gnu /
gcc /
1a4eb0479ce0827b55a6190ddf13ade330d619e6 LoongArch: Fix bug123521.
In the vector initialization process, optimization can be performed
if it can be determined that all elements are the same, or if the
upper or lower halves are identical. However, during this
optimization, when the identical element is an immediate value
larger than 10 bits, an internal compiler error (ICE) occurs.
The reason is that in such cases, the function
`simplify_gen_subreg (imode, reg_tmp, GET_MODE (reg_tmp), 0)` is
called, where `imode` is `E_DImode`. The mode of `reg_tmp` in
`GET_MODE (reg_tmp)` is taken from the immediate value's mode,
which is `E_VOIDmode`. This results in a move from `E_VOIDmode`
to `E_DImode`, an operation not supported by LoongArch.
PR target/123521
gcc/ChangeLog:
* config/loongarch/loongarch.cc
(loongarch_expand_vector_init_same): Fixed a bug in the
vector initialization section..
gcc/testsuite/ChangeLog:
* gcc.target/loongarch/vector/lasx/pr123521.c: New test.
Suggested-by: Xi Ruoyao <xry111@xry111.site>
2 files changed
