https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85923
--- Comment #5 from Sami Kantoluoto <sami.kantoluoto at embedtronics dot fi> ---
When compiled with
$ gcc-arm-none-eabi-4_6-2012q4/bin/arm-none-eabi-gcc -v -save-temps -Wall
-Werror -Os -c skipblk.c -o skipblk.o
The following assembly is generated:
skipblk:
@ Function supports interworking.
@ args = 0, pretend = 0, frame = 0
@ frame_needed = 0, uses_anonymous_args = 0
@ link register save eliminated.
ldr r3, .L4
str r4, [sp, #-4]!
ldr r1, [r3, #0]
mov r3, #0
b .L2
.L3:
add r2, r2, #1
str r2, [r0, #0]
add r3, r3, #1
.L2:
ldr r2, [r0, #0]
ldr r4, [r1, #0]
ldrb ip, [r2, #0] @ zero_extendqisi2
ldrb ip, [r4, ip] @ zero_extendqisi2
tst ip, #8
bne .L3
mov r0, r3
ldmfd sp!, {r4}
bx lr
.L5:
.align 2
.L4:
.word _ctype_tab_ptr
Which seems ok to me.
Compiler:
$ arm-none-eabi-gcc -v
Using built-in specs.
COLLECT_GCC=/emb/gcc-arm-none-eabi-4_6-2012q4/bin/arm-none-eabi-gcc
COLLECT_LTO_WRAPPER=/work/emb/gcc-arm-none-eabi-4_6-2012q4/bin/../libexec/gcc/arm-none-eabi/4.6.2/lto-wrapper
Target: arm-none-eabi
Configured with: /home/build/work/jenkins-daily-build/src/gcc/configure
--build=i686-linux-gnu --host=i686-linux-gnu --target=arm-none-eabi
--prefix=/home/build/work/jenkins-daily-build/install-linux
--enable-languages=c,c++ --disable-decimal-float --disable-libffi
--disable-libgomp --disable-libmudflap --disable-libquadmath --disable-libssp
--disable-libstdcxx-pch --disable-lto --disable-nls --disable-shared
--disable-threads --disable-tls --with-gnu-as --with-gnu-ld --with-newlib
--with-headers=yes
--with-sysroot=/home/build/work/jenkins-daily-build/install-linux/arm-none-eabi
--with-gmp=/home/build/work/jenkins-daily-build/build-linux/host-libs/usr
--with-mpfr=/home/build/work/jenkins-daily-build/build-linux/host-libs/usr
--with-mpc=/home/build/work/jenkins-daily-build/build-linux/host-libs/usr
--with-ppl=/home/build/work/jenkins-daily-build/build-linux/host-libs/usr
--with-cloog=/home/build/work/jenkins-daily-build/build-linux/host-libs/usr
--with-libelf=/home/build/work/jenkins-daily-build/build-linux/host-libs/usr
--with-host-libstdcxx='-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm'
--with-pkgversion='GNU Tools for ARM Embedded Processors'
--with-extra-multilibs=armv6-m,armv7-m,armv7e-m,armv7-r
Thread model: single
gcc version 4.6.2 20121016 (release) [ARM/embedded-4_6-branch revision 192487]
(GNU Tools for ARM Embedded Processors)
