| Summary: | [11 Regression] ICE in vect_slp_analyze_node_operations, at tree-vect-slp.c:3764 with -O3 -march=skylake-avx512 since r11-615-gdc0c0196340f7ac5 | ||
|---|---|---|---|
| Product: | gcc | Reporter: | Vsevolod Livinskii <vsevolod.livinskiy> |
| Component: | tree-optimization | Assignee: | Richard Biener <rguenth> |
| Status: | RESOLVED FIXED | ||
| Severity: | normal | CC: | babokin, marxin, regehr, rguenth, vsevolod.livinskiy |
| Priority: | P1 | Keywords: | ice-on-valid-code |
| Version: | 11.0 | ||
| Target Milestone: | 11.0 | ||
| Host: | Target: | ||
| Build: | Known to work: | 10.2.0 | |
| Known to fail: | 11.0 | Last reconfirmed: | 2020-12-16 00:00:00 |
| Bug Depends on: | |||
| Bug Blocks: | 103035 | ||
Confirmed, started with r11-615-gdc0c0196340f7ac5. Mine. The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>: https://gcc.gnu.org/g:9e79d76a16c56df0f838b9aede69c0a158203f56 commit r11-6444-g9e79d76a16c56df0f838b9aede69c0a158203f56 Author: Richard Biener <rguenther@suse.de> Date: Mon Jan 4 13:25:35 2021 +0100 tree-optimization/98308 - set vector type for mask of masked load This makes sure to set the vector type on an invariant mask argument for a masked load and SLP. 2021-01-04 Richard Biener <rguenther@suse.de> PR tree-optimization/98308 * tree-vect-stmts.c (vectorizable_load): Set invariant mask SLP vectype. * gcc.dg/vect/pr98308.c: New testcase. Fixed. |
Reproducer: extern unsigned long long int arr_86[]; extern unsigned long long int arr_87[][15]; void test(bool a, unsigned short c[][15], unsigned char d[]) { for (short h = 0; h < 10; h++) for (char i = 0; i < 15; i += 2) { arr_86[0] = d[0]; arr_87[h][0] = a ? c[h][i] : 0; } } Error: >$ g++ -c -O3 -march=skylake-avx512 func.cpp during GIMPLE pass: vect func.cpp: In function ‘void test(bool, short unsigned int (*)[15], unsigned char*)’: func.cpp:4:6: internal compiler error: in vect_slp_analyze_node_operations, at tree-vect-slp.c:3764 4 | void test(bool a, unsigned short c[][15], unsigned char d[]) { | ^~~~ 0x886a4d vect_slp_analyze_node_operations gcc_src/gcc/tree-vect-slp.c:3764 0x1425a73 vect_slp_analyze_node_operations gcc_src/gcc/tree-vect-slp.c:3719 0x1425a73 vect_slp_analyze_node_operations gcc_src/gcc/tree-vect-slp.c:3719 0x1425a73 vect_slp_analyze_node_operations gcc_src/gcc/tree-vect-slp.c:3719 0x1427101 vect_slp_analyze_operations(vec_info*) gcc_src/gcc/tree-vect-slp.c:3914 0x1404939 vect_analyze_loop_2 gcc_src/gcc/tree-vect-loop.c:2391 0x1404939 vect_analyze_loop(loop*, vec_info_shared*) gcc_src/gcc/tree-vect-loop.c:2929 0x14311f4 try_vectorize_loop_1 gcc_src/gcc/tree-vectorizer.c:1008 0x1431c59 vectorize_loops() gcc_src/gcc/tree-vectorizer.c:1242 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions. gcc version 11.0.0 20201214 (22a90217305ee8c116bbc12c8d07abe7ca0ff61d)