[patch] sim: bfin: speed up all insn testcases slightly

[Mike Frysinger]

The main body of the "all insn" test is executed once per tested insn, and we 
test millions of insns here.  Any shrinkage we can do in this loop will speed 
things up nicely (since it's multiplied per tested insn).

To that end, simplify the end-of-table test into one less insn, and omit the 
SSYNC when we build for the sim.  When we build to run on the hardware, this 
insn matters, but the sim doesn't have write store buffers in the chip that 
might get in the way (memory writes are atomic).

Committed.
-mike

2013-06-23  Mike Frysinger  <vapier@gentoo.org>

    * se_allopcodes.h (_match): Simplify register test to one less insn.
    Omit the SSYNC insn when compiling for the sim.

--- a/sim/testsuite/sim/bfin/se_allopcodes.h
+++ b/sim/testsuite/sim/bfin/se_allopcodes.h
@@ -102,8 +102,7 @@ _match:
 	se_all_load_table
 
 	/* is this the end of the table? */
-	R4 = 0;
-	CC = R4 == R7;
+	CC = R7 == 0;
 	IF CC jump _new_instruction;
 
 	/* is the opcode (R0) greater than the 2nd entry in the table (R6) */
@@ -168,8 +167,10 @@ _legal_instruction:
 _next_instruction:
 	se_all_next_insn
 
+.ifdef BFIN_JTAG
 	/* Make sure the opcode isn't in a write buffer */
 	SSYNC;
+.endif
 
 	R1 = P5;
 	RETX = R1;
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 836 bytes
Desc: This is a digitally signed message part.
URL: <http://sourceware.org/pipermail/gdb-patches/attachments/20130624/0039667e/attachment.sig>