Launchpad has imported 8 comments from the remote bug at https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60034.
If you reply to an imported comment from within Launchpad, your comment will be sent to the remote bug automatically. Read more about Launchpad's inter-bugtracker facilities at https://help.launchpad.net/InterBugTracking. ------------------------------------------------------------------------ On 2014-02-02T22:10:19+00:00 Kuganv wrote: Created attachment 32017 pre processed source This issue is originally reported in https://bugs.launchpad.net/gcc- linaro/+bug/1270789 The attached pre-processed source fails with: # aarch64-linux-gnu-gcc -std=gnu99 -fgnu89-inline -O -Wall -Winline -Wwrite-strings -fmerge-all-constants -frounding-math -g -Wstrict-prototypes malloc.i malloc.c: In function ‘__libc_mallopt’: malloc.c:4761:16: error: invalid 'asm': invalid expression as operand Splitting this inline asm out into a smaller testcase does not seem to reproduce the issue. It's possible this is a bug in the source file, but it's not clear from gcc's output what the problem is. Seems to be an issue with alignment calculation in aarch64_classify_address. for rtl of the form (lo_sum:DI (reg/f:DI 132) (symbol_ref:DI ("*.LANCHOR4") [flags 0x182])) we are currently calculating align of 8bits and due to this the following statement returns false. This causes output_addr_const (in gcc/final.c) to fail. return ((INTVAL (offs) & (ref_size - 1)) == 0 && ((align / BITS_PER_UNIT) & (ref_size - 1)) == 0); AFIK, align of 8bits is not correct here. GCC version and config: arm-none-linux-gnueabi-gcc -v Using built-in specs. COLLECT_GCC=/home/kugan/work/builds/gcc-fsf-trunk/tools/bin/arm-none-linux-gnueabi-gcc COLLECT_LTO_WRAPPER=/home/kugan/work/builds/gcc-fsf-trunk/tools/libexec/gcc/arm-none-linux-gnueabi/4.9.0/lto-wrapper Target: arm-none-linux-gnueabi Configured with: /home/kugan/work/sources/gcc-fsf/trunk/configure --target=arm-none-linux-gnueabi --prefix=/home/kugan/work/builds/gcc-fsf-trunk/tools --with-sysroot=/home/kugan/work/builds/gcc-fsf-trunk/sysroot-arm-none-linux-gnueabi --disable-libssp --disable-libgomp --disable-libmudflap --enable-languages=c,c++ --with-arch=armv7-a --with-fpu=vfpv3-d16 --with-float=softfp --with-thumb Thread model: posix gcc version 4.9.0 20130922 (experimental) (GCC) Reply at: https://bugs.launchpad.net/gcc-linaro/+bug/1270789/comments/3 ------------------------------------------------------------------------ On 2014-02-02T22:11:33+00:00 Kuganv wrote: Created attachment 32018 Proposed patch Reply at: https://bugs.launchpad.net/gcc-linaro/+bug/1270789/comments/4 ------------------------------------------------------------------------ On 2014-02-02T22:24:01+00:00 Kuganv wrote: I am sorry that I entered wrong gcc -v (cut and paste error). It is an aarch64 issue and the correct gcc -v is below: aarch64-none-linux-gnu-gcc -v Using built-in specs. COLLECT_GCC=/home/kugan/work/builds/gcc-fsf-trunk/tools/bin/aarch64-none-linux-gnu-gcc COLLECT_LTO_WRAPPER=/home/kugan/work/builds/gcc-fsf-trunk/tools/libexec/gcc/aarch64-none-linux-gnu/4.9.0/lto-wrapper Target: aarch64-none-linux-gnu Configured with: /home/kugan/work/sources/gcc-fsf/trunk/configure --target=aarch64-none-linux-gnu --prefix=/home/kugan/work/builds/gcc-fsf-trunk/tools --without-headers --with-newlib --disable-shared --disable-threads --disable-libssp --disable-libgomp --disable-libmudflap --disable-libatomic --without-libquadmath --disable-libquadmath --enable-languages=c Thread model: single gcc version 4.9.0 20130922 (experimental) (GCC) Reply at: https://bugs.launchpad.net/gcc-linaro/+bug/1270789/comments/5 ------------------------------------------------------------------------ On 2014-02-02T23:38:04+00:00 Pinskia wrote: Here is a reduced testcase: static unsigned long global_max_fast; int __libc_mallopt (int param_number, int value) { __asm__ __volatile__ ("# %[_SDT_A2]" :: [_SDT_A2] "nor" ((global_max_fast))); global_max_fast = 1; } Reply at: https://bugs.launchpad.net/gcc-linaro/+bug/1270789/comments/6 ------------------------------------------------------------------------ On 2014-02-07T10:46:16+00:00 Ramana-gcc wrote: (In reply to Kugan from comment #1) > Created attachment 32018 [details] > Proposed patch Please submit patches on gcc-patc...@gcc.gnu.org Reply at: https://bugs.launchpad.net/gcc-linaro/+bug/1270789/comments/7 ------------------------------------------------------------------------ On 2014-02-16T22:27:34+00:00 Kuganv wrote: There is a rgression with this patch in qemu aarch64-none-linux-gnu for pr38151.c. pr38151.c:(.text+0x10c): relocation truncated to fit: R_AARCH64_LDST64_ABS_LO12_NC against `.rodata' collect2: error: ld returned 1 exit status asm diff is as shown below. < add x0, x0, :lo12:.LANCHOR0 < ldr x0, [x0] --- > ldr x0, [x0,#:lo12:.LANCHOR0] If I however increase the alignment of .rodata where .LANCHOR0 is defined, this passes. Is alignment of BITS_PER_UNIT valid for SYMBOL_REF? If I change it as I am doing this attached patch, is there anything else I need to do. Any tips? Reply at: https://bugs.launchpad.net/gcc-linaro/+bug/1270789/comments/8 ------------------------------------------------------------------------ On 2014-03-30T22:42:31+00:00 Kugan wrote: Author: kugan Date: Sun Mar 30 22:41:59 2014 New Revision: 208949 URL: http://gcc.gnu.org/viewcvs?rev=208949&root=gcc&view=rev Log: PR target/60034 * aarch64/aarch64.c (aarch64_classify_address): Fix alignment for section anchor. PR target/60034 * gcc.target/aarch64/pr60034.c: New file. Added: trunk/gcc/testsuite/gcc.target/aarch64/pr60034.c Modified: trunk/gcc/ChangeLog trunk/gcc/config/aarch64/aarch64.c trunk/gcc/testsuite/ChangeLog Reply at: https://bugs.launchpad.net/gcc-linaro/+bug/1270789/comments/9 ------------------------------------------------------------------------ On 2014-04-14T13:52:13+00:00 Ramana-gcc wrote: Fixed on trunk for 4.9.0. Reply at: https://bugs.launchpad.net/gcc-linaro/+bug/1270789/comments/11 ** Changed in: gcc Status: Unknown => Fix Released ** Changed in: gcc Importance: Unknown => Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1270789 Title: gcc 4.8: "invalid expression as operand" in aarch64 inline asm To manage notifications about this bug go to: https://bugs.launchpad.net/gcc/+bug/1270789/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
