Implement printing more, implement opcode output more

[oota-llvm.git] / lib / Target / X86 / X86InstrInfo.cpp

diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp
index e54883395d2d76e0f1a7b525cf4824b6cca272a7..fa3537c6482c2064f9c90adebac3e68b71ebeee1 100644 (file)
--- a/lib/Target/X86/X86InstrInfo.cpp
+++ b/lib/Target/X86/X86InstrInfo.cpp
@@ -12,7 +12,7 @@
 // descriptors
 //
 static const MachineInstrDescriptor X86Insts[] = {
-#define I(ENUM, NAME, FLAGS, TSFLAGS)   \
+#define I(ENUM, NAME, BASEOPCODE, FLAGS, TSFLAGS)   \
              { NAME,                    \
                -1, /* Always vararg */  \
                ((TSFLAGS) & X86II::Void) ? -1 : 0,  /* Result is in 0 */ \
@@ -25,3 +25,16 @@ X86InstrInfo::X86InstrInfo()
 }
 
 
+static unsigned char BaseOpcodes[] = {
+#define I(ENUM, NAME, BASEOPCODE, FLAGS, TSFLAGS) BASEOPCODE,
+#include "X86InstrInfo.def"
+};
+
+// getBaseOpcodeFor - This function returns the "base" X86 opcode for the
+// specified opcode number.
+//
+unsigned char X86InstrInfo::getBaseOpcodeFor(unsigned Opcode) const {
+  assert(Opcode < sizeof(BaseOpcodes)/sizeof(BaseOpcodes[0]) &&
+         "Opcode out of range!");
+  return BaseOpcodes[Opcode];
+}