pr28705.ll
1.32 KB
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; PR28705
; RUN: opt < %s -indvars -S | FileCheck %s
; Check IndVarSimplify doesn't replace external use of the induction var
; "%inc.i.i" with "%.sroa.speculated + 1" because it is not profitable.
;
; CHECK-LABEL: @foo(
; CHECK: %[[EXIT:.+]] = phi i32 [ %inc.i.i, %for.body650 ]
; CHECK: %DB.sroa.9.0.lcssa = phi i32 [ 1, %entry ], [ %[[EXIT]], %loopexit ]
;
define void @foo(i32 %sub.ptr.div.i, i8* %ref.i1174) local_unnamed_addr {
entry:
%cmp.i1137 = icmp ugt i32 %sub.ptr.div.i, 3
%.sroa.speculated = select i1 %cmp.i1137, i32 3, i32 %sub.ptr.div.i
%cmp6483126 = icmp eq i32 %.sroa.speculated, 0
br i1 %cmp6483126, label %XZ.exit, label %for.body650.lr.ph
for.body650.lr.ph:
br label %for.body650
loopexit:
%inc.i.i.lcssa = phi i32 [ %inc.i.i, %for.body650 ]
br label %XZ.exit
XZ.exit:
%DB.sroa.9.0.lcssa = phi i32 [ 1, %entry ], [ %inc.i.i.lcssa, %loopexit ]
br label %end
for.body650:
%iv = phi i32 [ 0, %for.body650.lr.ph ], [ %inc655, %for.body650 ]
%iv2 = phi i32 [ 1, %for.body650.lr.ph ], [ %inc.i.i, %for.body650 ]
%arrayidx.i.i1105 = getelementptr inbounds i8, i8* %ref.i1174, i32 %iv2
store i8 7, i8* %arrayidx.i.i1105, align 1
%inc.i.i = add i32 %iv2, 1
%inc655 = add i32 %iv, 1
%cmp648 = icmp eq i32 %inc655, %.sroa.speculated
br i1 %cmp648, label %loopexit, label %for.body650
end:
ret void
}