1 ; RUN: opt -basicaa -loop-versioning -S < %s | FileCheck %s 2 3 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 4 5 ; Version this loop with overlap checks between a, c and b, c. 6 7 define void @f(i32* %a, i32* %b, i32* %c) { 8 entry: 9 br label %for.body 10 11 ; CHECK: for.body.lver.check: 12 ; CHECK: icmp 13 ; CHECK: icmp 14 ; CHECK: icmp 15 ; CHECK: icmp 16 ; CHECK-NOT: icmp 17 ; CHECK: br i1 %memcheck.conflict, label %for.body.ph.lver.orig, label %for.body.ph 18 19 ; CHECK: for.body.ph.lver.orig: 20 ; CHECK: for.body.lver.orig: 21 ; CHECK: br i1 %exitcond.lver.orig, label %for.end, label %for.body.lver.orig 22 ; CHECK: for.body.ph: 23 ; CHECK: for.body: 24 ; CHECK: br i1 %exitcond, label %for.end, label %for.body 25 ; CHECK: for.end: 26 27 for.body: ; preds = %for.body, %entry 28 %ind = phi i64 [ 0, %entry ], [ %add, %for.body ] 29 30 %arrayidxA = getelementptr inbounds i32, i32* %a, i64 %ind 31 %loadA = load i32, i32* %arrayidxA, align 4 32 33 %arrayidxB = getelementptr inbounds i32, i32* %b, i64 %ind 34 %loadB = load i32, i32* %arrayidxB, align 4 35 36 %mulC = mul i32 %loadA, %loadB 37 38 %arrayidxC = getelementptr inbounds i32, i32* %c, i64 %ind 39 store i32 %mulC, i32* %arrayidxC, align 4 40 41 %add = add nuw nsw i64 %ind, 1 42 %exitcond = icmp eq i64 %add, 20 43 br i1 %exitcond, label %for.end, label %for.body 44 45 for.end: ; preds = %for.body 46 ret void 47 } 48
