1 files changed, 27 insertions, 0 deletions
diff --git a/test/CodeGen/X86/h-register-store.ll b/test/CodeGen/X86/h-register-store.ll
new file mode 100644
index 000000000000..e8672422a7b0
--- /dev/null
+++ b/test/CodeGen/X86/h-register-store.ll
@@ -0,0 +1,27 @@
+; RUN: llvm-as < %s | llc -march=x86-64 > %t
+; RUN: grep mov %t | count 6
+; RUN: grep {movb	%ah, (%rsi)} %t | count 3
+; RUN: llvm-as < %s | llc -march=x86 > %t
+; RUN: grep mov %t | count 3
+; RUN: grep {movb	%ah, (%e} %t | count 3
+
+; Use h-register extract and store.
+
+define void @foo16(i16 inreg %p, i8* inreg %z) nounwind {
+  %q = lshr i16 %p, 8
+  %t = trunc i16 %q to i8
+  store i8 %t, i8* %z
+  ret void
+}
+define void @foo32(i32 inreg %p, i8* inreg %z) nounwind {
+  %q = lshr i32 %p, 8
+  %t = trunc i32 %q to i8
+  store i8 %t, i8* %z
+  ret void
+}
+define void @foo64(i64 inreg %p, i8* inreg %z) nounwind {
+  %q = lshr i64 %p, 8
+  %t = trunc i64 %q to i8
+  store i8 %t, i8* %z
+  ret void
+}