Initial AVX support for some instructions. No patterns matched

yet, only assembly encoding support.

llvm-svn: 105521

1 files changed, 18 insertions, 4 deletions

diff --git a/llvm/lib/Target/X86/X86InstrInfo.h b/llvm/lib/Target/X86/X86InstrInfo.h
index f5c802288d4..9016c16ec43 100644
--- a/llvm/lib/Target/X86/X86InstrInfo.h
+++ b/llvm/lib/Target/X86/X86InstrInfo.h
@@ -417,22 +417,36 @@ namespace X86II {
 
     OpcodeShift   = 24,
     OpcodeMask    = 0xFF << OpcodeShift
+
   };
   
+  // FIXME: The enum opcode space is over and more bits are needed. Anywhere
+  // those enums below are used, TSFlags must be shifted right by 32 first.
+  enum {
+    //===------------------------------------------------------------------===//
+    // VEX_4V - VEX prefixes are instruction prefixes used in AVX.
+    // VEX_4V is used to specify an additional AVX/SSE register. Several 2
+    // address instructions in SSE are represented as 3 address ones in AVX
+    // and the additional register is encoded in VEX_VVVV prefix.
+    //
+    VEXShift    = 0,
+    VEX_4V      = 1 << VEXShift
+  };
+
   // getBaseOpcodeFor - This function returns the "base" X86 opcode for the
   // specified machine instruction.
   //
-  static inline unsigned char getBaseOpcodeFor(unsigned TSFlags) {
+  static inline unsigned char getBaseOpcodeFor(uint64_t TSFlags) {
     return TSFlags >> X86II::OpcodeShift;
   }
   
-  static inline bool hasImm(unsigned TSFlags) {
+  static inline bool hasImm(uint64_t TSFlags) {
     return (TSFlags & X86II::ImmMask) != 0;
   }
   
   /// getSizeOfImm - Decode the "size of immediate" field from the TSFlags field
   /// of the specified instruction.
-  static inline unsigned getSizeOfImm(unsigned TSFlags) {
+  static inline unsigned getSizeOfImm(uint64_t TSFlags) {
     switch (TSFlags & X86II::ImmMask) {
     default: assert(0 && "Unknown immediate size");
     case X86II::Imm8:
@@ -446,7 +460,7 @@ namespace X86II {
   
   /// isImmPCRel - Return true if the immediate of the specified instruction's
   /// TSFlags indicates that it is pc relative.
-  static inline unsigned isImmPCRel(unsigned TSFlags) {
+  static inline unsigned isImmPCRel(uint64_t TSFlags) {
     switch (TSFlags & X86II::ImmMask) {
       default: assert(0 && "Unknown immediate size");
       case X86II::Imm8PCRel: