Compress flags in X86 op folding to reduce space in static tables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159073 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 16 insertions, 16 deletions

diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp
index f2c696b..a566a36 100644
--- a/lib/Target/X86/X86InstrInfo.cpp
+++ b/lib/Target/X86/X86InstrInfo.cpp
@@ -55,39 +55,39 @@ ReMatPICStubLoad("remat-pic-stub-load",
 
 enum {
   // Select which memory operand is being unfolded.
-  // (stored in bits 0 - 7)
+  // (stored in bits 0 - 3)
   TB_INDEX_0    = 0,
   TB_INDEX_1    = 1,
   TB_INDEX_2    = 2,
   TB_INDEX_3    = 3,
-  TB_INDEX_MASK = 0xff,
-
-  // Minimum alignment required for load/store.
-  // Used for RegOp->MemOp conversion.
-  // (stored in bits 8 - 15)
-  TB_ALIGN_SHIFT = 8,
-  TB_ALIGN_NONE  =    0 << TB_ALIGN_SHIFT,
-  TB_ALIGN_16    =   16 << TB_ALIGN_SHIFT,
-  TB_ALIGN_32    =   32 << TB_ALIGN_SHIFT,
-  TB_ALIGN_MASK  = 0xff << TB_ALIGN_SHIFT,
+  TB_INDEX_MASK = 0xf,
 
   // Do not insert the reverse map (MemOp -> RegOp) into the table.
   // This may be needed because there is a many -> one mapping.
-  TB_NO_REVERSE   = 1 << 16,
+  TB_NO_REVERSE   = 1 << 4,
 
   // Do not insert the forward map (RegOp -> MemOp) into the table.
   // This is needed for Native Client, which prohibits branch
   // instructions from using a memory operand.
-  TB_NO_FORWARD   = 1 << 17,
+  TB_NO_FORWARD   = 1 << 5,
 
-  TB_FOLDED_LOAD  = 1 << 18,
-  TB_FOLDED_STORE = 1 << 19
+  TB_FOLDED_LOAD  = 1 << 6,
+  TB_FOLDED_STORE = 1 << 7,
+
+  // Minimum alignment required for load/store.
+  // Used for RegOp->MemOp conversion.
+  // (stored in bits 8 - 15)
+  TB_ALIGN_SHIFT = 8,
+  TB_ALIGN_NONE  =    0 << TB_ALIGN_SHIFT,
+  TB_ALIGN_16    =   16 << TB_ALIGN_SHIFT,
+  TB_ALIGN_32    =   32 << TB_ALIGN_SHIFT,
+  TB_ALIGN_MASK  = 0xff << TB_ALIGN_SHIFT
 };
 
 struct X86OpTblEntry {
   uint16_t RegOp;
   uint16_t MemOp;
-  uint32_t Flags;
+  uint16_t Flags;
 };
 
 X86InstrInfo::X86InstrInfo(X86TargetMachine &tm)