diff options
| author | Meng Zhuo <mzh@golangcn.org> | 2023-06-27 23:22:04 +0800 |
|---|---|---|
| committer | Keith Randall <khr@golang.org> | 2023-07-05 22:05:44 +0000 |
| commit | 3fce1115359c4ab7d67fbf4efef1341e52b354b7 (patch) | |
| tree | 6952092aebcb61ea958270683a299e9ebc48d73d /src/database/sql | |
| parent | c8dad424bf01df69af729845acc151a66b87d594 (diff) | |
| download | go-3fce1115359c4ab7d67fbf4efef1341e52b354b7.tar.xz | |
cmd/compile: fix FMA negative commutativity of riscv64
According to RISCV manual 11.6:
FMADD x,y,z computes x*y+z and
FNMADD x,y,z => -x*y-z
FMSUB x,y,z => x*y-z
FNMSUB x,y,z => -x*y+z respectively
However our implement of SSA convert FMADD -x,y,z to FNMADD x,y,z which
is wrong and should be convert to FNMSUB according to manual.
Change-Id: Ib297bc83824e121fd7dda171ed56ea9694a4e575
Reviewed-on: https://go-review.googlesource.com/c/go/+/506575
Run-TryBot: M Zhuo <mzh@golangcn.org>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Joedian Reid <joedian@golang.org>
Reviewed-by: Michael Munday <mike.munday@lowrisc.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Diffstat (limited to 'src/database/sql')
0 files changed, 0 insertions, 0 deletions