| commit | 7e815261267727b1a7138e7135225c482541c677 | |
| author | Ben Shi <powerman1st@163.com> | |
| Thu, 14 Oct 2021 03:10:33 +0000 (14 03:10 +0000) | ||
| committer | Ben Shi <powerman1st@163.com> | |
| Thu, 14 Oct 2021 04:56:47 +0000 (14 04:56 +0000) | ||
| tree | 93f9b91364c142c4d85dbf35e7e20fd9b2227313 | treesnapshot (tar.gz zip) |
| parent | e567f37dabc242cb02fb8b8b288fd05a0aebfb8f | commitdiff |
[RISCV] Optimize immediate materialisation with BSETI/BCLRI
Opitimize immediate materialisation in the following way if profitable:
1. Use BCLRI for upper 32 bits if the lower 32 bits are negative int32.
2. Use BSETI for upper 32 bits if the lower 32 bits are positive int32.
Reviewed By: craig.topper
Differential Revision: https://reviews.llvm.org/D111508
Opitimize immediate materialisation in the following way if profitable:
1. Use BCLRI for upper 32 bits if the lower 32 bits are negative int32.
2. Use BSETI for upper 32 bits if the lower 32 bits are positive int32.
Reviewed By: craig.topper
Differential Revision: https://reviews.llvm.org/D111508
| llvm/lib/Target/RISCV/MCTargetDesc/RISCVMatInt.cpp | diffblobblamehistory | |
| llvm/test/CodeGen/RISCV/imm.ll | diffblobblamehistory | |
| llvm/test/MC/RISCV/rv64zbs-aliases-valid.s | diffblobblamehistory |