2 ; RUN: opt -passes=loop-vectorize -force-vector-width=2 -debug-only=loop-vectorize -S -o - < %s 2>&1 | FileCheck %s
4 %struct.foo = type { i32, i64 }
6 ; CHECK: LV: Found an estimated cost of 0 for VF 2 For instruction: %0 = bitcast ptr %b to ptr
8 ; The bitcast below will be scalarized due to the predication in the loop. Bitcasts
9 ; between pointer types should be treated as free, despite the scalarization.
10 define void @foo(ptr noalias nocapture %in, ptr noalias nocapture readnone %out, i64 %n) {
14 for.body: ; preds = %entry, %if.end
15 %i.012 = phi i64 [ %inc, %if.end ], [ 0, %entry ]
16 %b = getelementptr inbounds %struct.foo, ptr %in, i64 %i.012, i32 1
17 %0 = bitcast ptr %b to ptr
18 %a = getelementptr inbounds %struct.foo, ptr %in, i64 %i.012, i32 0
19 %1 = load i32, ptr %a, align 8
20 %tobool.not = icmp eq i32 %1, 0
21 br i1 %tobool.not, label %if.end, label %land.lhs.true
23 land.lhs.true: ; preds = %for.body
24 %2 = load i32, ptr %0, align 4
25 %cmp2 = icmp sgt i32 %2, 0
26 br i1 %cmp2, label %if.then, label %if.end
28 if.then: ; preds = %land.lhs.true
29 %sub = add nsw i32 %2, -1
30 store i32 %sub, ptr %0, align 4
33 if.end: ; preds = %if.then, %land.lhs.true, %for.body
34 %inc = add nuw nsw i64 %i.012, 1
35 %exitcond.not = icmp eq i64 %inc, %n
36 br i1 %exitcond.not, label %for.end, label %for.body
38 for.end: ; preds = %if.end