OpenE2K/gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

pdp11.h: Use optimize_size for space optimizations.

Browse Source 
* pdp11.h: Use optimize_size for space optimizations.
	* pdp11.c: Likewise.
	* pdp11.md: Likewise.

From-SVN: r24082
This commit is contained in:
Joseph Myers 1998-12-03 17:40:21 -07:00 committed by Jeff Law
parent d1a0959019
commit f4190acc20
4 changed files with 14 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
gcc/ChangeLog
View File

@ -14,6 +14,10 @@ Thu Dec 3 11:19:50 1998 Mike Stump <mrs@wrs.com>
1998-12-03 Joseph S. Myers <jsm28@cam.ac.uk>
* pdp11.h: Use optimize_size for space optimizations.
* pdp11.c: Likewise.
* pdp11.md: Likewise.
* pdp11.h (TARGET_40_PLUS): Fix typo.
Thu Dec 3 11:48:32 1998 Jeffrey A Law (law@cygnus.com)

6
gcc/config/pdp11/pdp11.c
View File

@ -1115,7 +1115,7 @@ output_block_move(operands)
char buf[200];
if (GET_CODE(operands[2]) == CONST_INT
&& TARGET_TIME)
&& ! optimize_size)
{
if (INTVAL(operands[2]) < 16
&& INTVAL(operands[3]) == 1)
@ -1257,7 +1257,7 @@ output_block_move(operands)
bgt x
*/
if (TARGET_SPACE)
if (optimize_size)
goto generate_compact_code;
output_asm_insn("asr %4", operands);
@ -1308,7 +1308,7 @@ output_block_move(operands)
*/
if (TARGET_SPACE)
if (optimize_size)
goto generate_compact_code;
output_asm_insn("asr %4", operands);

18
gcc/config/pdp11/pdp11.h
View File

@ -89,9 +89,6 @@ extern int target_flags;
/* this is just to play around and check what code gcc generates */ \
{ "branch-expensive", 256}, \
{ "branch-cheap", -256}, \
/* optimize for space instead of time - just in a couple of places */ \
{ "space", 512 }, \
{ "time", -512 }, \
/* split instruction and data memory? */ \
{ "split", 1024 }, \
{ "no-split", -1024 }, \
@ -124,9 +121,6 @@ extern int target_flags;
#define TARGET_BRANCH_EXPENSIVE (target_flags & 256)
#define TARGET_BRANCH_CHEAP (!TARGET_BRANCH_EXPENSIVE)
#define TARGET_SPACE (target_flags & 512)
#define TARGET_TIME (! TARGET_SPACE)
#define TARGET_SPLIT (target_flags & 1024)
#define TARGET_NOSPLIT (! TARGET_SPLIT)
@ -1315,31 +1309,31 @@ JMP FUNCTION 0x0058 0x0000 <- FUNCTION
there is something wrong in MULT because MULT is not
as cheap as total = 2 even if we can shift!
if TARGET_SPACE make mult etc cheap, but not 1, so when
if optimizing for size make mult etc cheap, but not 1, so when
in doubt the faster insn is chosen.
*/
#define RTX_COSTS(X,CODE,OUTER_CODE) \
case MULT: \
if (TARGET_SPACE) \
if (optimize_size) \
total = COSTS_N_INSNS(2); \
else \
total = COSTS_N_INSNS (11); \
break; \
case DIV: \
if (TARGET_SPACE) \
if (optimize_size) \
total = COSTS_N_INSNS(2); \
else \
total = COSTS_N_INSNS (25); \
break; \
case MOD: \
if (TARGET_SPACE) \
if (optimize_size) \
total = COSTS_N_INSNS(2); \
else \
total = COSTS_N_INSNS (26); \
break; \
case ABS: \
/* equivalent to length, so same for TARGET_SPACE */ \
/* equivalent to length, so same for optimize_size */ \
total = COSTS_N_INSNS (3); \
break; \
case ZERO_EXTEND: \
@ -1358,7 +1352,7 @@ JMP FUNCTION 0x0058 0x0000 <- FUNCTION
case ASHIFT: \
case LSHIFTRT: \
case ASHIFTRT: \
if (TARGET_SPACE) \
if (optimize_size) \
total = COSTS_N_INSNS(1); \
else if (GET_MODE(X) == QImode) \
{ \

2
gcc/config/pdp11/pdp11.md
View File

@ -1432,7 +1432,7 @@
[(set (match_operand:HI 0 "general_operand" "=r")
(ashift:HI (match_operand:HI 1 "general_operand" "0")
(match_operand:HI 2 "expand_shift_operand" "O")))]
"TARGET_TIME"
"! optimize_size"
"*
{
register int i;