| ; RUN: opt < %s -O1 -S -loop-versioning-licm -debug-only=loop-versioning-licm 2>&1 | FileCheck %s |
| ; RUN: opt < %s -S -passes='loop-versioning-licm' -debug-only=loop-versioning-licm 2>&1 | FileCheck %s |
| ; REQUIRES: asserts |
| ; |
| ; Test to confirm loop is not a candidate for LoopVersioningLICM. |
| ; |
| ; CHECK: Loop: Loop at depth 2 containing: %for.body3<header><latch><exiting> |
| ; CHECK-NEXT: LAA: Runtime check not found !! |
| ; CHECK-NEXT: Loop instructions not suitable for LoopVersioningLICM |
| |
| define i32 @foo(i32* nocapture %var1, i32 %itr) #0 { |
| entry: |
| %cmp18 = icmp eq i32 %itr, 0 |
| br i1 %cmp18, label %for.end8, label %for.cond1.preheader |
| |
| for.cond1.preheader: ; preds = %entry, %for.inc6 |
| %j.020 = phi i32 [ %j.1.lcssa, %for.inc6 ], [ 0, %entry ] |
| %i.019 = phi i32 [ %inc7, %for.inc6 ], [ 0, %entry ] |
| %cmp216 = icmp ult i32 %j.020, %itr |
| br i1 %cmp216, label %for.body3.lr.ph, label %for.inc6 |
| |
| for.body3.lr.ph: ; preds = %for.cond1.preheader |
| %0 = zext i32 %j.020 to i64 |
| br label %for.body3 |
| |
| for.body3: ; preds = %for.body3, %for.body3.lr.ph |
| %indvars.iv = phi i64 [ %0, %for.body3.lr.ph ], [ %indvars.iv.next, %for.body3 ] |
| %arrayidx = getelementptr inbounds i32, i32* %var1, i64 %indvars.iv |
| %1 = load i32, i32* %arrayidx, align 4 |
| %add = add nsw i32 %1, %itr |
| store i32 %add, i32* %arrayidx, align 4 |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %itr |
| br i1 %exitcond, label %for.inc6, label %for.body3 |
| |
| for.inc6: ; preds = %for.body3, %for.cond1.preheader |
| %j.1.lcssa = phi i32 [ %j.020, %for.cond1.preheader ], [ %itr, %for.body3 ] |
| %inc7 = add nuw i32 %i.019, 1 |
| %exitcond21 = icmp eq i32 %inc7, %itr |
| br i1 %exitcond21, label %for.end8, label %for.cond1.preheader |
| |
| for.end8: ; preds = %for.inc6, %entry |
| ret i32 0 |
| } |
| |
