[GlobalISel] Don't fall back to FastISel.

Apparently checking the pass structure isn't enough to ensure that we don't fall
back to FastISel, as it's set up as part of the SelectionDAGISel.

llvm-svn: 323369

1 files changed, 10 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/AArch64/GlobalISel/fallback-nofastisel.ll b/llvm/test/CodeGen/AArch64/GlobalISel/fallback-nofastisel.ll
new file mode 100644
index 00000000000..84d8faf62c8
--- /dev/null
+++ b/llvm/test/CodeGen/AArch64/GlobalISel/fallback-nofastisel.ll
@@ -0,0 +1,10 @@
+; RUN: llc -mtriple=aarch64_be-- %s -o /dev/null -debug-only=isel -O0 2>&1 | FileCheck %s
+
+; This test uses big endian in order to force an abort since it's not currently supported for GISel.
+; The purpose is to check that we don't fall back to FastISel. Checking the pass structure is insufficient
+; because the FastISel is set up in the SelectionDAGISel, so it doesn't appear on the pass structure.
+
+; CHECK-NOT: Enabling fast-ise
+define void @empty() {
+  ret void
+}