[XCore] Fix expansion of 64 bit add/sub. Don't custom expand

these operations if ladd/lsub are not available on the current
subtarget.

llvm-svn: 59305

1 files changed, 12 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/XCore/addsub64.ll b/llvm/test/CodeGen/XCore/addsub64.ll
new file mode 100644
index 00000000000..41224fca1cc
--- /dev/null
+++ b/llvm/test/CodeGen/XCore/addsub64.ll
@@ -0,0 +1,12 @@
+; RUN: llvm-as < %s | llc -march=xcore -mcpu=xs1b-generic > %t1.s
+; RUN: grep ladd %t1.s | count 2
+; RUN: grep lsub %t1.s | count 2
+define i64 @add64(i64 %a, i64 %b) {
+	%result = add i64 %a, %b
+	ret i64 %result
+}
+
+define i64 @sub64(i64 %a, i64 %b) {
+	%result = sub i64 %a, %b
+	ret i64 %result
+}