1 ; RUN: opt < %s -loop-reduce -S | FileCheck %s
3 ; Test LSR's ability to prune formulae that refer to nonexistent
4 ; AddRecs in other loops.
6 ; Unable to reduce this case further because it requires LSR to exceed
9 ; We really just want to ensure that LSR can process this loop without
10 ; finding an unsatisfactory solution and bailing out. I've added
11 ; dummyout, an obvious candidate for postinc replacement so we can
12 ; verify that LSR removes it.
14 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
15 target triple = "x86_64-apple-darwin"
20 ; CHECK-NOT: %dummyout
22 define i64 @test(i64 %count, ptr nocapture %srcrow, ptr nocapture %destrow) nounwind uwtable ssp {
24 %cmp34 = icmp eq i64 %count, 0
25 br i1 %cmp34, label %for.end29, label %for.body
27 for.body: ; preds = %entry, %for.body
28 %dummyiv = phi i64 [ %dummycnt, %for.body ], [ 0, %entry ]
29 %indvars.iv39 = phi i64 [ %indvars.iv.next40, %for.body ], [ 0, %entry ]
30 %dp.036 = phi ptr [ %add.ptr, %for.body ], [ %destrow, %entry ]
31 %p.035 = phi ptr [ %incdec.ptr4, %for.body ], [ %srcrow, %entry ]
32 %incdec.ptr = getelementptr inbounds float, ptr %p.035, i64 1
33 %0 = load float, ptr %incdec.ptr, align 4
34 %incdec.ptr2 = getelementptr inbounds float, ptr %p.035, i64 2
35 %1 = load float, ptr %incdec.ptr2, align 4
36 %incdec.ptr3 = getelementptr inbounds float, ptr %p.035, i64 3
37 %2 = load float, ptr %incdec.ptr3, align 4
38 %incdec.ptr4 = getelementptr inbounds float, ptr %p.035, i64 4
39 %3 = load float, ptr %incdec.ptr4, align 4
40 %4 = load i32, ptr %dp.036, align 4
41 %conv5 = fptoui float %0 to i32
42 %or = or i32 %4, %conv5
43 %arrayidx6 = getelementptr inbounds i32, ptr %dp.036, i64 1
44 %5 = load i32, ptr %arrayidx6, align 4
45 %conv7 = fptoui float %1 to i32
46 %or8 = or i32 %5, %conv7
47 %arrayidx9 = getelementptr inbounds i32, ptr %dp.036, i64 2
48 %6 = load i32, ptr %arrayidx9, align 4
49 %conv10 = fptoui float %2 to i32
50 %or11 = or i32 %6, %conv10
51 %arrayidx12 = getelementptr inbounds i32, ptr %dp.036, i64 3
52 %7 = load i32, ptr %arrayidx12, align 4
53 %conv13 = fptoui float %3 to i32
54 %or14 = or i32 %7, %conv13
55 store i32 %or, ptr %dp.036, align 4
56 store i32 %or8, ptr %arrayidx6, align 4
57 store i32 %or11, ptr %arrayidx9, align 4
58 store i32 %or14, ptr %arrayidx12, align 4
59 %add.ptr = getelementptr inbounds i32, ptr %dp.036, i64 4
60 %indvars.iv.next40 = add i64 %indvars.iv39, 4
61 %dummycnt = add i64 %dummyiv, 1
62 %cmp = icmp ult i64 %indvars.iv.next40, %count
63 br i1 %cmp, label %for.body, label %for.cond19.preheader
65 for.cond19.preheader: ; preds = %for.body
66 %dummyout = add i64 %dummyiv, 1
67 %rem = and i64 %count, 3
68 %cmp2130 = icmp eq i64 %rem, 0
69 br i1 %cmp2130, label %for.end29, label %for.body23.lr.ph
71 for.body23.lr.ph: ; preds = %for.cond19.preheader
72 %8 = and i64 %count, 3
75 for.body23: ; preds = %for.body23, %for.body23.lr.ph
76 %indvars.iv = phi i64 [ 0, %for.body23.lr.ph ], [ %indvars.iv.next, %for.body23 ]
77 %dp.132 = phi ptr [ %add.ptr, %for.body23.lr.ph ], [ %incdec.ptr28, %for.body23 ]
78 %p.131 = phi ptr [ %incdec.ptr4, %for.body23.lr.ph ], [ %incdec.ptr24, %for.body23 ]
79 %incdec.ptr24 = getelementptr inbounds float, ptr %p.131, i64 1
80 %9 = load float, ptr %incdec.ptr24, align 4
81 %10 = load i32, ptr %dp.132, align 4
82 %conv25 = fptoui float %9 to i32
83 %or26 = or i32 %10, %conv25
84 store i32 %or26, ptr %dp.132, align 4
85 %indvars.iv.next = add i64 %indvars.iv, 1
86 %incdec.ptr28 = getelementptr inbounds i32, ptr %dp.132, i64 1
87 %exitcond = icmp eq i64 %indvars.iv.next, %8
88 br i1 %exitcond, label %for.end29, label %for.body23
90 for.end29: ; preds = %entry, %for.body23, %for.cond19.preheader
91 %result = phi i64 [ 0, %entry ], [ %dummyout, %for.body23 ], [ %dummyout, %for.cond19.preheader ]