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-rw-r--r--lib/Target/X86/X86InstrInfo.td3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td
index d7a55057c4..560cafe081 100644
--- a/lib/Target/X86/X86InstrInfo.td
+++ b/lib/Target/X86/X86InstrInfo.td
@@ -1147,6 +1147,9 @@ def LOCK_PREFIX : I<0xF0, RawFrm, (outs), (ins), "lock", []>;
// Rex64 instruction prefix
def REX64_PREFIX : I<0x48, RawFrm, (outs), (ins), "rex64", []>;
+// Data16 instruction prefix
+def DATA16_PREFIX : I<0x66, RawFrm, (outs), (ins), "data16", []>;
+
// Repeat string operation instruction prefixes
// These uses the DF flag in the EFLAGS register to inc or dec ECX
let Defs = [ECX], Uses = [ECX,EFLAGS] in {