1 files changed, 68 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/concatvector-bugs.ll b/test/CodeGen/AArch64/concatvector-bugs.ll
new file mode 100644
index 0000000..5889e22
--- /dev/null
+++ b/test/CodeGen/AArch64/concatvector-bugs.ll
@@ -0,0 +1,68 @@
+; RUN: llc < %s -verify-machineinstrs -mtriple=aarch64-none-linux-gnu -mattr=+neon
+; Bug: i8 type in FRP8 register but not registering with register class causes segmentation fault.
+; Fix: Removed i8 type from FPR8 register class.
+
+define void @test_concatvector_v8i8() {
+entry.split:
+  br i1 undef, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry.split
+  unreachable
+
+if.end:                                           ; preds = %entry.split
+  br i1 undef, label %if.then9, label %if.end18
+
+if.then9:                                         ; preds = %if.end
+  unreachable
+
+if.end18:                                         ; preds = %if.end
+  br label %for.body
+
+for.body:                                         ; preds = %for.inc, %if.end18
+  br i1 false, label %if.then30, label %for.inc
+
+if.then30:                                        ; preds = %for.body
+  unreachable
+
+for.inc:                                          ; preds = %for.body
+  br i1 undef, label %for.end, label %for.body
+
+for.end:                                          ; preds = %for.inc
+  br label %for.body77
+
+for.body77:                                       ; preds = %for.body77, %for.end
+  br i1 undef, label %for.end106, label %for.body77
+
+for.end106:                                       ; preds = %for.body77
+  br i1 undef, label %for.body130.us.us, label %stmt.for.body130.us.us
+
+stmt.for.body130.us.us:                     ; preds = %stmt.for.body130.us.us, %for.end106
+  %_p_splat.us = shufflevector <1 x i8> zeroinitializer, <1 x i8> undef, <8 x i32> zeroinitializer
+  store <8 x i8> %_p_splat.us, <8 x i8>* undef, align 1
+  br label %stmt.for.body130.us.us
+
+for.body130.us.us:                                ; preds = %for.body130.us.us, %for.end106
+  br label %for.body130.us.us
+}
+
+declare <1 x i16> @llvm.aarch64.neon.vuqrshrn.v1i16(<1 x i32>, i32)
+
+define <8 x i16> @test_splat(i32 %l) nounwind {
+; CHECK-LABEL: test_splat:
+; CHECK: ret
+  %lhs = insertelement <1 x i32> undef, i32 %l, i32 0
+  %shift = tail call <1 x i16> @llvm.aarch64.neon.vuqrshrn.v1i16(<1 x i32> %lhs, i32 11)
+  %vec = shufflevector <1 x i16> %shift, <1 x i16> undef, <8 x i32> zeroinitializer
+  ret <8 x i16> %vec
+}
+
+
+define <8 x i16> @test_notsplat(<8 x i16> %a, <8 x i16> %b, i32 %l) nounwind {
+; CHECK-LABEL: test_notsplat:
+; CHECK: ret
+entry:
+  %lhs = insertelement <1 x i32> undef, i32 %l, i32 0
+  %shift = tail call <1 x i16> @llvm.aarch64.neon.vuqrshrn.v1i16(<1 x i32> %lhs, i32 11)
+  %vec = shufflevector <1 x i16> %shift, <1 x i16> undef, <8 x i32> <i32 undef, i32 undef, i32 undef, i32 undef, i32 0, i32 0, i32 0, i32 0>
+  ret <8 x i16> %vec
+}