Quick compiler: allocate doubles as doubles

Significant refactoring of register handling to unify usage across
all targets & 32/64 backends.

Reworked RegStorage encoding to allow expanded use of
x86 xmm registers; removed vector registers as a separate
register type.  Reworked RegisterInfo to describe aliased
physical registers.  Eliminated quite a bit of target-specific code
and generalized common code.

Use of RegStorage instead of int for registers now propagated down
to the NewLIRx() level.  In future CLs, the NewLIRx() routines will
be replaced with versions that are explicit about what kind of
operand they expect (RegStorage, displacement, etc.).  The goal
is to eventually use RegStorage all the way to the assembly phase.

TBD: MIPS needs verification.
TBD: Re-enable liveness tracking.

Change-Id: I388c006d5fa9b3ea72db4e37a19ce257f2a15964

1 files changed, 9 insertions, 11 deletions

diff --git a/compiler/dex/compiler_enums.h b/compiler/dex/compiler_enums.h
index ba4b5c356a..cbb2c300f2 100644
--- a/compiler/dex/compiler_enums.h
+++ b/compiler/dex/compiler_enums.h
@@ -27,6 +27,15 @@ enum RegisterClass {
   kAnyReg,
 };
 
+enum BitsUsed {
+  kSize32Bits,
+  kSize64Bits,
+  kSize128Bits,
+  kSize256Bits,
+  kSize512Bits,
+  kSize1024Bits,
+};
+
 enum SpecialTargetRegister {
   kSelf,            // Thread pointer.
   kSuspend,         // Used to reduce suspend checks for some targets.
@@ -56,17 +65,6 @@ enum RegLocationType {
   kLocInvalid
 };
 
-/**
- * Support for vector registers.  Initially used for x86 floats.  This will be used
- * to replace the assumption that a double takes up 2 single FP registers
- */
-enum VectorLengthType {
-  kVectorNotUsed = 0,   // This value is NOT in a vector register.
-  kVectorLength4,       // The value occupies 4 bytes in a vector register.
-  kVectorLength8,       // The value occupies 8 bytes in a vector register.
-  kVectorLength16       // The value occupies 16 bytes in a vector register (unused now).
-};
-
 enum BBType {
   kNullBlock,
   kEntryBlock,