ICE reload1.c:1058 using 4.8 with mthumb fomit-frame-pointer

[abx]

Toolchain:
arm-none-eabi-gcc (GNU Tools for ARM Embedded Processors) 4.8.3 20131129 (release) [ARM/embedded-4_8-branch revision 205641]

Host:
ubuntu 13.10 (but also occurs on windows 8.1 using windows binaries)

Test Case 1 (attachment: png.c):
arm-none-eabi-gcc ~/Dropbox/ICE/png.c -c -fomit-frame-pointer -mthumb -fPIC
/home/ab/Dropbox/ICE/png.c: In function 'png_do_read_swap_alpha':
/home/ab/Dropbox/ICE/png.c:104:1: internal compiler error: in reload, at reload1.c:1058
 }
 ^

Test Case 2 (attachement: etc.cpp):
/arm-none-eabi-g++ etc.cpp -c -fomit-frame-pointer -mthumb -fPIC
etc.cpp: In function 'int {anonymous}::compressBlockWithTable2x4({anonymous}::uint8*, int, int, int, int, {anonymous}::uint8*, int, unsigned int*, unsigned int*)':
etc.cpp:78:1: internal compiler error: in reload, at reload1.c:1058
 }
 ^

The two test cases provided are snippets from larger libraries. The first being libpng and the second an internal graphics library. The issue with libpng has been reported by people using the android ndk r8c and is said to have been resolved in r8d (according to their changelog).

Building thumb 2 (-mthumb -march=armv7-a) is fine. ICE only occurs with combination of -mthumb and -fomit-frame-pointer, sometimes with -fPIC. Test Case 1 only seems to occur with 4.8, whereas Test Case 2 also occurs with 4.7

Thanks.

[Joey Ye (jinyun-ye)]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60169