1 files changed, 38 insertions, 0 deletions
diff --git a/test/CodeGen/Thumb/copy_thumb.ll b/test/CodeGen/Thumb/copy_thumb.ll
new file mode 100644
index 0000000..528f54b
--- /dev/null
+++ b/test/CodeGen/Thumb/copy_thumb.ll
@@ -0,0 +1,38 @@
+; RUN: llc -mtriple=armv4-none--eabi < %s | FileCheck %s --check-prefix=CHECK-LOLOMOV
+; RUN: llc -mtriple=armv4t-none--eabi < %s | FileCheck %s --check-prefix=CHECK-LOLOMOV
+; RUN: llc -mtriple=armv5-none--eabi < %s | FileCheck %s --check-prefix=CHECK-LOLOMOV
+; RUN: llc -mtriple=armv6-none--eabi < %s | FileCheck %s --check-prefix=CHECK-LOLOMOV
+; RUN: llc -mtriple=armv7-none--eabi < %s | FileCheck %s --check-prefix=CHECK-LOLOMOV
+; RUN: llc -mtriple=thumbv6-none--eabi < %s | FileCheck %s --check-prefix=CHECK-LOLOMOV
+; RUN: llc -mtriple=thumbv7-none--eabi < %s | FileCheck %s --check-prefix=CHECK-LOLOMOV
+; CHECK-LOLOMOV-LABEL:  foo
+; CHECK-LOLOMOV:        mov [[TMP:r[0-7]]], [[SRC1:r[01]]]
+; CHECK-LOLOMOV-NEXT:   mov [[SRC1]], [[SRC2:r[01]]]
+; CHECK-LOLOMOV-NEXT:   mov [[SRC2]], [[TMP]]
+; CHECK-LOLOMOV-LABEL:  bar
+; CHECK-LOLOMOV-LABEL:  fnend
+; 
+; 'MOV lo, lo' in Thumb mode produces undefined results on pre-v6 hardware
+; RUN: llc -mtriple=thumbv4t-none--eabi < %s | FileCheck %s --check-prefix=CHECK-NOLOLOMOV
+; RUN: llc -mtriple=thumbv5-none--eabi < %s | FileCheck %s --check-prefix=CHECK-NOLOLOMOV
+; CHECK-NOLOLOMOV-LABEL: foo
+; CHECK-NOLOLOMOV-NOT:   mov [[TMP:r[0-7]]], [[SRC1:r[01]]]
+; CHECK-NOLOLOMOV:       push  {[[SRC1:r[01]]]}
+; CHECK-NOLOLOMOV-NEXT:  pop {[[TMP:r[0-7]]]}
+; CHECK-NOLOLOMOV-NOT:   mov [[TMP:r[0-7]]], [[SRC1:r[01]]]
+; CHECK-NOLOLOMOV:       push  {[[SRC2:r[01]]]}
+; CHECK-NOLOLOMOV-NEXT:  pop {[[SRC1]]}
+; CHECK-NOLOLOMOV-NOT:   mov [[TMP:r[0-7]]], [[SRC1:r[01]]]
+; CHECK-NOLOLOMOV:       push  {[[TMP]]}
+; CHECK-NOLOLOMOV-NEXT:  pop {[[SRC2]]}
+; CHECK-NOLOLOMOV-LABEL: bar
+; CHECK-NOLOLOMOV-LABEL: fnend
+
+declare void @bar(i32, i32)
+
+define void @foo(i32 %a, i32 %b) {
+entry:
+  call void @bar(i32 %b, i32 %a);
+  ret void
+}
+