3fce111535
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> |
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