http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51244
Bug #: 51244
Summary: SH Target: Inefficient conditional branch
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: target
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Target: sh*-*-*
Created attachment 25869
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25869
Examples
It seems that the condition inversion sometimes gets confused, resulting in
unnecessary code bloat. The attached examples were compiled with -Os but the
same problem happens also at -O2 and -O3.
sh-elf-gcc -v
Using built-in specs.
COLLECT_GCC=sh-elf-gcc
COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/sh-elf/4.7.0/lto-wrapper
Target: sh-elf
Configured with: ../gcc-trunk/configure --target=sh-elf --prefix=/usr/local
--enable-languages=c,c++ --enable-multilib --disable-libssp --disable-nls
--disable-werror --enable-lto --with-newlib --with-gnu-as --with-gnu-ld
--with-system-zlib
Thread model: single
gcc version 4.7.0 20111119 (experimental) (GCC)
