llvm-project

Commit Graph

Author	SHA1	Message	Date
Alex Bradbury	bd1c56648f	[RISCV] Regenerate test/CodeGen/RISCV/legalize-fneg.ll after rL356068 rL356068 caused some minor re-orderings. Regenerate legalize-fneg.ll to reflect this, and remove the NOLIB check lines (they're redundant given that the RV32I and RV64I check lines generated by update_llc_test_checks.py already demonstrate there is no libcall). llvm-svn: 356074	2019-03-13 18:25:23 +00:00
Ana Pazos	9a3dc3e60b	[LegalizeTypes] Expand FNEG to bitwise op for IEEE FP types Summary: Except for custom floating point types x86_fp80 and ppc_fp128, expand Y = FNEG(X) to Y = X ^ sign mask to avoid library call. Using bitwise operation can improve code size and performance. Reviewers: efriedma Reviewed By: efriedma Subscribers: efriedma, kpn, arsenm, eli.friedman, javed.absar, rbar, johnrusso, simoncook, sabuasal, niosHD, zzheng, edward-jones, rogfer01, MartinMosbeck, brucehoult, the_o, PkmX, jocewei, asb, llvm-commits Differential Revision: https://reviews.llvm.org/D57875 llvm-svn: 353757	2019-02-11 22:10:08 +00:00

Author

SHA1

Message

Date

Alex Bradbury

bd1c56648f

[RISCV] Regenerate test/CodeGen/RISCV/legalize-fneg.ll after rL356068

rL356068 caused some minor re-orderings. Regenerate legalize-fneg.ll to
reflect this, and remove the NOLIB check lines (they're redundant given that
the RV32I and RV64I check lines generated by update_llc_test_checks.py already
demonstrate there is no libcall).

llvm-svn: 356074

2019-03-13 18:25:23 +00:00

Ana Pazos

9a3dc3e60b

[LegalizeTypes] Expand FNEG to bitwise op for IEEE FP types

Summary:
Except for custom floating point types x86_fp80 and ppc_fp128,
expand Y = FNEG(X) to Y = X ^ sign mask to avoid library call.
 Using bitwise operation can improve code size and performance.

Reviewers: efriedma

Reviewed By: efriedma

Subscribers: efriedma, kpn, arsenm, eli.friedman, javed.absar, rbar, johnrusso, simoncook, sabuasal, niosHD, zzheng, edward-jones, rogfer01, MartinMosbeck, brucehoult, the_o, PkmX, jocewei, asb, llvm-commits

Differential Revision: https://reviews.llvm.org/D57875

llvm-svn: 353757

2019-02-11 22:10:08 +00:00

2 Commits