https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66076
Bug ID: 66076
Summary: [5/6 Regression] ICE: in vec_safe_grow, at vec.h:618
with -funroll-loops -mno-prefer-avx128 -march=bdver4
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Created attachment 35501
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35501&action=edit
reduced testcase
Compiler output:
$ gcc -O2 -ftree-loop-vectorize -funroll-loops -mno-prefer-avx128 -march=bdver4
testcase.c
testcase.c: In function 'f0a':
testcase.c:7:1: internal compiler error: in vec_safe_grow, at vec.h:618
}
^
0xafa2c0 void vec_safe_grow<rtx_def const*, va_heap>(vec<rtx_def const*,
va_heap, vl_embed>*&, unsigned int)
/mnt/svn/gcc-trunk/gcc/vec.h:618
0xafa2c0
generic_subrtx_iterator<const_rtx_accessor>::add_single_to_queue(generic_subrtx_iterator<const_rtx_accessor>::array_type&,
rtx_def const**, unsigned long, rtx_def const*)
/mnt/svn/gcc-trunk/gcc/rtlanal.c:107
0xafa499
generic_subrtx_iterator<const_rtx_accessor>::add_subrtxes_to_queue(generic_subrtx_iterator<const_rtx_accessor>::array_type&,
rtx_def const**, unsigned long, rtx_def const*)
/mnt/svn/gcc-trunk/gcc/rtlanal.c:174
0xe48b34 generic_subrtx_iterator<const_rtx_accessor>::next()
/mnt/svn/gcc-trunk/gcc/rtl-iter.h:196
0xe48b34 ix86_loop_unroll_adjust
/mnt/svn/gcc-trunk/gcc/config/i386/i386.c:51449
0x9cdcb3 decide_unroll_constant_iterations
/mnt/svn/gcc-trunk/gcc/loop-unroll.c:403
0x9cdcb3 decide_unrolling
/mnt/svn/gcc-trunk/gcc/loop-unroll.c:293
0x9cdcb3 unroll_loops(int)
/mnt/svn/gcc-trunk/gcc/loop-unroll.c:311
0x9baa5f execute
/mnt/svn/gcc-trunk/gcc/loop-init.c:611
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
Tested revisions:
r222902 - ICE
5 r222437 - ICE
4_9 r222436 - OK
