https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89424
Bug ID: 89424
Summary: __builtin_vec_ext_v1ti (v, i) results in ICE with
variable i (RS6000)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: kelvin at gcc dot gnu.org
Target Milestone: ---
Target: rs6000
Build: 9.0.1
Created attachment 45781
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45781&action=edit
preprocessed source code for reproducer
The __builtin_vec_ext_v1ti (v, i) function should work with both constant and
variable values of int i.
With current trunk
$GCC_BUILD/GCC/xgcc -B$gcc_build/GCC/ -maltivec -mvsx -O1 -o problem.exe
problem.c
ends with an internal cmopiler error:
during RTL pass: expand
prXXXXX-0.c: In function ‘ei’:
prXXXXX-0.c:25:10: internal compiler error: in rs6000_expand_vector_extract, at
config/rs6000/rs6000.c:6970
25 | return __builtin_vec_ext_v1ti (v, i);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
0x10faeabf rs6000_expand_vector_extract(rtx_def*, rtx_def*, rtx_def*)
/home/kelvin/gcc-root/gcc-trunk2/gcc/config/rs6000/rs6000.c:6970
0x10feeeaf altivec_expand_vec_ext_builtin
/home/kelvin/gcc-root/gcc-trunk2/gcc/config/rs6000/rs6000.c:14736
0x10feeeaf altivec_expand_builtin
/home/kelvin/gcc-root/gcc-trunk2/gcc/config/rs6000/rs6000.c:14969
0x10ff1def rs6000_expand_builtin
/home/kelvin/gcc-root/gcc-trunk2/gcc/config/rs6000/rs6000.c:16530
0x1034702b expand_builtin(tree_node*, rtx_def*, rtx_def*, machine_mode, int)
/home/kelvin/gcc-root/gcc-trunk2/gcc/builtins.c:7226
0x10557feb expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/home/kelvin/gcc-root/gcc-trunk2/gcc/expr.c:11025
0x1056d8f3 store_expr(tree_node*, rtx_def*, int, bool, bool)
/home/kelvin/gcc-root/gcc-trunk2/gcc/expr.c:5669
0x10571463 expand_assignment(tree_node*, tree_node*, bool)
/home/kelvin/gcc-root/gcc-trunk2/gcc/expr.c:5432
0x10571463 expand_assignment(tree_node*, tree_node*, bool)
/home/kelvin/gcc-root/gcc-trunk2/gcc/expr.c:4978
0x1038082b expand_call_stmt
/home/kelvin/gcc-root/gcc-trunk2/gcc/cfgexpand.c:2722
0x1038082b expand_gimple_stmt_1
/home/kelvin/gcc-root/gcc-trunk2/gcc/cfgexpand.c:3691
0x1038082b expand_gimple_stmt
/home/kelvin/gcc-root/gcc-trunk2/gcc/cfgexpand.c:3850
0x1038959f expand_gimple_basic_block
/home/kelvin/gcc-root/gcc-trunk2/gcc/cfgexpand.c:5886
0x1038be27 execute
/home/kelvin/gcc-root/gcc-trunk2/gcc/cfgexpand.c:6509
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.
Makefile:26: recipe for target 'prXXXXX-0.exe' failed
make: *** [prXXXXX-0.exe] Error 1
kelvin@genoa:~/gcc-root/tests$
