1 ; RUN: opt < %s -S -unroll-partial-threshold=20 -unroll-threshold=20 -loop-unroll -unroll-allow-partial -unroll-runtime -unroll-allow-remainder -unroll-max-percent-threshold-boost=100 | FileCheck %s 2 ; RUN: opt < %s -S -passes='require<opt-remark-emit>,unroll' -unroll-partial-threshold=20 -unroll-threshold=20 -unroll-allow-partial -unroll-runtime -unroll-allow-remainder -unroll-max-percent-threshold-boost=100 | FileCheck %s 3 ; 4 ; Also check that the simple unroller doesn't allow the partial unrolling. 5 ; RUN: opt < %s -S -passes='require<opt-remark-emit>,loop(unroll-full)' -unroll-partial-threshold=20 -unroll-threshold=20 -unroll-allow-partial -unroll-runtime -unroll-allow-remainder -unroll-max-percent-threshold-boost=100 | FileCheck %s --check-prefix=CHECK-NO-UNROLL 6 7 ; The Loop TripCount is 9. However unroll factors 3 or 9 exceed given threshold. 8 ; The test checks that we choose a smaller, power-of-two, unroll count and do not give up on unrolling. 9 10 ; CHECK: for.body: 11 ; CHECK: store 12 ; CHECK: for.body.1: 13 ; CHECK: store 14 15 ; CHECK-NO-UNROLL: for.body: 16 ; CHECK-NO-UNROLL: store 17 ; CHECK-NO-UNROLL-NOT: store 18 19 define void @foo(i32* nocapture %a, i32* nocapture readonly %b) nounwind uwtable { 20 entry: 21 br label %for.body 22 23 for.body: ; preds = %for.body, %entry 24 %indvars.iv = phi i64 [ 1, %entry ], [ %indvars.iv.next, %for.body ] 25 %arrayidx = getelementptr inbounds i32, i32* %b, i64 %indvars.iv 26 %ld = load i32, i32* %arrayidx, align 4 27 %idxprom1 = sext i32 %ld to i64 28 %arrayidx2 = getelementptr inbounds i32, i32* %a, i64 %idxprom1 29 %st = trunc i64 %indvars.iv to i32 30 store i32 %st, i32* %arrayidx2, align 4 31 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 32 %exitcond = icmp eq i64 %indvars.iv.next, 20 33 br i1 %exitcond, label %for.end, label %for.body 34 35 for.end: ; preds = %for.body 36 ret void 37 } 38
