1 files changed, 30 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/GlobalISel/select-implicit-def.mir b/test/CodeGen/AArch64/GlobalISel/select-implicit-def.mir
new file mode 100644
index 000000000000..8604b2769ba3
--- /dev/null
+++ b/test/CodeGen/AArch64/GlobalISel/select-implicit-def.mir
@@ -0,0 +1,30 @@
+# RUN: llc -O0 -mtriple=aarch64-- -run-pass=instruction-select -verify-machineinstrs -global-isel %s -o - | FileCheck %s
+
+--- |
+  target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
+
+  define void @implicit_def() { ret void }
+...
+
+---
+# CHECK-LABEL: name: implicit_def
+name:            implicit_def
+legalized:       true
+regBankSelected: true
+# CHECK:      registers:
+# CHECK-NEXT:  - { id: 0, class: gpr32, preferred-register: '' }
+# CHECK-NEXT:  - { id: 1, class: gpr32, preferred-register: '' }
+registers:
+  - { id: 0, class: gpr }
+  - { id: 1, class: gpr }
+
+# CHECK:  body:
+# CHECK:    [[DEF:%[0-9]+]] = IMPLICIT_DEF
+# CHECK:    [[ADD:%[0-9]+]] = ADDWrr [[DEF]], [[DEF]]
+# CHECK:    %w0 = COPY [[ADD]]
+body:             |
+  bb.0:
+    %0(s32) = G_IMPLICIT_DEF
+    %1(s32) = G_ADD %0, %0
+    %w0 = COPY %1(s32)
+...