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Diffstat (limited to 'test/Transforms/LoopStrengthReduce/2012-03-15-nopreheader.ll')
| -rw-r--r-- | test/Transforms/LoopStrengthReduce/2012-03-15-nopreheader.ll | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/test/Transforms/LoopStrengthReduce/2012-03-15-nopreheader.ll b/test/Transforms/LoopStrengthReduce/2012-03-15-nopreheader.ll new file mode 100644 index 0000000..0172492 --- /dev/null +++ b/test/Transforms/LoopStrengthReduce/2012-03-15-nopreheader.ll @@ -0,0 +1,155 @@ +; 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: @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* %cmd, i64 %tmp128 + %tmp195 = load 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 +} |
