loopversioningLICM3.ll
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; RUN: opt < %s -O1 -S -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
}