clean up load and stores alot

[oota-llvm.git] / lib / Target / Target.td

diff --git a/lib/Target/Target.td b/lib/Target/Target.td
index 7219395769e6c9e77d779f5a132629f78a811be1..bdaa05bf518e8ee8ec249bd7143d99d8e31984e9 100644 (file)
--- a/lib/Target/Target.td
+++ b/lib/Target/Target.td
@@ -133,6 +133,8 @@ class Instruction {
   bit isLoad       = 0;     // Is this instruction a load instruction?
   bit isStore      = 0;     // Is this instruction a store instruction?
   bit isTwoAddress = 0;     // Is this a two address instruction?
+  bit isConvertibleToThreeAddress = 0;  // Can this 2-addr instruction promote?
+  bit isCommutable = 0;     // Is this 3 operand instruction commutable?
   bit isTerminator = 0;     // Is this part of the terminator for a basic block?
   bit hasDelaySlot = 0;     // Does this instruction have an delay slot?
 }
@@ -170,6 +172,12 @@ class InstrInfo {
   //
   list<string> TSFlagsFields = [];
   list<int>    TSFlagsShifts = [];
+
+  // Target can specify its instructions in either big or little-endian formats.
+  // For instance, while both Sparc and PowerPC are big-endian platforms, the
+  // Sparc manual specifies its instructions in the format [31..0] (big), while
+  // PowerPC specifies them using the format [0..31] (little).
+  bit isLittleEndianEncoding = 0;
 }
 
 //===----------------------------------------------------------------------===//
@@ -188,6 +196,14 @@ class AsmWriter {
   // InstFormatName - AsmWriters can specify the name of the format string to
   // print instructions with.
   string InstFormatName = "AsmString";
+
+  // Variant - AsmWriters can be of multiple different variants.  Variants are
+  // used to support targets that need to emit assembly code in ways that are
+  // mostly the same for different targets, but have minor differences in
+  // syntax.  If the asmstring contains {|} characters in them, this integer
+  // will specify which alternative to use.  For example "{x|y|z}" with Variant
+  // == 1, will expand to "y".
+  int Variant = 0;
 }
 def DefaultAsmWriter : AsmWriter;
 
@@ -207,8 +223,8 @@ class Target {
   // InstructionSet - Instruction set description for this target.
   InstrInfo InstructionSet;
 
-  // AssemblyWriter - The AsmWriter instance to use for this target.
-  AsmWriter AssemblyWriter = DefaultAsmWriter;
+  // AssemblyWriters - The AsmWriter instances available for this target.
+  list<AsmWriter> AssemblyWriters = [DefaultAsmWriter];
 }