FYI, if we switch radeonsi to NIR, we are going to disable fma completely, exact or not.
Marek On Wed, Oct 4, 2017 at 10:04 PM, Dave Airlie <airl...@gmail.com> wrote: > From: Dave Airlie <airl...@redhat.com> > > As pointed out by Connor we still need to use fma if nir wants > exact (precise) behaviour. > > Signed-off-by: Dave Airlie <airl...@redhat.com> > --- > src/amd/common/ac_nir_to_llvm.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c > index 11ba487..38a2bbe 100644 > --- a/src/amd/common/ac_nir_to_llvm.c > +++ b/src/amd/common/ac_nir_to_llvm.c > @@ -1707,7 +1707,7 @@ static void visit_alu(struct ac_nir_context *ctx, const > nir_alu_instr *instr) > result); > break; > case nir_op_ffma: > - result = emit_intrin_3f_param(&ctx->ac, "llvm.fmuladd", > + result = emit_intrin_3f_param(&ctx->ac, instr->exact ? > "llvm.fma" : "llvm.fmuladd", > ac_to_float_type(&ctx->ac, > def_type), src[0], src[1], src[2]); > break; > case nir_op_ibitfield_extract: > -- > 2.9.5 > > _______________________________________________ > mesa-dev mailing list > mesa-dev@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/mesa-dev _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
