1 files changed, 22 insertions, 0 deletions

diff --git a/test/CodeGen/X86/bitreverse.ll b/test/CodeGen/X86/bitreverse.ll
new file mode 100644
index 000000000000..e3bc8ace38ab
--- /dev/null
+++ b/test/CodeGen/X86/bitreverse.ll
@@ -0,0 +1,22 @@
+; RUN: llc -march=x86 %s -o - | FileCheck %s
+
+; These tests just check that the plumbing is in place for @llvm.bitreverse. The
+; actual output is massive at the moment as llvm.bitreverse is not yet legal.
+
+declare <2 x i16> @llvm.bitreverse.v2i16(<2 x i16>) readnone
+
+define <2 x i16> @f(<2 x i16> %a) {
+; CHECK-LABEL: f:
+; CHECK: shll
+  %b = call <2 x i16> @llvm.bitreverse.v2i16(<2 x i16> %a)
+  ret <2 x i16> %b
+}
+
+declare i8 @llvm.bitreverse.i8(i8) readnone
+
+define i8 @g(i8 %a) {
+; CHECK-LABEL: g:
+; CHECK: shlb
+  %b = call i8 @llvm.bitreverse.i8(i8 %a)
+  ret i8 %b
+}