1 files changed, 20 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/AMDGPU/unknown-processor.ll b/llvm/test/CodeGen/AMDGPU/unknown-processor.ll
new file mode 100644
index 00000000000..941f4c601e3
--- /dev/null
+++ b/llvm/test/CodeGen/AMDGPU/unknown-processor.ll
@@ -0,0 +1,20 @@
+; RUN: llc -march=amdgcn -mcpu=unknown < %s 2>&1 | FileCheck -check-prefix=ERROR -check-prefix=GCN %s
+; RUN: llc -march=r600 -mcpu=unknown < %s 2>&1 | FileCheck -check-prefix=ERROR -check-prefix=R600 %s
+
+; Should not crash when the processor is not recognized and the
+; wavefront size feature not set.
+
+; Should also not have fragments of r600 and gcn isa mixed.
+
+; ERROR: 'unknown' is not a recognized processor for this target (ignoring processor)
+
+; GCN-NOT: MOV
+; GCN: buffer_store_dword
+; GCN: ScratchSize: 8{{$}}
+
+; R600: MOV
+define void @foo() {
+  %alloca = alloca i32, align 4
+  store volatile i32 0, i32* %alloca
+  ret void
+}