9cfb95f9b9
This will enable optimization for below pattern.
(set (reg:V2DF 87 [ xx ])
(vec_concat:V2DF (vec_select:DF (reg:V4DF 92)
(parallel [
(const_int 2 [0x2])
]))
(vec_select:DF (reg:V4DF 92)
(parallel [
(const_int 3 [0x3])
]))))
gcc/ChangeLog:
* simplify-rtx.c
(simplify_context::simplify_binary_operation_1): Relax
condition of simplifying (vec_concat:M (vec_select op0
index0)(vec_select op1 index1)) to allow different modes
between op0 and M, but have same inner mode.
gcc/testsuite/ChangeLog:
* gcc.target/i386/vect-rebuild.c: Adjust testcases.
* gcc.target/i386/avx512f-vect-rebuild.c: New test.
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