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authorMike Frysinger <vapier@gentoo.org>2012-04-03 03:37:26 +0000
committerMike Frysinger <vapier@gentoo.org>2012-04-03 03:37:26 +0000
commit33af8d33f9aa35ce8874c4c52fd1d8033b56f9f7 (patch)
tree430f7be47b1a3cb0b01a5695bba56ec2d72cbd69 /ld/Makefile.am
parent9549af6ae699e5e64591cd0245ea5b2861d6f397 (diff)
downloadbinutils-redhat-33af8d33f9aa35ce8874c4c52fd1d8033b56f9f7.tar.gz
ld: optimize vfinfo output slightly
ld atm ends up calling the write() syscall on every char when displaying an error message. For example: $ echo 'main(){foo();}' | strace -f -ewrite gcc -x c -o /dev/null - ... [pid 13035] write(2, ":", 1) = 1 [pid 13035] write(2, " ", 1) = 1 [pid 13035] write(2, "I", 1) = 1 [pid 13035] write(2, "n", 1) = 1 [pid 13035] write(2, " ", 1) = 1 [pid 13035] write(2, "f", 1) = 1 [pid 13035] write(2, "u", 1) = 1 [pid 13035] write(2, "n", 1) = 1 [pid 13035] write(2, "c", 1) = 1 [pid 13035] write(2, "t", 1) = 1 [pid 13035] write(2, "i", 1) = 1 [pid 13035] write(2, "o", 1) = 1 [pid 13035] write(2, "n", 1) = 1 [pid 13035] write(2, " ", 1) = 1 [pid 13035] write(2, "`", 1) = 1 ... That's just to write ": In function `main':". A slight optimization in the vfinfo() func gives a much more reasonable syscall footprint: ... write(2, ": In function `", 15) = 15 ... Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'ld/Makefile.am')
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