ldr_ext.ll
1.01 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
44
45
46
47
48
49
50
51
52
53
54
55
56
57
; RUN: llc -mtriple=thumb-eabi %s -o - | FileCheck %s -check-prefix=V5
; RUN: llc -mtriple=thumb-eabi -mattr=+v6 %s -o - | FileCheck %s -check-prefix=V6
; rdar://7176514
define i32 @test1(i8* %t1) nounwind {
; V5: ldrb
; V6: ldrb
%tmp.u = load i8, 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, 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, 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, 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, i16* null
%tmp1.s = sext i16 %tmp.s to i32
ret i32 %tmp1.s
}