| ; REQUIRES: asserts |
| ; RUN: opt -mtriple=s390x-unknown-linux -mcpu=z13 -passes=loop-vectorize \ |
| ; RUN: -force-vector-width=2 -debug-only=loop-vectorize \ |
| ; RUN: -disable-output < %s 2>&1 | FileCheck %s |
| |
| ; Check costs for branches inside a vectorized loop around predicated |
| ; blocks. Each such branch will be guarded with an extractelement from the |
| ; vector compare plus a test under mask instruction. This cost is modelled on |
| ; the extractelement of i1. |
| |
| define void @fun(ptr %arr, i64 %trip.count) { |
| entry: |
| br label %for.body |
| |
| for.body: |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] |
| %arrayidx = getelementptr inbounds i32, ptr %arr, i64 %indvars.iv |
| %l = load i32, ptr %arrayidx, align 4 |
| %cmp55 = icmp sgt i32 %l, 0 |
| br i1 %cmp55, label %if.then, label %for.inc |
| |
| if.then: |
| %sub = sub nsw i32 0, %l |
| store i32 %sub, ptr %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %exitcond = icmp eq i64 %indvars.iv.next, %trip.count |
| br i1 %exitcond, label %for.end.loopexit, label %for.body |
| |
| for.end.loopexit: |
| ret void |
| |
| ; CHECK: LV: Found an estimated cost of 7 for VF 2 For instruction: br i1 %cmp55, label %if.then, label %for.inc |
| ; CHECK: LV: Found an estimated cost of 0 for VF 2 For instruction: br label %for.inc |
| ; CHECK: LV: Found an estimated cost of 1 for VF 2 For instruction: br i1 %exitcond, label %for.end.loopexit, label %for.body |
| } |