1; REQUIRES: asserts 2; RUN: opt -passes=loop-vectorize -force-vector-width=2 -debug-only=loop-vectorize --disable-output -S -o - < %s 2>&1 | FileCheck %s 3 4%struct.foo = type { i32, i64 } 5 6; CHECK: LV: Found an estimated cost of 0 for VF 2 For instruction: %0 = bitcast ptr %b to ptr 7 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. 10define void @foo(ptr noalias nocapture %in, ptr noalias nocapture readnone %out, i64 %n) { 11entry: 12 br label %for.body 13 14for.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 22 23land.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 27 28if.then: ; preds = %land.lhs.true 29 %sub = add nsw i32 %2, -1 30 store i32 %sub, ptr %0, align 4 31 br label %if.end 32 33if.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 37 38for.end: ; preds = %if.end 39 ret void 40} 41