1 files changed, 113 insertions, 0 deletions
diff --git a/llvm/test/Transforms/LoopStrengthReduce/dominate-assert.ll b/llvm/test/Transforms/LoopStrengthReduce/dominate-assert.ll
new file mode 100644
index 00000000000..ff26c76b3c1
--- /dev/null
+++ b/llvm/test/Transforms/LoopStrengthReduce/dominate-assert.ll
@@ -0,0 +1,113 @@
+; RUN: opt -loop-reduce < %s
+; we used to crash on this one
+
+declare i8* @_Znwm()
+declare i32 @__gxx_personality_v0(...)
+declare void @g()
+define void @f() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
+bb0:
+  br label %bb1
+bb1:
+  %v0 = phi i64 [ 0, %bb0 ], [ %v1, %bb1 ]
+  %v1 = add nsw i64 %v0, 1
+  br i1 undef, label %bb2, label %bb1
+bb2:
+  %v2 = icmp eq i64 %v0, 0
+  br i1 %v2, label %bb6, label %bb3
+bb3:
+  %v3 = invoke noalias i8* @_Znwm()
+          to label %bb5 unwind label %bb4
+bb4:
+  %v4 = landingpad { i8*, i32 }
+          cleanup
+  br label %bb9
+bb5:
+  %v5 = bitcast i8* %v3 to i32**
+  %add.ptr.i = getelementptr inbounds i32*, i32** %v5, i64 %v0
+  br label %bb6
+bb6:
+  %v6 = phi i32** [ null, %bb2 ], [ %add.ptr.i, %bb5 ]
+  invoke void @g()
+          to label %bb7 unwind label %bb8
+bb7:
+  unreachable
+bb8:
+  %v7 = landingpad { i8*, i32 }
+          cleanup
+  br label %bb9
+bb9:
+  resume { i8*, i32 } zeroinitializer
+}
+
+
+define void @h() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
+bb1:
+  invoke void @g() optsize
+          to label %bb2 unwind label %bb5
+bb2:
+  %arrayctor.cur = phi i8* [ undef, %bb1 ], [ %arrayctor.next, %bb3 ]
+  invoke void @g() optsize
+          to label %bb3 unwind label %bb6
+bb3:
+  %arrayctor.next = getelementptr inbounds i8, i8* %arrayctor.cur, i64 1
+  br label %bb2
+bb4:
+  ret void
+bb5:
+  %tmp = landingpad { i8*, i32 }
+          cleanup
+  invoke void @g() optsize
+          to label %bb4 unwind label %bb7
+bb6:
+  %tmp1 = landingpad { i8*, i32 }
+          cleanup
+  %arraydestroy.isempty = icmp eq i8* undef, %arrayctor.cur
+  ret void
+bb7:
+  %lpad.nonloopexit = landingpad { i8*, i32 }
+          catch i8* null
+  ret void
+}
+
+; PR17425
+define void @i() {
+entry:
+  br label %while.cond
+
+while.cond:                                       ; preds = %while.cond, %entry
+  %c.0 = phi i16* [ undef, %entry ], [ %incdec.ptr, %while.cond ]
+  %incdec.ptr = getelementptr inbounds i16, i16* %c.0, i64 1
+  br i1 undef, label %while.cond1, label %while.cond
+
+while.cond1:                                      ; preds = %while.cond1, %while.cond
+  %c.1 = phi i16* [ %incdec.ptr5, %while.cond1 ], [ %c.0, %while.cond ]
+  %incdec.ptr5 = getelementptr inbounds i16, i16* %c.1, i64 1
+  br i1 undef, label %while.cond7, label %while.cond1
+
+while.cond7:                                      ; preds = %while.cond7, %while.cond1
+  %0 = phi i16* [ %incdec.ptr10, %while.cond7 ], [ %c.1, %while.cond1 ]
+  %incdec.ptr10 = getelementptr inbounds i16, i16* %0, i64 1
+  br i1 undef, label %while.cond12.preheader, label %while.cond7
+
+while.cond12.preheader:                           ; preds = %while.cond7
+  br i1 undef, label %while.end16, label %while.body13.lr.ph
+
+while.body13:                                     ; preds = %if.else, %while.body13.lr.ph
+  %1 = phi i16* [ %2, %while.body13.lr.ph ], [ %incdec.ptr15, %if.else ]
+  br i1 undef, label %while.cond12.outer.loopexit, label %if.else
+
+while.cond12.outer.loopexit:                      ; preds = %while.body13
+  br i1 undef, label %while.end16, label %while.body13.lr.ph
+
+while.body13.lr.ph:                               ; preds = %while.cond12.outer.loopexit, %while.cond12.preheader
+  %2 = phi i16* [ %1, %while.cond12.outer.loopexit ], [ undef, %while.cond12.preheader ]
+  br label %while.body13
+
+if.else:                                          ; preds = %while.body13
+  %incdec.ptr15 = getelementptr inbounds i16, i16* %1, i64 1
+  %cmp = icmp eq i16* %incdec.ptr15, %0
+  br i1 %cmp, label %while.end16, label %while.body13
+
+while.end16:                                      ; preds = %if.else, %while.cond12.outer.loopexit, %while.cond12.preheader
+  ret void
+}