• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1; RUN: llc < %s -march=avr -mattr=movw,lpm | FileCheck %s
2; XFAIL: *
3
4; Tests the standard LPM instruction
5
6define i8 @test8(i8 addrspace(1)* %p) {
7; CHECK-LABEL: test8:
8; CHECK: movw r30, r24
9; CHECK: lpm r24, Z
10  %1 = load i8, i8 addrspace(1)* %p
11  ret i8 %1
12}
13
14define i16 @test16(i16 addrspace(1)* %p) {
15; CHECK-LABEL: test16:
16; CHECK: movw r30, r24
17; CHECK: lpm r24, Z+
18; CHECK: lpm r25, Z+
19  %1 = load i16, i16 addrspace(1)* %p
20  ret i16 %1
21}
22
23define i8 @test8postinc(i8 addrspace(1)* %x, i8 %y) {
24; CHECK-LABEL: test8postinc:
25; CHECK: movw r30, r24
26; CHECK: lpm {{.*}}, Z+
27entry:
28  %cmp10 = icmp sgt i8 %y, 0
29  br i1 %cmp10, label %for.body, label %for.end
30
31for.body:                                         ; preds = %entry, %for.body
32  %ret.013 = phi i8 [ %add, %for.body ], [ 0, %entry ]
33  %i.012 = phi i8 [ %inc, %for.body ], [ 0, %entry ]
34  %x.addr.011 = phi i8 addrspace(1)* [ %incdec.ptr, %for.body ], [ %x, %entry ]
35  %incdec.ptr = getelementptr inbounds i8, i8 addrspace(1)* %x.addr.011, i16 1
36  %0 = load i8, i8 addrspace(1)* %x.addr.011
37  %add = add i8 %0, %ret.013
38  %inc = add i8 %i.012, 1
39  %exitcond = icmp eq i8 %inc, %y
40  br i1 %exitcond, label %for.end, label %for.body
41
42for.end:                                          ; preds = %for.body, %entry
43  %ret.0.lcssa = phi i8 [ 0, %entry ], [ %add, %for.body ]
44  ret i8 %ret.0.lcssa
45}
46
47define i16 @test16postinc(i16 addrspace(1)* %x, i8 %y) {
48; CHECK-LABEL: test16postinc:
49; CHECK: movw r30, r24
50; CHECK: lpm {{.*}}, Z+
51; CHECK: lpm {{.*}}, Z+
52entry:
53  %cmp5 = icmp sgt i8 %y, 0
54  br i1 %cmp5, label %for.body, label %for.end
55
56for.body:                                         ; preds = %entry, %for.body
57  %ret.08 = phi i16 [ %add, %for.body ], [ 0, %entry ]
58  %i.07 = phi i8 [ %inc, %for.body ], [ 0, %entry ]
59  %x.addr.06 = phi i16 addrspace(1)* [ %incdec.ptr, %for.body ], [ %x, %entry ]
60  %incdec.ptr = getelementptr inbounds i16, i16 addrspace(1)* %x.addr.06, i16 1
61  %0 = load i16, i16 addrspace(1)* %x.addr.06
62  %add = add nsw i16 %0, %ret.08
63  %inc = add i8 %i.07, 1
64  %exitcond = icmp eq i8 %inc, %y
65  br i1 %exitcond, label %for.end, label %for.body
66
67for.end:                                          ; preds = %for.body, %entry
68  %ret.0.lcssa = phi i16 [ 0, %entry ], [ %add, %for.body ]
69  ret i16 %ret.0.lcssa
70}
71