Hi,

Following compilation fails with -O3 -mfpu=neon,(but successful on -O2, -mfpu=neon) for Cortex-A5. Could you please help me out to resolve this error ?

ubuntu@tegra:~/$ gcc-4.5 -v -c -o utility.o -DLINUX -DUNIX -DHAS_LONGLONG -DLITTLE_ENDIAN_ARCH -DSPEC_CPU2000 -O3 -mcpu=cortex-a5 -marm -mfpu=neon -mfloat-abi=softfp utility.c

Using built-in specs. COLLECT_GCC=gcc-4.5 COLLECT_LTO_WRAPPER=/usr/lib/gcc/arm-linux-gnueabi/4.5.1/lto-wrapper Target: arm-linux-gnueabi Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.5.1-7ubuntu2' --with-bugurl=file:///usr/share/doc/gcc-4.5/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.5 --enable-shared --enable-multiarch --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.5 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-plugin --enable-objc-gc --disable-sjlj-exceptions --with-arch=armv7-a --with-float=softfp --with-fpu=vfpv3-d16 --with-mode=thumb --disable-werror --enable-checking=release --build=arm-linux-gnueabi --host=arm-linux-gnueabi --target=arm-linux-gnueabi Thread model: posix gcc version 4.5.1 (Ubuntu/Linaro 4.5.1-7ubuntu2) COLLECT_GCC_OPTIONS='-v' '-c' '-o' 'utility.o' '-DLINUX' '-DUNIX' '-DHAS_LONGLONG' '-DLITTLE_ENDIAN_ARCH' '-DSPEC_CPU2000' '-O3' '-mcpu=cortex-a5' '-marm' '-mfpu=neon' '-mfloat-abi=softfp' /usr/lib/gcc/arm-linux-gnueabi/4.5.1/cc1 -quiet -v -DLINUX -DUNIX -DHAS_LONGLONG -DLITTLE_ENDIAN_ARCH -DSPEC_CPU2000 utility.c -D_FORTIFY_SOURCE=2 -quiet -dumpbase utility.c -mcpu=cortex-a5 -marm -mfpu=neon -mfloat-abi=softfp -auxbase-strip utility.o -O3 -version -fstack-protector -o /tmp/ccaZnpsw.s GNU C (Ubuntu/Linaro 4.5.1-7ubuntu2) version 4.5.1 (arm-linux-gnueabi) compiled by GNU C version 4.5.1, GMP version 4.3.2, MPFR version 3.0.0-p3, MPC version 0.8.2 GGC heuristics: --param ggc-min-expand=64 --param ggc-min-heapsize=64482 ignoring nonexistent directory "/usr/local/include/arm-linux-gnueabi" ignoring nonexistent directory "/usr/lib/gcc/arm-linux-gnueabi/4.5.1/../../../../arm-linux-gnueabi/include" ignoring nonexistent directory "/usr/include/arm-linux-gnueabi" #include "..." search starts here: #include <...> search starts here: /usr/local/include /usr/lib/gcc/arm-linux-gnueabi/4.5.1/include /usr/lib/gcc/arm-linux-gnueabi/4.5.1/include-fixed /usr/include End of search list. GNU C (Ubuntu/Linaro 4.5.1-7ubuntu2) version 4.5.1 (arm-linux-gnueabi) compiled by GNU C version 4.5.1, GMP version 4.3.2, MPFR version 3.0.0-p3, MPC version 0.8.2 GGC heuristics: --param ggc-min-expand=64 --param ggc-min-heapsize=64482 Compiler executable checksum: 52c4962735600b49ca41dc70631edd04 COLLECT_GCC_OPTIONS='-v' '-c' '-o' 'utility.o' '-DLINUX' '-DUNIX' '-DHAS_LONGLONG' '-DLITTLE_ENDIAN_ARCH' '-DSPEC_CPU2000' '-O3' '-mcpu=cortex-a5' '-marm' '-mfpu=neon' '-mfloat-abi=softfp' as -mcpu=cortex-a5 -mfloat-abi=softfp -mfpu=neon -meabi=5 -o utility.o /tmp/ccaZnpsw.s /tmp/ccaZnpsw.s: Assembler messages: /tmp/ccaZnpsw.s:460: Error: VFP/Neon double precision register expected -- `vmovl.s16 q5,s20' /tmp/ccaZnpsw.s:531: Error: VFP/Neon double precision register expected -- `vmovl.s16 q9,s14' /tmp/ccaZnpsw.s:537: Error: VFP/Neon double precision register expected -- `vmovl.s16 q7,s28' /tmp/ccaZnpsw.s:542: Error: VFP/Neon double precision register expected -- `vmovl.s16 q13,s12' /tmp/ccaZnpsw.s:543: Error: VFP/Neon double precision register expected -- `vmovl.s16 q14,s10' /tmp/ccaZnpsw.s:544: Error: VFP/Neon double precision register expected -- `vmovl.s16 q3,s8' /tmp/ccaZnpsw.s:546: Error: VFP/Neon double precision register expected -- `vmovl.s16 q2,s6' /tmp/ccaZnpsw.s:549: Error: VFP/Neon double precision register expected -- `vmovl.s16 q1,s4' /tmp/ccaZnpsw.s:550: Error: VFP/Neon double precision register expected -- `vmovl.s16 q0,s0' /tmp/ccaZnpsw.s:551: Error: VFP/Neon double precision register expected -- `vmovl.s16 q4,s16'

Regards, Shankar

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