1 ; RUN: llc -march=hexagon -hexagon-small-data-threshold=0 -disable-hexagon-amodeopt < %s | FileCheck %s --check-prefix=CHECK-NO-AMODE
2 ; RUN: llc -march=hexagon -hexagon-small-data-threshold=0 -disable-hexagon-amodeopt=0 -hexagon-amode-growth-limit=4 < %s | FileCheck %s --check-prefix=CHECK-AMODE
4 ; CHECK-NO-AMODE: [[REG0:(r[0-9]+)]] = ##global_2
5 ; CHECK-NO-AMODE: memw([[REG0]]+{{.*}}<<#2) =
7 ; CHECK-AMODE: [[REG1:(r[0-9]+)]] = memw(##global_1)
8 ; CHECK-AMODE: memw([[REG1]]<<#2+##global_2) =
10 @global_1 = external global i32, align 4
11 @global_2 = external global [128 x i32], align 8
13 declare i32 @foo(i32, i32) #0
15 define i32 @fred(i32 %a0, i32 %a1, i32* %p) #0 {
17 %call24 = tail call i32 @foo(i32 %a0, i32 1) #0
18 %tobool26 = icmp eq i32 %call24, 0
19 br i1 %tobool26, label %while.end, label %while.body.lr.ph
21 while.body.lr.ph: ; preds = %entry
22 %cmp3 = icmp sgt i32 %a1, 19
23 %sub = sub nsw i32 19, %a0
25 br i1 %cmp3, label %while.body.us.preheader, label %while.body.preheader
27 while.body.preheader: ; preds = %while.body.lr.ph
30 while.body.us.preheader: ; preds = %while.body.lr.ph
31 br label %while.body.us
33 while.body.us: ; preds = %while.body.us.preheader, %while.cond.backedge.us
34 %call27.us = phi i32 [ %call.us, %while.cond.backedge.us ], [ %call24, %while.body.us.preheader ]
35 %x0 = load i32, i32* %p, align 4, !tbaa !4
36 %cmp.us = icmp sgt i32 %x0, 0
37 br i1 %cmp.us, label %if.then.us, label %if.end.us
39 if.then.us: ; preds = %while.body.us
40 %sext.us = shl i32 %call27.us, 24
41 %conv2.us = ashr i32 %sext.us, 24
42 %x10 = tail call i32 @foo(i32 %conv2.us, i32 %sext.us) #0
45 if.end.us: ; preds = %if.then.us, %while.body.us
46 %x1 = load i32, i32* %p, align 4, !tbaa !4
47 %call8.us = tail call i32 @foo(i32 %sub, i32 %a1) #0
48 %tobool11.us = icmp eq i32 %call8.us, 0
49 br i1 %tobool11.us, label %while.cond.backedge.us, label %if.then12.us
51 if.then12.us: ; preds = %if.end.us
52 %x3 = load i32, i32* %p, align 4, !tbaa !4
53 %sub13.us = sub i32 %x3, %x1
54 %x4 = load i32, i32* @global_1, align 4, !tbaa !4
55 %arrayidx.us = getelementptr inbounds [128 x i32], [128 x i32]* @global_2, i32 0, i32 %x4
56 store i32 %sub13.us, i32* %arrayidx.us, align 4, !tbaa !4
57 br label %while.cond.backedge.us
59 while.cond.backedge.us: ; preds = %if.then12.us, %if.end.us
60 %call.us = tail call i32 @foo(i32 %a0, i32 2) #0
61 %tobool.us = icmp eq i32 %call.us, 0
62 br i1 %tobool.us, label %while.end.loopexit, label %while.body.us
64 while.body: ; preds = %while.body.preheader, %while.cond.backedge
65 %call27 = phi i32 [ %call, %while.cond.backedge ], [ %call24, %while.body.preheader ]
66 %x5 = load i32, i32* %p, align 4, !tbaa !4
67 %cmp = icmp sgt i32 %x5, 0
68 br i1 %cmp, label %if.then, label %if.end
70 if.then: ; preds = %while.body
71 %sext = shl i32 %call27, 24
72 %conv2 = ashr i32 %sext, 24
73 %x11 = tail call i32 @foo(i32 %conv2, i32 %sext) #0
76 if.end: ; preds = %if.then, %while.body
77 %tobool11 = icmp eq i32 %call27, 0
78 br i1 %tobool11, label %while.cond.backedge, label %if.then12
80 if.then12: ; preds = %if.end
81 %x7 = load i32, i32* @global_1, align 4, !tbaa !4
82 %arrayidx = getelementptr inbounds [128 x i32], [128 x i32]* @global_2, i32 0, i32 %x7
83 store i32 0, i32* %arrayidx, align 4, !tbaa !4
84 br label %while.cond.backedge
86 while.cond.backedge: ; preds = %if.then12, %if.end
87 %call = tail call i32 @foo(i32 %a0, i32 3) #0
88 %tobool = icmp eq i32 %call, 0
89 br i1 %tobool, label %while.end.loopexit33, label %while.body
91 while.end.loopexit: ; preds = %while.cond.backedge.us
94 while.end.loopexit33: ; preds = %while.cond.backedge
97 while.end: ; preds = %while.end.loopexit33, %while.end.loopexit, %entry
101 attributes #0 = { nounwind }
103 !1 = !{!2, !2, i64 0}
104 !2 = !{!"omnipotent char", !3, i64 0}
105 !3 = !{!"Simple C/C++ TBAA"}
106 !4 = !{!5, !5, i64 0}
107 !5 = !{!"int", !2, i64 0}