1 files changed, 49 insertions, 0 deletions
diff --git a/test/MC/X86/x86_64-rand-encoding.s b/test/MC/X86/x86_64-rand-encoding.s
new file mode 100644
index 0000000000..3a8cb817bc
--- /dev/null
+++ b/test/MC/X86/x86_64-rand-encoding.s
@@ -0,0 +1,49 @@
+// RUN: llvm-mc -triple x86_64-unknown-unknown --show-encoding %s | FileCheck %s
+
+// CHECK: rdrandw %ax
+// CHECK: encoding: [0x66,0x0f,0xc7,0xf0]
+          rdrand %ax
+
+// CHECK: rdrandl %eax
+// CHECK: encoding: [0x0f,0xc7,0xf0]
+          rdrand %eax
+
+// CHECK: rdrandq %rax
+// CHECK: encoding: [0x48,0x0f,0xc7,0xf0]
+          rdrand %rax
+
+// CHECK: rdrandw %r11w
+// CHECK: encoding: [0x66,0x41,0x0f,0xc7,0xf3]
+          rdrand %r11w
+
+// CHECK: rdrandl %r11d
+// CHECK: encoding: [0x41,0x0f,0xc7,0xf3]
+          rdrand %r11d
+
+// CHECK: rdrandq %r11
+// CHECK: encoding: [0x49,0x0f,0xc7,0xf3]
+          rdrand %r11
+
+// CHECK: rdseedw %ax
+// CHECK: encoding: [0x66,0x0f,0xc7,0xf8]
+          rdseed %ax
+
+// CHECK: rdseedl %eax
+// CHECK: encoding: [0x0f,0xc7,0xf8]
+          rdseed %eax
+
+// CHECK: rdseedq %rax
+// CHECK: encoding: [0x48,0x0f,0xc7,0xf8]
+          rdseed %rax
+
+// CHECK: rdseedw %r11w
+// CHECK: encoding: [0x66,0x41,0x0f,0xc7,0xfb]
+          rdseed %r11w
+
+// CHECK: rdseedl %r11d
+// CHECK: encoding: [0x41,0x0f,0xc7,0xfb]
+          rdseed %r11d
+
+// CHECK: rdseedq %r11
+// CHECK: encoding: [0x49,0x0f,0xc7,0xfb]
+          rdseed %r11