| ; RUN: opt -loop-reduce -S < %s | FileCheck %s |
| ; |
| ; <rdar://problem/11049788> Segmentation fault: 11 in LoopStrengthReduce |
| |
| target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" |
| target triple = "x86_64-apple-darwin10.0.0" |
| |
| ; IVUsers should not consider tmp128 a valid user because it is not in a |
| ; simplified loop nest. |
| ; CHECK-LABEL: @nopreheader( |
| ; CHECK: for.cond: |
| ; CHECK: %tmp128 = add i64 %0, %indvar65 |
| define void @nopreheader(i8* %cmd) nounwind ssp { |
| entry: |
| indirectbr i8* undef, [label %while.cond] |
| |
| while.cond: ; preds = %while.body, %entry |
| %0 = phi i64 [ %indvar.next48, %while.body ], [ 0, %entry ] |
| indirectbr i8* undef, [label %while.end, label %while.body] |
| |
| while.body: ; preds = %lor.rhs, %lor.lhs.false17, %lor.lhs.false11, %lor.lhs.false, %land.rhs |
| %indvar.next48 = add i64 %0, 1 |
| indirectbr i8* undef, [label %while.cond] |
| |
| while.end: ; preds = %lor.rhs, %while.cond |
| indirectbr i8* undef, [label %if.end152] |
| |
| if.end152: ; preds = %lor.lhs.false144, %if.end110 |
| indirectbr i8* undef, [label %lor.lhs.false184, label %for.cond] |
| |
| lor.lhs.false184: ; preds = %lor.lhs.false177 |
| indirectbr i8* undef, [label %return, label %for.cond] |
| |
| for.cond: ; preds = %for.inc, %lor.lhs.false184, %if.end152 |
| %indvar65 = phi i64 [ %indvar.next66, %for.inc ], [ 0, %lor.lhs.false184 ], [ 0, %if.end152 ] |
| %tmp128 = add i64 %0, %indvar65 |
| %s.4 = getelementptr i8, i8* %cmd, i64 %tmp128 |
| %tmp195 = load i8, i8* %s.4, align 1 |
| indirectbr i8* undef, [label %return, label %land.rhs198] |
| |
| land.rhs198: ; preds = %for.cond |
| indirectbr i8* undef, [label %return, label %for.inc] |
| |
| for.inc: ; preds = %lor.rhs234, %land.lhs.true228, %land.lhs.true216, %land.lhs.true204 |
| %indvar.next66 = add i64 %indvar65, 1 |
| indirectbr i8* undef, [label %for.cond] |
| |
| return: ; preds = %if.end677, %doshell, %if.then96 |
| ret void |
| } |
| |
| ; Another case with a dominating loop that does not contain the IV |
| ; User. Just make sure it doesn't assert. |
| define void @nopreheader2() nounwind ssp { |
| entry: |
| indirectbr i8* undef, [label %while.cond, label %return] |
| |
| while.cond: ; preds = %while.cond.backedge, %entry |
| indirectbr i8* undef, [label %while.cond.backedge, label %lor.rhs] |
| |
| lor.rhs: ; preds = %while.cond |
| indirectbr i8* undef, [label %while.cond.backedge, label %while.end] |
| |
| while.cond.backedge: ; preds = %lor.rhs, %while.cond |
| indirectbr i8* undef, [label %while.cond] |
| |
| while.end: ; preds = %lor.rhs |
| indirectbr i8* undef, [label %if.then18, label %return] |
| |
| if.then18: ; preds = %while.end |
| indirectbr i8* undef, [label %if.end35, label %lor.lhs.false] |
| |
| lor.lhs.false: ; preds = %if.then18 |
| indirectbr i8* undef, [label %if.end35, label %return] |
| |
| if.end35: ; preds = %lor.lhs.false, %if.then18 |
| indirectbr i8* undef, [label %while.cond36] |
| |
| while.cond36: ; preds = %while.body49, %if.end35 |
| %0 = phi i64 [ %indvar.next13, %while.body49 ], [ 0, %if.end35 ] |
| indirectbr i8* undef, [label %while.body49, label %lor.rhs42] |
| |
| lor.rhs42: ; preds = %while.cond36 |
| indirectbr i8* undef, [label %while.body49, label %while.end52] |
| |
| while.body49: ; preds = %lor.rhs42, %while.cond36 |
| %indvar.next13 = add i64 %0, 1 |
| indirectbr i8* undef, [label %while.cond36] |
| |
| while.end52: ; preds = %lor.rhs42 |
| indirectbr i8* undef, [label %land.lhs.true, label %return] |
| |
| land.lhs.true: ; preds = %while.end52 |
| indirectbr i8* undef, [label %while.cond66.preheader, label %return] |
| |
| while.cond66.preheader: ; preds = %land.lhs.true |
| indirectbr i8* undef, [label %while.cond66] |
| |
| while.cond66: ; preds = %while.body77, %while.cond66.preheader |
| indirectbr i8* undef, [label %land.rhs, label %while.cond81.preheader] |
| |
| land.rhs: ; preds = %while.cond66 |
| indirectbr i8* undef, [label %while.body77, label %while.cond81.preheader] |
| |
| while.cond81.preheader: ; preds = %land.rhs, %while.cond66 |
| %tmp45 = add i64 undef, %0 |
| %tmp46 = add i64 %tmp45, undef |
| indirectbr i8* undef, [label %while.cond81] |
| |
| while.body77: ; preds = %land.rhs |
| indirectbr i8* undef, [label %while.cond66] |
| |
| while.cond81: ; preds = %while.body94, %while.cond81.preheader |
| %tmp25 = add i64 %tmp46, undef |
| indirectbr i8* undef, [label %while.body94, label %lor.rhs87] |
| |
| lor.rhs87: ; preds = %while.cond81 |
| indirectbr i8* undef, [label %while.body94, label %return] |
| |
| while.body94: ; preds = %lor.rhs87, %while.cond81 |
| indirectbr i8* undef, [label %while.cond81] |
| |
| return: ; preds = %if.end216, %land.lhs.true183, %land.lhs.true, %while.end52, %lor.lhs.false, %while.end, %entry |
| ret void |
| } |
| |
| ; Test a phi operand IV User dominated by a no-preheader loop. |
| define void @nopreheader3() nounwind uwtable ssp align 2 { |
| entry: |
| indirectbr i8* blockaddress(@nopreheader3, %if.end10), [label %if.end22, label %if.end10] |
| |
| if.end10: ; preds = %entry |
| indirectbr i8* blockaddress(@nopreheader3, %if.end6.i), [label %if.end22, label %if.end6.i] |
| |
| if.end6.i: ; preds = %if.end10 |
| indirectbr i8* blockaddress(@nopreheader3, %while.cond2.preheader.i.i), [label %if.then12, label %while.cond2.preheader.i.i] |
| |
| while.cond2.preheader.i.i: ; preds = %while.end.i18.i, %if.end6.i |
| indirectbr i8* blockaddress(@nopreheader3, %while.cond2.i.i), [label %while.cond2.i.i] |
| |
| while.cond2.i.i: ; preds = %while.cond2.i.i, %while.cond2.preheader.i.i |
| %i1.1.i14.i = phi i32 [ %add.i15.i, %while.cond2.i.i ], [ undef, %while.cond2.preheader.i.i ] |
| %add.i15.i = add nsw i32 %i1.1.i14.i, undef |
| indirectbr i8* blockaddress(@nopreheader3, %while.end.i18.i), [label %while.cond2.i.i, label %while.end.i18.i] |
| |
| while.end.i18.i: ; preds = %while.cond2.i.i |
| indirectbr i8* blockaddress(@nopreheader3, %while.cond2.preheader.i.i), [label %if.then12, label %while.cond2.preheader.i.i] |
| |
| if.then12: ; preds = %while.end.i18.i, %if.end6.i |
| %i1.0.lcssa.i.i = phi i32 [ undef, %if.end6.i ], [ %i1.1.i14.i, %while.end.i18.i ] |
| indirectbr i8* blockaddress(@nopreheader3, %if.end22), [label %if.end22] |
| |
| if.end22: ; preds = %if.then12, %if.end10, %entry |
| ret void |
| } |
