obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
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1 files changed, 118 insertions, 0 deletions

diff --git a/gcc/config/sparc/niagara.md b/gcc/config/sparc/niagara.md
new file mode 100644
index 000000000..e73c65b80
--- /dev/null
+++ b/gcc/config/sparc/niagara.md
@@ -0,0 +1,118 @@
+;; Scheduling description for Niagara.
+;;   Copyright (C) 2006, 2007 Free Software Foundation, Inc.
+;;
+;; This file is part of GCC.
+;;
+;; GCC is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 3, or (at your option)
+;; any later version.
+;;
+;; GCC is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with GCC; see the file COPYING3.  If not see
+;; <http://www.gnu.org/licenses/>.
+
+;; Niagara is a single-issue processor.
+
+(define_automaton "niagara_0")
+
+(define_cpu_unit "niag_pipe" "niagara_0")
+
+(define_insn_reservation "niag_5cycle" 5
+  (and (eq_attr "cpu" "niagara")
+    (eq_attr "type" "multi,flushw,iflush,trap"))
+  "niag_pipe*5")
+
+(define_insn_reservation "niag_4cycle" 4
+  (and (eq_attr "cpu" "niagara")
+    (eq_attr "type" "savew"))
+  "niag_pipe*4")
+
+/* Most basic operations are single-cycle. */
+(define_insn_reservation "niag_ialu" 1
+ (and (eq_attr "cpu" "niagara")
+   (eq_attr "type" "ialu,shift,compare,cmove"))
+ "niag_pipe")
+
+(define_insn_reservation "niag_imul" 11
+ (and (eq_attr "cpu" "niagara")
+   (eq_attr "type" "imul"))
+ "niag_pipe*11")
+
+(define_insn_reservation "niag_idiv" 72
+ (and (eq_attr "cpu" "niagara")
+   (eq_attr "type" "idiv"))
+ "niag_pipe*72")
+
+(define_insn_reservation "niag_branch" 3
+  (and (eq_attr "cpu" "niagara")
+    (eq_attr "type" "call,sibcall,call_no_delay_slot,uncond_branch,branch"))
+  "niag_pipe*3")
+
+(define_insn_reservation "niag_3cycle_load" 3
+  (and (eq_attr "cpu" "niagara")
+    (eq_attr "type" "load"))
+  "niag_pipe*3")
+
+(define_insn_reservation "niag_9cycle_load" 9
+  (and (eq_attr "cpu" "niagara")
+    (eq_attr "type" "fpload"))
+  "niag_pipe*9")
+
+(define_insn_reservation "niag_1cycle_store" 1
+  (and (eq_attr "cpu" "niagara")
+    (eq_attr "type" "store"))
+  "niag_pipe")
+
+(define_insn_reservation "niag_8cycle_store" 8
+  (and (eq_attr "cpu" "niagara")
+    (eq_attr "type" "fpstore"))
+  "niag_pipe*8")
+
+/* Things incorrectly modelled here:
+ *  FPADD{s,d}: 26 cycles
+ *  FPSUB{s,d}: 26 cycles
+ *  FABSD: 26 cycles
+ *  F{s,d}TO{s,d}: 26 cycles
+ *  F{s,d}TO{i,x}: 26 cycles
+ *  FSMULD: 29 cycles
+ */
+(define_insn_reservation "niag_fmov" 8
+  (and (eq_attr "cpu" "niagara")
+    (eq_attr "type" "fpmove,fpcmove,fpcrmove"))
+  "niag_pipe*8")
+
+(define_insn_reservation "niag_fpcmp" 26
+  (and (eq_attr "cpu" "niagara")
+    (eq_attr "type" "fpcmp"))
+  "niag_pipe*26")
+
+(define_insn_reservation "niag_fmult" 29
+ (and (eq_attr "cpu" "niagara")
+    (eq_attr "type" "fpmul"))
+  "niag_pipe*29")
+
+(define_insn_reservation "niag_fdivs" 54
+  (and (eq_attr "cpu" "niagara")
+    (eq_attr "type" "fpdivs"))
+  "niag_pipe*54")
+
+(define_insn_reservation "niag_fdivd" 83
+  (and (eq_attr "cpu" "niagara")
+    (eq_attr "type" "fpdivd"))
+  "niag_pipe*83")
+
+/* Things incorrectly modelled here:
+ *  FPADD{16,32}: 10 cycles
+ *  FPSUB{16,32}: 10 cycles
+ *  FALIGNDATA: 10 cycles
+ */
+(define_insn_reservation "niag_vis" 8
+  (and (eq_attr "cpu" "niagara")
+    (eq_attr "type" "fga,fgm_pack,fgm_mul,fgm_cmp,fgm_pdist"))
+  "niag_pipe*8")