commit ef93cecd80ebdecb0ea2b2c316370998151308e2
author Anton Korobeynikov <asl@math.spbu.ru> Sat Oct 11 19:09:15 2008 +0000
committer Anton Korobeynikov <asl@math.spbu.ru> Sat Oct 11 19:09:15 2008 +0000
tree 76f2a76d2e54855b6868f413cd463c8b2288c000
parent b7dfaf955b7fc5dfa72514d7e5427939d33a5033

Add ability to override segment (mostly for code emitter purposes).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57380 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/X86/X86CodeEmitter.cpp

diff --git a/lib/Target/X86/X86CodeEmitter.cpp b/lib/Target/X86/X86CodeEmitter.cpp
index 37c1e99..16124fa 100644
--- a/lib/Target/X86/X86CodeEmitter.cpp
+++ b/lib/Target/X86/X86CodeEmitter.cpp
@@ -412,6 +412,16 @@
   // Emit the lock opcode prefix as needed.
   if (Desc->TSFlags & X86II::LOCK) MCE.emitByte(0xF0);
 
+  // Emit segment overrid opcode prefix as needed.
+  switch (Desc->TSFlags & X86II::SegOvrMask) {
+  case X86II::FS:
+    MCE.emitByte(0x64);
+    break;
+  case X86II::GS:
+    MCE.emitByte(0x65);
+    break;
+  }
+
   // Emit the repeat opcode prefix as needed.
   if ((Desc->TSFlags & X86II::Op0Mask) == X86II::REP) MCE.emitByte(0xF3);