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; Loop is elimianted
; RUN: llvm-as < %s | opt -loop-index-split -disable-output -stats |& \
; RUN: grep "loop-index-split" | count 1
%struct.anon = type { i32 }
@S1 = external global i32 ; <i32*> [#uses=1]
@W1 = external global i32 ; <i32*> [#uses=1]
@Y = weak global [100 x %struct.anon] zeroinitializer, align 32 ; <[100 x %struct.anon]*> [#uses=1]
@ti = external global i32 ; <i32*> [#uses=1]
@T2 = external global [100 x [100 x i32]] ; <[100 x [100 x i32]]*> [#uses=1]
@d = external global i32 ; <i32*> [#uses=1]
@T1 = external global i32 ; <i32*> [#uses=2]
@N2 = external global i32 ; <i32*> [#uses=2]
define void @foo() {
entry:
%tmp = load i32* @S1, align 4 ; <i32> [#uses=4]
%tmp266 = load i32* @N2, align 4 ; <i32> [#uses=1]
%tmp288 = icmp ult i32 %tmp, %tmp266 ; <i1> [#uses=1]
br i1 %tmp288, label %bb.preheader, label %return
bb.preheader: ; preds = %entry
%tmp1 = load i32* @W1, align 4 ; <i32> [#uses=1]
%tmp13 = load i32* @ti, align 4 ; <i32> [#uses=1]
%tmp18 = load i32* @d, align 4 ; <i32> [#uses=1]
%tmp26 = load i32* @N2, align 4 ; <i32> [#uses=2]
%T1.promoted = load i32* @T1 ; <i32> [#uses=1]
%tmp2 = add i32 %tmp, 1 ; <i32> [#uses=2]
%tmp4 = icmp ugt i32 %tmp2, %tmp26 ; <i1> [#uses=1]
%umax = select i1 %tmp4, i32 %tmp2, i32 %tmp26 ; <i32> [#uses=1]
%tmp5 = sub i32 0, %tmp ; <i32> [#uses=1]
%tmp6 = add i32 %umax, %tmp5 ; <i32> [#uses=1]
br label %bb
bb: ; preds = %bb25, %bb.preheader
%indvar = phi i32 [ 0, %bb.preheader ], [ %indvar.next, %bb25 ] ; <i32> [#uses=2]
%T1.tmp.1 = phi i32 [ %T1.promoted, %bb.preheader ], [ %T1.tmp.0, %bb25 ] ; <i32> [#uses=3]
%tj.01.0 = add i32 %indvar, %tmp ; <i32> [#uses=3]
%tmp3 = icmp eq i32 %tj.01.0, %tmp1 ; <i1> [#uses=1]
br i1 %tmp3, label %cond_true, label %bb25
cond_true: ; preds = %bb
%tmp7 = getelementptr [100 x %struct.anon]* @Y, i32 0, i32 %tj.01.0, i32 0 ; <i32*> [#uses=1]
%tmp8 = load i32* %tmp7, align 4 ; <i32> [#uses=1]
%tmp9 = icmp sgt i32 %tmp8, 0 ; <i1> [#uses=1]
br i1 %tmp9, label %cond_true12, label %bb25
cond_true12: ; preds = %cond_true
%tmp16 = getelementptr [100 x [100 x i32]]* @T2, i32 0, i32 %tmp13, i32 %tj.01.0 ; <i32*> [#uses=1]
%tmp17 = load i32* %tmp16, align 4 ; <i32> [#uses=1]
%tmp19 = mul i32 %tmp18, %tmp17 ; <i32> [#uses=1]
%tmp21 = add i32 %tmp19, %T1.tmp.1 ; <i32> [#uses=1]
br label %bb25
bb25: ; preds = %cond_true12, %cond_true, %bb
%T1.tmp.0 = phi i32 [ %T1.tmp.1, %bb ], [ %T1.tmp.1, %cond_true ], [ %tmp21, %cond_true12 ] ; <i32> [#uses=2]
%indvar.next = add i32 %indvar, 1 ; <i32> [#uses=2]
%exitcond = icmp ne i32 %indvar.next, %tmp6 ; <i1> [#uses=1]
br i1 %exitcond, label %bb, label %return.loopexit
return.loopexit: ; preds = %bb25
%T1.tmp.0.lcssa = phi i32 [ %T1.tmp.0, %bb25 ] ; <i32> [#uses=1]
store i32 %T1.tmp.0.lcssa, i32* @T1
br label %return
return: ; preds = %return.loopexit, %entry
ret void
}
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