1 files changed, 42 insertions, 0 deletions
diff --git a/test/CodeGen/Hexagon/restore-single-reg.ll b/test/CodeGen/Hexagon/restore-single-reg.ll
new file mode 100644
index 000000000000..8abd4a855463
--- /dev/null
+++ b/test/CodeGen/Hexagon/restore-single-reg.ll
@@ -0,0 +1,42 @@
+; RUN: llc -march=hexagon < %s | FileCheck %s
+
+target datalayout = "e-m:e-p:32:32:32-a:0-n16:32-i64:64:64-i32:32:32-i16:16:16-i1:8:8-f32:32:32-f64:64:64-v32:32:32-v64:64:64-v512:512:512-v1024:1024:1024-v2048:2048:2048"
+target triple = "hexagon"
+
+; Generate the inline restore for single register pair for functions
+; with "optsize" attribute.
+
+; CHECK-LABEL:    fred_os
+; CHECK-DAG:      memd{{.*}} = r17:16
+; CHECK-DAG:      r17:16 = memd{{.*}}
+; CHECK-DAG:      deallocframe
+; CHECK-NOT:  call __restore
+
+define i32 @fred_os(i32 %x) #0 {
+entry:
+  %call = tail call i32 @foo(i32 %x) #2
+  %call1 = tail call i32 @bar(i32 %x, i32 %call) #2
+  ret i32 %call1
+}
+
+; Generate the restoring call for single register pair for functions
+; with "minsize" attribute.
+
+; CHECK-LABEL:    fred_oz
+; CHECK-DAG:      memd{{.*}} = r17:16
+; CHECK-NOT:  r17:16 = memd{{.*}}
+; CHECK-DAG:      call __restore
+
+define i32 @fred_oz(i32 %x) #1 {
+entry:
+  %call = tail call i32 @foo(i32 %x) #2
+  %call1 = tail call i32 @bar(i32 %x, i32 %call) #2
+  ret i32 %call1
+}
+
+declare i32 @foo(i32) #2
+declare i32 @bar(i32, i32) #2
+
+attributes #0 = { nounwind optsize "disable-tail-calls"="false" }
+attributes #1 = { nounwind minsize "disable-tail-calls"="false" }
+attributes #2 = { nounwind optsize }