https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106794
Bug ID: 106794
Summary: ice in vect_transform_slp_perm_load_1
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
Created attachment 53525
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53525&action=edit
gzipped C++ source code
For the attached C++ code, recent gcc does this:
$ /home/dcb/gcc/results/bin/gcc -c -w -O3 -ansi -march=bdver2 -ffast-math
bug839.cc
during GIMPLE pass: vect
spheremesh.cpp: In member function ‘void SphereMesh::generateNormals()’:
spheremesh.cpp:123:6: internal compiler error: in operator[], at vec.h:889
0x137b3fd vect_transform_slp_perm_load_1(vec_info*, _slp_tree*, vec<unsigned
int, va_heap, vl_ptr>&, vec<tree_node*
, va_heap, vl_ptr> const&, gimple_stmt_iterator*, poly_int<1u, unsigned long>,
bool, bool, unsigned int*, unsigned
int*, bool)
../../trunk.git/gcc/tree-vect-slp.cc:0
0x137a5c0 vect_optimize_slp_pass::internal_node_cost(_slp_tree*, int, unsigned
int)
../../trunk.git/gcc/tree-vect-slp.cc:4490
0x137cf1b vect_optimize_slp_pass::forward_pass()
../../trunk.git/gcc/tree-vect-slp.cc:4951
0x137fe93 vect_optimize_slp_pass::run()
../../trunk.git/gcc/tree-vect-slp.cc:5498
A reduction is currently running. I will try to identify a git hash range.
