| ; Check that we won't interleave by more than "best known" estimated trip count. |
| |
| ; The loop is expected to be vectorized by 4 and interleaving suppresed due to |
| ; short trip count which is controled by "tiny-trip-count-interleave-threshold". |
| ; RUN: opt -passes=loop-vectorize -force-vector-width=4 -vectorizer-min-trip-count=4 -S < %s | FileCheck %s |
| ; |
| ; The loop is expected to be vectorized by 4 and computed interleaving factor is 1. |
| ; Thus the resulting step is 4. |
| ; RUN: opt -passes=loop-vectorize -force-vector-width=4 -vectorizer-min-trip-count=4 -tiny-trip-count-interleave-threshold=4 -S < %s | FileCheck %s |
| |
| ; The loop is expected to be vectorized by 2 and computed interleaving factor is 2. |
| ; Thus the resulting step is 4. |
| ; RUN: opt -passes=loop-vectorize -force-vector-width=2 -vectorizer-min-trip-count=4 -tiny-trip-count-interleave-threshold=4 -S < %s | FileCheck %s |
| |
| ; Check that we won't interleave by more than "best known" estimated trip count. |
| |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| @a = dso_local global [5 x i32] zeroinitializer, align 16 |
| @b = dso_local global [5 x i32] zeroinitializer, align 16 |
| |
| ; Function Attrs: nofree norecurse nounwind uwtable |
| define dso_local void @_Z3fooi(i32 %M) local_unnamed_addr { |
| ; CHECK-LABEL: @_Z3fooi( |
| ; CHECK: [[VECTOR_BODY:vector\.body]]: |
| ; CHECK: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH:%.*]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ] |
| ; CHECK: [[INDEX_NEXT]] = add i64 [[INDEX]], 4 |
| ; |
| entry: |
| %cmp8 = icmp sgt i32 %M, 0 |
| br i1 %cmp8, label %for.body.preheader, label %for.cond.cleanup |
| |
| for.body.preheader: ; preds = %entry |
| %wide.trip.count = zext i32 %M to i64 |
| br label %for.body |
| |
| for.cond.cleanup.loopexit: ; preds = %for.body |
| br label %for.cond.cleanup |
| |
| for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry |
| ret void |
| |
| for.body: ; preds = %for.body, %for.body.preheader |
| %indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ] |
| %arrayidx = getelementptr inbounds [5 x i32], [5 x i32]* @b, i64 0, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %1 = trunc i64 %indvars.iv to i32 |
| %mul = mul nsw i32 %0, %1 |
| %arrayidx2 = getelementptr inbounds [5 x i32], [5 x i32]* @a, i64 0, i64 %indvars.iv |
| %2 = load i32, i32* %arrayidx2, align 4 |
| %add = add nsw i32 %2, %mul |
| store i32 %add, i32* %arrayidx2, align 4 |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %exitcond = icmp eq i64 %indvars.iv.next, %wide.trip.count |
| br i1 %exitcond, label %for.cond.cleanup.loopexit, label %for.body, !prof !1 |
| } |
| |
| !1 = !{!"branch_weights", i32 1, i32 5} |