[Rn:r[1-2]]], [[Rm:r[1-2]]], r0
;CHECK-THUMBV6T2: smmls r0, [[Rn:r[1-2]]], [[Rm:r[1-2]]], r0
entry:
%conv = sext i32 %b to i64
%conv1 = sext i32 %c to i64
%mul = mul nsw i64 %conv1, %conv
%conv26 = zext i32 %a to i64
%shl = shl nuw i64 %conv26, 32
%sub = sub nsw i64 %shl, %mul
%shr7 = lshr i64 %sub, 32
%conv3 = trunc i64 %shr7 to i32
ret i32 %conv3
}
declare void @opaque(i32)
define void @test_used_flags(i32 %in1, i32 %in2) {
; CHECK-LABEL: test_used_flags:
; CHECK-THUMB: cmp r1, #0
; CHECK-THUMB: push {r2}
; CHECK-THUMB: pop {r3}
; CHECK-THUMB: ble
; CHECK-THUMBV6: cmp r1, #0
; CHECK-THUMBV6: mov r3, r2
; CHECK-THUMBV6: ble
; CHECK-V6: smull [[PROD_LO:r[0-9]+]], [[PROD_HI:r[0-9]+]], r0, r1
; CHECK-V6: rsbs {{.*}}, [[PROD_LO]], #0
; CHECK-V6: rscs {{.*}}, [[PROD_HI]], #0
; CHECK-THUMBV6T2: smull [[PROD_LO:r[0-9]+]], [[PROD_HI:r[0-9]+]], r0, r1
; CHECK-THUMBV6T2: movs [[ZERO:r[0-9]+]], #0
; CHECK-THUMBV6T2: rsbs {{.*}}, [[PROD_LO]], #0
; CHECK-THUMBV6T2: sbcs.w {{.*}}, [[ZERO]], [[PROD_HI]]
%in1.64 = sext i32 %in1 to i64
%in2.64 = sext i32 %in2 to i64
%mul = mul nsw i64 %in1.64, %in2.64
%tst = icmp slt i64 %mul, 1
br i1 %tst, label %true, label %false
true:
call void @opaque(i32 42)
ret void
false:
call void @opaque(i32 56)
ret void
}
|
