https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79887
Bug ID: 79887
Summary: [7 Regression] ICE in set_uid_loop_bbs, at
tree-vectorizer.c:482
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: rguenth at gcc dot gnu.org
Target Milestone: ---
Created attachment 40886
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40886&action=edit
test-case
Starting from r242759 we ICE on of LLVM's test-case:
$ g++ copy.pass.cpp --param vect-epilogues-nomask=1
-I/home/marxin/BIG/Programming/llvm-project/libcxx/test/support/ -O3 -mavx512f
copy.pass.cpp: In function ‘C make(int, int) [with C = std::deque<int,
min_allocator<int> >]’:
copy.pass.cpp:26:1: internal compiler error: in set_uid_loop_bbs, at
tree-vectorizer.c:482
make(int size, int start = 0 )
^~~~
0x1071196 set_uid_loop_bbs
../../gcc/tree-vectorizer.c:481
0x1071196 vectorize_loops()
../../gcc/tree-vectorizer.c:681
with -mtune=generic -march=x86-64.
