* Introduce new RTL expression type CONS-NON-POINTER and change

  appropriate instances of CONS-POINTER to use the new type.

* Replace RTL expression type @ADDRESS->FLOAT with new type
  OBJECT->FLOAT.

* Introduce new internal switch USE-PRE/POST-INCREMENT?.  Change code
  generation of in-line consing to pay attention to this switch.

* Merge common parts of "machine/make" into new file "base/make".

On MIPS:

* Change code sequence that assigns type codes to assume that the type
  field has a known value.  This eliminates one instruction in every
  type-code assignment.  It assumes that the data segment bits have a
  certain value, but the microcode already does this.

* Cache immediate constants in registers, and remember which registers
  contain which constants.  (This should be improved by noticing when
  arithmetic operations are done on known constants and cacheing the
  results.)

* Set USE-PRE/POST-INCREMENT? to false, saving one instruction in
  every CONS, and multiple instructions in each call to VECTOR.

diff --git a/v7/src/compiler/machines/mips/machin.scm b/v7/src/compiler/machines/mips/machin.scm
index 13273b8fefa57f019f727f36b7d76d8d3da6d4db..fb9ad2edf55adfaecd24525fca090606ec3b4714 100644 (file)
--- a/v7/src/compiler/machines/mips/machin.scm
+++ b/v7/src/compiler/machines/mips/machin.scm
@@ -1,7 +1,6 @@
 #| -*-Scheme-*-
 
-$Header: /Users/cph/tmp/foo/mit-scheme/mit-scheme/v7/src/compiler/machines/mips/machin.scm,v 1.5 1991/10/25 00:13:12 cph Exp $
-$MC68020-Header: machin.scm,v 4.22 90/05/03 15:17:20 GMT jinx Exp $
+$Header: /Users/cph/tmp/foo/mit-scheme/mit-scheme/v7/src/compiler/machines/mips/machin.scm,v 1.6 1991/10/25 12:24:32 cph Exp $
 
 Copyright (c) 1988-91 Massachusetts Institute of Technology
 
@@ -39,7 +38,7 @@ MIT in each case. |#
 \f
 ;;;; Architecture Parameters
 
-(define use-pre/post-increment? true)
+(define use-pre/post-increment? false)
 (define endianness 'LITTLE)
 (define-integrable addressing-granularity 8)
 (define-integrable scheme-object-width 32)