Assorted trivial optimizations

   text	   data	    bss	    dec	    hex	filename
 236448	    672	  19044	 256164	  3e8a4	strace.before
 236360	    672	  19044	 256076	  3e84c	strace

* file.c (sprintmode): Use smaller static buffer, eliminate strlen call.
(sprinttime): Use smaller static buffer.
(printstat_sparc64): Coalesce two printing calls into one.
(printstat_powerpc32): Likewise.
(printcompat_statfs6): Likewise.
(sys_utime): Do not fetch personality_wordsize[current_personality]
repeatedly - cache it in local variable instead.
* process.c (printargv): Likewise.
* resource.c (sprintrlim): Return const char*, not char*. This allows
to eliminate sprintf(buf, "RLIM_INFINITY"). Use smaller static buffer.
(sprintrlim64): Likewise.
* strace.c (strerror): Use smaller static buffer.
(strsignal): Likewise.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/process.c b/process.c
index 621cad8..a6705ec 100644
--- a/process.c
+++ b/process.c
@@ -1007,21 +1007,21 @@ printargv(struct tcb *tcp, long addr)
 	} cp;
 	const char *sep;
 	int n = 0;
+	unsigned wordsize = personality_wordsize[current_personality];
 
 	cp.p64 = 1;
 	for (sep = ""; !abbrev(tcp) || n < max_strlen / 2; sep = ", ", ++n) {
-		if (umoven(tcp, addr, personality_wordsize[current_personality],
-			   cp.data) < 0) {
+		if (umoven(tcp, addr, wordsize, cp.data) < 0) {
 			tprintf("%#lx", addr);
 			return;
 		}
-		if (personality_wordsize[current_personality] == 4)
+		if (wordsize == 4)
 			cp.p64 = cp.p32;
 		if (cp.p64 == 0)
 			break;
 		tprints(sep);
 		printstr(tcp, cp.p64, -1);
-		addr += personality_wordsize[current_personality];
+		addr += wordsize;
 	}
 	if (cp.p64)
 		tprintf("%s...", sep);