[RISCV] Fix support of vlen = 64.
authorjacquesguan <Jianjian.Guan@streamcomputing.com>
Wed, 26 Jan 2022 07:48:51 +0000 (15:48 +0800)
committerjacquesguan <Jianjian.Guan@streamcomputing.com>
Wed, 26 Jan 2022 08:31:21 +0000 (16:31 +0800)
commit267711e38bc7522abd2488a76e998a3a494d51d6
treea81ffe92460a5f3d9cdddcc6ad9fe57675235e8d
parent18778b8863522e3043a0134eb31cd60127bd962b
[RISCV] Fix support of vlen = 64.

In the Zve* extensions, the vlen could be 64. This patch change the vlen constraint of low bound to 64.

Differential Revision: https://reviews.llvm.org/D118217
llvm/lib/Target/RISCV/RISCVSubtarget.cpp