3 files changed, 102 insertions, 0 deletions
diff --git a/test/Transforms/LoopVectorize/lcssa-crash.ll b/test/Transforms/LoopVectorize/lcssa-crash.ll
index 06b3b08aa0..de6be54849 100644
--- a/test/Transforms/LoopVectorize/lcssa-crash.ll
+++ b/test/Transforms/LoopVectorize/lcssa-crash.ll
@@ -27,3 +27,14 @@ for.end.i.i.i:
   unreachable
 }
 
+; PR16139
+define void @test2(i8* %x) {
+entry:
+  indirectbr i8* %x, [ label %L0, label %L1 ]
+
+L0:
+  br label %L0
+
+L1:
+  ret void
+}
diff --git a/test/Transforms/LoopVectorize/no_outside_user.ll b/test/Transforms/LoopVectorize/no_outside_user.ll
new file mode 100644
index 0000000000..6f0357c5e5
--- /dev/null
+++ b/test/Transforms/LoopVectorize/no_outside_user.ll
@@ -0,0 +1,41 @@
+; RUN: opt -S -loop-vectorize -force-vector-unroll=1 -force-vector-width=2 < %s | FileCheck %s
+
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32-S128"
+
+@f = common global i32 0, align 4
+@.str = private unnamed_addr constant [4 x i8] c"%d\0A\00", align 1
+@c = common global i32 0, align 4
+@a = common global i32 0, align 4
+@b = common global i32 0, align 4
+@e = common global i32 0, align 4
+
+; We used to vectorize this loop. But it has a value that is used outside of the
+; and is not a recognized reduction variable "tmp17".
+
+; CHECK-NOT: <2 x i32>
+
+define i32 @main()  {
+bb:
+  %b.promoted = load i32* @b, align 4
+  br label %.lr.ph.i
+
+.lr.ph.i:
+  %tmp8 = phi i32 [ %tmp18, %bb16 ], [ %b.promoted, %bb ]
+  %tmp2 = icmp sgt i32 %tmp8, 10
+  br i1 %tmp2, label %bb16, label %bb10
+
+bb10:
+  br label %bb16
+
+bb16:
+  %tmp17 = phi i32 [ 0, %bb10 ], [ 1, %.lr.ph.i ]
+  %tmp18 = add nsw i32 %tmp8, 1
+  %tmp19 = icmp slt i32 %tmp18, 4
+  br i1 %tmp19, label %.lr.ph.i, label %f1.exit.loopexit
+
+f1.exit.loopexit:
+  %.lcssa = phi i32 [ %tmp17, %bb16 ]
+  ret i32 %.lcssa
+}
+
+
diff --git a/test/Transforms/LoopVectorize/value-ptr-bug.ll b/test/Transforms/LoopVectorize/value-ptr-bug.ll
new file mode 100644
index 0000000000..f376656f07
--- /dev/null
+++ b/test/Transforms/LoopVectorize/value-ptr-bug.ll
@@ -0,0 +1,50 @@
+; RUN: opt -S -loop-vectorize -force-vector-width=4 -force-vector-unroll=1 -dce -instcombine < %s | FileCheck %s
+
+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-S128"
+
+; PR16073
+
+; Because we were caching value pointers accross a function call that could RAUW
+; we would generate an undefined value store below:
+; SCEVExpander::expandCodeFor would change a value (the start value of an
+; induction) that we cached in the induction variable list.
+
+; CHECK: test_vh
+; CHECK-NOT: store <4 x i8> undef
+
+define void @test_vh(i32* %ptr265, i32* %ptr266, i32 %sub267) {
+entry:
+  br label %loop
+
+loop:
+  %inc = phi i32 [ %sub267, %entry ], [ %add, %loop]
+  %ext.inc = sext i32 %inc to i64
+  %add.ptr265 = getelementptr inbounds i32* %ptr265, i64 %ext.inc
+  %add.ptr266 = getelementptr inbounds i32* %ptr266, i64 %ext.inc
+  %add = add i32 %inc, 9
+  %cmp = icmp slt i32 %add, 140
+  br i1 %cmp, label %block1, label %loop
+
+block1:
+  %sub267.lcssa = phi i32 [ %add, %loop ]
+  %add.ptr266.lcssa = phi i32* [ %add.ptr266, %loop ]
+  %add.ptr265.lcssa = phi i32* [ %add.ptr265, %loop ]
+  %tmp29 = bitcast i32* %add.ptr265.lcssa to i8*
+  %tmp30 = bitcast i32* %add.ptr266.lcssa to i8*
+  br label %do.body272
+
+do.body272:
+  %row_width.5 = phi i32 [ %sub267.lcssa, %block1 ], [ %dec, %do.body272 ]
+  %sp.4 = phi i8* [ %tmp30, %block1 ], [ %incdec.ptr273, %do.body272 ]
+  %dp.addr.4 = phi i8* [ %tmp29, %block1 ], [ %incdec.ptr274, %do.body272 ]
+  %incdec.ptr273 = getelementptr inbounds i8* %sp.4, i64 1
+  %tmp31 = load i8* %sp.4, align 1
+  %incdec.ptr274 = getelementptr inbounds i8* %dp.addr.4, i64 1
+  store i8 %tmp31, i8* %dp.addr.4, align 1
+  %dec = add i32 %row_width.5, -1
+  %cmp276 = icmp eq i32 %dec, 0
+  br i1 %cmp276, label %loop.exit, label %do.body272
+
+loop.exit:
+  ret void
+}