aboutsummaryrefslogtreecommitdiffstats
path: root/test/CodeGen/Thumb/ldr_ext.ll
blob: 9a28124b84ce4d1566fc6e1fb0246f36346efef5 (plain)
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
; RUN: llc < %s -march=thumb | FileCheck %s -check-prefix=V5
; RUN: llc < %s -march=thumb -mattr=+v6 | FileCheck %s -check-prefix=V6

; rdar://7176514

define i32 @test1(i8* %t1) nounwind {
; V5: ldrb

; V6: ldrb
    %tmp.u = load i8* %t1
    %tmp1.s = zext i8 %tmp.u to i32
    ret i32 %tmp1.s
}

define i32 @test2(i16* %t1) nounwind {
; V5: ldrh

; V6: ldrh
    %tmp.u = load i16* %t1
    %tmp1.s = zext i16 %tmp.u to i32
    ret i32 %tmp1.s
}

define i32 @test3(i8* %t0) nounwind {
; V5: ldrb
; V5: lsls
; V5: asrs

; V6: ldrb
; V6: sxtb
    %tmp.s = load i8* %t0
    %tmp1.s = sext i8 %tmp.s to i32
    ret i32 %tmp1.s
}

define i32 @test4(i16* %t0) nounwind {
; V5: ldrh
; V5: lsls
; V5: asrs

; V6: ldrh
; V6: sxth
    %tmp.s = load i16* %t0
    %tmp1.s = sext i16 %tmp.s to i32
    ret i32 %tmp1.s
}

define i32 @test5() nounwind {
; V5: movs r0, #0
; V5: ldrsh

; V6: movs r0, #0
; V6: ldrsh
    %tmp.s = load i16* null
    %tmp1.s = sext i16 %tmp.s to i32
    ret i32 %tmp1.s
}