* [RFC PATCH] target/ppc: Remove xscmpnedp instruction
@ 2022-01-06 11:23 Víctor Colombo
2022-01-06 12:21 ` Cédric Le Goater
` (2 more replies)
0 siblings, 3 replies; 8+ messages in thread
From: Víctor Colombo @ 2022-01-06 11:23 UTC (permalink / raw)
To: qemu-devel, qemu-ppc
Cc: danielhb413, groug, victor.colombo, clg, matheus.ferst, david
xscmpnedp was added in ISA v3.0 but removed in v3.0B. This patch
removes this instruction as it was not in the final version of v3.0.
RFC to know if you think this is the correct approach.
Signed-off-by: Víctor Colombo <victor.colombo@eldorado.org.br>
---
target/ppc/fpu_helper.c | 1 -
target/ppc/helper.h | 1 -
target/ppc/translate/vsx-impl.c.inc | 1 -
target/ppc/translate/vsx-ops.c.inc | 1 -
4 files changed, 4 deletions(-)
diff --git a/target/ppc/fpu_helper.c b/target/ppc/fpu_helper.c
index e5c29b53b8..f030858cf9 100644
--- a/target/ppc/fpu_helper.c
+++ b/target/ppc/fpu_helper.c
@@ -2270,7 +2270,6 @@ void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, \
VSX_SCALAR_CMP_DP(xscmpeqdp, eq, 1, 0)
VSX_SCALAR_CMP_DP(xscmpgedp, le, 1, 1)
VSX_SCALAR_CMP_DP(xscmpgtdp, lt, 1, 1)
-VSX_SCALAR_CMP_DP(xscmpnedp, eq, 0, 0)
void helper_xscmpexpdp(CPUPPCState *env, uint32_t opcode,
ppc_vsr_t *xa, ppc_vsr_t *xb)
diff --git a/target/ppc/helper.h b/target/ppc/helper.h
index f9c72dcd50..8f02cabaf5 100644
--- a/target/ppc/helper.h
+++ b/target/ppc/helper.h
@@ -400,7 +400,6 @@ DEF_HELPER_5(xsnmsubdp, void, env, vsr, vsr, vsr, vsr)
DEF_HELPER_4(xscmpeqdp, void, env, vsr, vsr, vsr)
DEF_HELPER_4(xscmpgtdp, void, env, vsr, vsr, vsr)
DEF_HELPER_4(xscmpgedp, void, env, vsr, vsr, vsr)
-DEF_HELPER_4(xscmpnedp, void, env, vsr, vsr, vsr)
DEF_HELPER_4(xscmpexpdp, void, env, i32, vsr, vsr)
DEF_HELPER_4(xscmpexpqp, void, env, i32, vsr, vsr)
DEF_HELPER_4(xscmpodp, void, env, i32, vsr, vsr)
diff --git a/target/ppc/translate/vsx-impl.c.inc b/target/ppc/translate/vsx-impl.c.inc
index c08185e857..fbef496257 100644
--- a/target/ppc/translate/vsx-impl.c.inc
+++ b/target/ppc/translate/vsx-impl.c.inc
@@ -1092,7 +1092,6 @@ GEN_VSX_HELPER_X1(xstsqrtdp, 0x14, 0x06, 0, PPC2_VSX)
GEN_VSX_HELPER_X3(xscmpeqdp, 0x0C, 0x00, 0, PPC2_ISA300)
GEN_VSX_HELPER_X3(xscmpgtdp, 0x0C, 0x01, 0, PPC2_ISA300)
GEN_VSX_HELPER_X3(xscmpgedp, 0x0C, 0x02, 0, PPC2_ISA300)
-GEN_VSX_HELPER_X3(xscmpnedp, 0x0C, 0x03, 0, PPC2_ISA300)
GEN_VSX_HELPER_X2_AB(xscmpexpdp, 0x0C, 0x07, 0, PPC2_ISA300)
GEN_VSX_HELPER_R2_AB(xscmpexpqp, 0x04, 0x05, 0, PPC2_ISA300)
GEN_VSX_HELPER_X2_AB(xscmpodp, 0x0C, 0x05, 0, PPC2_VSX)
diff --git a/target/ppc/translate/vsx-ops.c.inc b/target/ppc/translate/vsx-ops.c.inc
index c974324c4c..67fa7b2e41 100644
--- a/target/ppc/translate/vsx-ops.c.inc
+++ b/target/ppc/translate/vsx-ops.c.inc
@@ -197,7 +197,6 @@ GEN_XX3FORM_NAME(xsnmsubdp, "xsnmsubmdp", 0x04, 0x17, PPC2_VSX),
GEN_XX3FORM(xscmpeqdp, 0x0C, 0x00, PPC2_ISA300),
GEN_XX3FORM(xscmpgtdp, 0x0C, 0x01, PPC2_ISA300),
GEN_XX3FORM(xscmpgedp, 0x0C, 0x02, PPC2_ISA300),
-GEN_XX3FORM(xscmpnedp, 0x0C, 0x03, PPC2_ISA300),
GEN_XX3FORM(xscmpexpdp, 0x0C, 0x07, PPC2_ISA300),
GEN_VSX_XFORM_300(xscmpexpqp, 0x04, 0x05, 0x00600001),
GEN_XX2IFORM(xscmpodp, 0x0C, 0x05, PPC2_VSX),
--
2.25.1
^ permalink raw reply related [flat|nested] 8+ messages in thread* Re: [RFC PATCH] target/ppc: Remove xscmpnedp instruction
2022-01-06 11:23 [RFC PATCH] target/ppc: Remove xscmpnedp instruction Víctor Colombo
@ 2022-01-06 12:21 ` Cédric Le Goater
2022-01-06 13:02 ` Greg Kurz
2022-01-06 18:51 ` Richard Henderson
2022-01-10 15:02 ` Cédric Le Goater
2 siblings, 1 reply; 8+ messages in thread
From: Cédric Le Goater @ 2022-01-06 12:21 UTC (permalink / raw)
To: Víctor Colombo, qemu-devel, qemu-ppc
Cc: danielhb413, matheus.ferst, groug, david
On 1/6/22 12:23, Víctor Colombo wrote:
> xscmpnedp was added in ISA v3.0 but removed in v3.0B. This patch
> removes this instruction as it was not in the final version of v3.0.
>
> RFC to know if you think this is the correct approach.
Usually we deprecate a feature for a minimum of two releases before
removing it. It might be overkill for this case since the P9 processor
implementation is based on v3.0B.
I would simply remove the instruction since it never existed on any
supported HW. I will wait for some more feedback.
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Thanks,
C.
> Signed-off-by: Víctor Colombo <victor.colombo@eldorado.org.br>
> ---
> target/ppc/fpu_helper.c | 1 -
> target/ppc/helper.h | 1 -
> target/ppc/translate/vsx-impl.c.inc | 1 -
> target/ppc/translate/vsx-ops.c.inc | 1 -
> 4 files changed, 4 deletions(-)
>
> diff --git a/target/ppc/fpu_helper.c b/target/ppc/fpu_helper.c
> index e5c29b53b8..f030858cf9 100644
> --- a/target/ppc/fpu_helper.c
> +++ b/target/ppc/fpu_helper.c
> @@ -2270,7 +2270,6 @@ void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, \
> VSX_SCALAR_CMP_DP(xscmpeqdp, eq, 1, 0)
> VSX_SCALAR_CMP_DP(xscmpgedp, le, 1, 1)
> VSX_SCALAR_CMP_DP(xscmpgtdp, lt, 1, 1)
> -VSX_SCALAR_CMP_DP(xscmpnedp, eq, 0, 0)
>
> void helper_xscmpexpdp(CPUPPCState *env, uint32_t opcode,
> ppc_vsr_t *xa, ppc_vsr_t *xb)
> diff --git a/target/ppc/helper.h b/target/ppc/helper.h
> index f9c72dcd50..8f02cabaf5 100644
> --- a/target/ppc/helper.h
> +++ b/target/ppc/helper.h
> @@ -400,7 +400,6 @@ DEF_HELPER_5(xsnmsubdp, void, env, vsr, vsr, vsr, vsr)
> DEF_HELPER_4(xscmpeqdp, void, env, vsr, vsr, vsr)
> DEF_HELPER_4(xscmpgtdp, void, env, vsr, vsr, vsr)
> DEF_HELPER_4(xscmpgedp, void, env, vsr, vsr, vsr)
> -DEF_HELPER_4(xscmpnedp, void, env, vsr, vsr, vsr)
> DEF_HELPER_4(xscmpexpdp, void, env, i32, vsr, vsr)
> DEF_HELPER_4(xscmpexpqp, void, env, i32, vsr, vsr)
> DEF_HELPER_4(xscmpodp, void, env, i32, vsr, vsr)
> diff --git a/target/ppc/translate/vsx-impl.c.inc b/target/ppc/translate/vsx-impl.c.inc
> index c08185e857..fbef496257 100644
> --- a/target/ppc/translate/vsx-impl.c.inc
> +++ b/target/ppc/translate/vsx-impl.c.inc
> @@ -1092,7 +1092,6 @@ GEN_VSX_HELPER_X1(xstsqrtdp, 0x14, 0x06, 0, PPC2_VSX)
> GEN_VSX_HELPER_X3(xscmpeqdp, 0x0C, 0x00, 0, PPC2_ISA300)
> GEN_VSX_HELPER_X3(xscmpgtdp, 0x0C, 0x01, 0, PPC2_ISA300)
> GEN_VSX_HELPER_X3(xscmpgedp, 0x0C, 0x02, 0, PPC2_ISA300)
> -GEN_VSX_HELPER_X3(xscmpnedp, 0x0C, 0x03, 0, PPC2_ISA300)
> GEN_VSX_HELPER_X2_AB(xscmpexpdp, 0x0C, 0x07, 0, PPC2_ISA300)
> GEN_VSX_HELPER_R2_AB(xscmpexpqp, 0x04, 0x05, 0, PPC2_ISA300)
> GEN_VSX_HELPER_X2_AB(xscmpodp, 0x0C, 0x05, 0, PPC2_VSX)
> diff --git a/target/ppc/translate/vsx-ops.c.inc b/target/ppc/translate/vsx-ops.c.inc
> index c974324c4c..67fa7b2e41 100644
> --- a/target/ppc/translate/vsx-ops.c.inc
> +++ b/target/ppc/translate/vsx-ops.c.inc
> @@ -197,7 +197,6 @@ GEN_XX3FORM_NAME(xsnmsubdp, "xsnmsubmdp", 0x04, 0x17, PPC2_VSX),
> GEN_XX3FORM(xscmpeqdp, 0x0C, 0x00, PPC2_ISA300),
> GEN_XX3FORM(xscmpgtdp, 0x0C, 0x01, PPC2_ISA300),
> GEN_XX3FORM(xscmpgedp, 0x0C, 0x02, PPC2_ISA300),
> -GEN_XX3FORM(xscmpnedp, 0x0C, 0x03, PPC2_ISA300),
> GEN_XX3FORM(xscmpexpdp, 0x0C, 0x07, PPC2_ISA300),
> GEN_VSX_XFORM_300(xscmpexpqp, 0x04, 0x05, 0x00600001),
> GEN_XX2IFORM(xscmpodp, 0x0C, 0x05, PPC2_VSX),
>
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [RFC PATCH] target/ppc: Remove xscmpnedp instruction
2022-01-06 12:21 ` Cédric Le Goater
@ 2022-01-06 13:02 ` Greg Kurz
2022-01-07 1:06 ` David Gibson
0 siblings, 1 reply; 8+ messages in thread
From: Greg Kurz @ 2022-01-06 13:02 UTC (permalink / raw)
To: Cédric Le Goater
Cc: danielhb413, qemu-devel, Víctor Colombo, qemu-ppc,
matheus.ferst, david
On Thu, 6 Jan 2022 13:21:46 +0100
Cédric Le Goater <clg@kaod.org> wrote:
> On 1/6/22 12:23, Víctor Colombo wrote:
> > xscmpnedp was added in ISA v3.0 but removed in v3.0B. This patch
> > removes this instruction as it was not in the final version of v3.0.
> >
> > RFC to know if you think this is the correct approach.
>
> Usually we deprecate a feature for a minimum of two releases before
> removing it. It might be overkill for this case since the P9 processor
> implementation is based on v3.0B.
>
> I would simply remove the instruction since it never existed on any
> supported HW. I will wait for some more feedback.
>
I don't think it makes sense to keep this instruction if it only
existed in pre-GA HW.
Acked-by: Greg Kurz <groug@kaod.org>
> Reviewed-by: Cédric Le Goater <clg@kaod.org>
>
> Thanks,
>
> C.
>
>
> > Signed-off-by: Víctor Colombo <victor.colombo@eldorado.org.br>
> > ---
> > target/ppc/fpu_helper.c | 1 -
> > target/ppc/helper.h | 1 -
> > target/ppc/translate/vsx-impl.c.inc | 1 -
> > target/ppc/translate/vsx-ops.c.inc | 1 -
> > 4 files changed, 4 deletions(-)
> >
> > diff --git a/target/ppc/fpu_helper.c b/target/ppc/fpu_helper.c
> > index e5c29b53b8..f030858cf9 100644
> > --- a/target/ppc/fpu_helper.c
> > +++ b/target/ppc/fpu_helper.c
> > @@ -2270,7 +2270,6 @@ void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, \
> > VSX_SCALAR_CMP_DP(xscmpeqdp, eq, 1, 0)
> > VSX_SCALAR_CMP_DP(xscmpgedp, le, 1, 1)
> > VSX_SCALAR_CMP_DP(xscmpgtdp, lt, 1, 1)
> > -VSX_SCALAR_CMP_DP(xscmpnedp, eq, 0, 0)
> >
> > void helper_xscmpexpdp(CPUPPCState *env, uint32_t opcode,
> > ppc_vsr_t *xa, ppc_vsr_t *xb)
> > diff --git a/target/ppc/helper.h b/target/ppc/helper.h
> > index f9c72dcd50..8f02cabaf5 100644
> > --- a/target/ppc/helper.h
> > +++ b/target/ppc/helper.h
> > @@ -400,7 +400,6 @@ DEF_HELPER_5(xsnmsubdp, void, env, vsr, vsr, vsr, vsr)
> > DEF_HELPER_4(xscmpeqdp, void, env, vsr, vsr, vsr)
> > DEF_HELPER_4(xscmpgtdp, void, env, vsr, vsr, vsr)
> > DEF_HELPER_4(xscmpgedp, void, env, vsr, vsr, vsr)
> > -DEF_HELPER_4(xscmpnedp, void, env, vsr, vsr, vsr)
> > DEF_HELPER_4(xscmpexpdp, void, env, i32, vsr, vsr)
> > DEF_HELPER_4(xscmpexpqp, void, env, i32, vsr, vsr)
> > DEF_HELPER_4(xscmpodp, void, env, i32, vsr, vsr)
> > diff --git a/target/ppc/translate/vsx-impl.c.inc b/target/ppc/translate/vsx-impl.c.inc
> > index c08185e857..fbef496257 100644
> > --- a/target/ppc/translate/vsx-impl.c.inc
> > +++ b/target/ppc/translate/vsx-impl.c.inc
> > @@ -1092,7 +1092,6 @@ GEN_VSX_HELPER_X1(xstsqrtdp, 0x14, 0x06, 0, PPC2_VSX)
> > GEN_VSX_HELPER_X3(xscmpeqdp, 0x0C, 0x00, 0, PPC2_ISA300)
> > GEN_VSX_HELPER_X3(xscmpgtdp, 0x0C, 0x01, 0, PPC2_ISA300)
> > GEN_VSX_HELPER_X3(xscmpgedp, 0x0C, 0x02, 0, PPC2_ISA300)
> > -GEN_VSX_HELPER_X3(xscmpnedp, 0x0C, 0x03, 0, PPC2_ISA300)
> > GEN_VSX_HELPER_X2_AB(xscmpexpdp, 0x0C, 0x07, 0, PPC2_ISA300)
> > GEN_VSX_HELPER_R2_AB(xscmpexpqp, 0x04, 0x05, 0, PPC2_ISA300)
> > GEN_VSX_HELPER_X2_AB(xscmpodp, 0x0C, 0x05, 0, PPC2_VSX)
> > diff --git a/target/ppc/translate/vsx-ops.c.inc b/target/ppc/translate/vsx-ops.c.inc
> > index c974324c4c..67fa7b2e41 100644
> > --- a/target/ppc/translate/vsx-ops.c.inc
> > +++ b/target/ppc/translate/vsx-ops.c.inc
> > @@ -197,7 +197,6 @@ GEN_XX3FORM_NAME(xsnmsubdp, "xsnmsubmdp", 0x04, 0x17, PPC2_VSX),
> > GEN_XX3FORM(xscmpeqdp, 0x0C, 0x00, PPC2_ISA300),
> > GEN_XX3FORM(xscmpgtdp, 0x0C, 0x01, PPC2_ISA300),
> > GEN_XX3FORM(xscmpgedp, 0x0C, 0x02, PPC2_ISA300),
> > -GEN_XX3FORM(xscmpnedp, 0x0C, 0x03, PPC2_ISA300),
> > GEN_XX3FORM(xscmpexpdp, 0x0C, 0x07, PPC2_ISA300),
> > GEN_VSX_XFORM_300(xscmpexpqp, 0x04, 0x05, 0x00600001),
> > GEN_XX2IFORM(xscmpodp, 0x0C, 0x05, PPC2_VSX),
> >
>
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [RFC PATCH] target/ppc: Remove xscmpnedp instruction
2022-01-06 13:02 ` Greg Kurz
@ 2022-01-07 1:06 ` David Gibson
0 siblings, 0 replies; 8+ messages in thread
From: David Gibson @ 2022-01-07 1:06 UTC (permalink / raw)
To: Greg Kurz
Cc: danielhb413, qemu-devel, Víctor Colombo, qemu-ppc,
Cédric Le Goater, matheus.ferst
[-- Attachment #1: Type: text/plain, Size: 4503 bytes --]
On Thu, Jan 06, 2022 at 02:02:01PM +0100, Greg Kurz wrote:
> On Thu, 6 Jan 2022 13:21:46 +0100
> Cédric Le Goater <clg@kaod.org> wrote:
>
> > On 1/6/22 12:23, Víctor Colombo wrote:
> > > xscmpnedp was added in ISA v3.0 but removed in v3.0B. This patch
> > > removes this instruction as it was not in the final version of v3.0.
> > >
> > > RFC to know if you think this is the correct approach.
> >
> > Usually we deprecate a feature for a minimum of two releases before
> > removing it. It might be overkill for this case since the P9 processor
> > implementation is based on v3.0B.
> >
> > I would simply remove the instruction since it never existed on any
> > supported HW. I will wait for some more feedback.
> >
>
> I don't think it makes sense to keep this instruction if it only
> existed in pre-GA HW.
I agree. If we have a vistigial POWER9 DD1 in the cpu table we should
probably remove that anyway.
> Acked-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
>
> > Reviewed-by: Cédric Le Goater <clg@kaod.org>
> >
> > Thanks,
> >
> > C.
> >
> >
> > > Signed-off-by: Víctor Colombo <victor.colombo@eldorado.org.br>
> > > ---
> > > target/ppc/fpu_helper.c | 1 -
> > > target/ppc/helper.h | 1 -
> > > target/ppc/translate/vsx-impl.c.inc | 1 -
> > > target/ppc/translate/vsx-ops.c.inc | 1 -
> > > 4 files changed, 4 deletions(-)
> > >
> > > diff --git a/target/ppc/fpu_helper.c b/target/ppc/fpu_helper.c
> > > index e5c29b53b8..f030858cf9 100644
> > > --- a/target/ppc/fpu_helper.c
> > > +++ b/target/ppc/fpu_helper.c
> > > @@ -2270,7 +2270,6 @@ void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, \
> > > VSX_SCALAR_CMP_DP(xscmpeqdp, eq, 1, 0)
> > > VSX_SCALAR_CMP_DP(xscmpgedp, le, 1, 1)
> > > VSX_SCALAR_CMP_DP(xscmpgtdp, lt, 1, 1)
> > > -VSX_SCALAR_CMP_DP(xscmpnedp, eq, 0, 0)
> > >
> > > void helper_xscmpexpdp(CPUPPCState *env, uint32_t opcode,
> > > ppc_vsr_t *xa, ppc_vsr_t *xb)
> > > diff --git a/target/ppc/helper.h b/target/ppc/helper.h
> > > index f9c72dcd50..8f02cabaf5 100644
> > > --- a/target/ppc/helper.h
> > > +++ b/target/ppc/helper.h
> > > @@ -400,7 +400,6 @@ DEF_HELPER_5(xsnmsubdp, void, env, vsr, vsr, vsr, vsr)
> > > DEF_HELPER_4(xscmpeqdp, void, env, vsr, vsr, vsr)
> > > DEF_HELPER_4(xscmpgtdp, void, env, vsr, vsr, vsr)
> > > DEF_HELPER_4(xscmpgedp, void, env, vsr, vsr, vsr)
> > > -DEF_HELPER_4(xscmpnedp, void, env, vsr, vsr, vsr)
> > > DEF_HELPER_4(xscmpexpdp, void, env, i32, vsr, vsr)
> > > DEF_HELPER_4(xscmpexpqp, void, env, i32, vsr, vsr)
> > > DEF_HELPER_4(xscmpodp, void, env, i32, vsr, vsr)
> > > diff --git a/target/ppc/translate/vsx-impl.c.inc b/target/ppc/translate/vsx-impl.c.inc
> > > index c08185e857..fbef496257 100644
> > > --- a/target/ppc/translate/vsx-impl.c.inc
> > > +++ b/target/ppc/translate/vsx-impl.c.inc
> > > @@ -1092,7 +1092,6 @@ GEN_VSX_HELPER_X1(xstsqrtdp, 0x14, 0x06, 0, PPC2_VSX)
> > > GEN_VSX_HELPER_X3(xscmpeqdp, 0x0C, 0x00, 0, PPC2_ISA300)
> > > GEN_VSX_HELPER_X3(xscmpgtdp, 0x0C, 0x01, 0, PPC2_ISA300)
> > > GEN_VSX_HELPER_X3(xscmpgedp, 0x0C, 0x02, 0, PPC2_ISA300)
> > > -GEN_VSX_HELPER_X3(xscmpnedp, 0x0C, 0x03, 0, PPC2_ISA300)
> > > GEN_VSX_HELPER_X2_AB(xscmpexpdp, 0x0C, 0x07, 0, PPC2_ISA300)
> > > GEN_VSX_HELPER_R2_AB(xscmpexpqp, 0x04, 0x05, 0, PPC2_ISA300)
> > > GEN_VSX_HELPER_X2_AB(xscmpodp, 0x0C, 0x05, 0, PPC2_VSX)
> > > diff --git a/target/ppc/translate/vsx-ops.c.inc b/target/ppc/translate/vsx-ops.c.inc
> > > index c974324c4c..67fa7b2e41 100644
> > > --- a/target/ppc/translate/vsx-ops.c.inc
> > > +++ b/target/ppc/translate/vsx-ops.c.inc
> > > @@ -197,7 +197,6 @@ GEN_XX3FORM_NAME(xsnmsubdp, "xsnmsubmdp", 0x04, 0x17, PPC2_VSX),
> > > GEN_XX3FORM(xscmpeqdp, 0x0C, 0x00, PPC2_ISA300),
> > > GEN_XX3FORM(xscmpgtdp, 0x0C, 0x01, PPC2_ISA300),
> > > GEN_XX3FORM(xscmpgedp, 0x0C, 0x02, PPC2_ISA300),
> > > -GEN_XX3FORM(xscmpnedp, 0x0C, 0x03, PPC2_ISA300),
> > > GEN_XX3FORM(xscmpexpdp, 0x0C, 0x07, PPC2_ISA300),
> > > GEN_VSX_XFORM_300(xscmpexpqp, 0x04, 0x05, 0x00600001),
> > > GEN_XX2IFORM(xscmpodp, 0x0C, 0x05, PPC2_VSX),
> > >
> >
>
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [RFC PATCH] target/ppc: Remove xscmpnedp instruction
2022-01-06 11:23 [RFC PATCH] target/ppc: Remove xscmpnedp instruction Víctor Colombo
2022-01-06 12:21 ` Cédric Le Goater
@ 2022-01-06 18:51 ` Richard Henderson
2022-01-10 15:02 ` Cédric Le Goater
2 siblings, 0 replies; 8+ messages in thread
From: Richard Henderson @ 2022-01-06 18:51 UTC (permalink / raw)
To: Víctor Colombo, qemu-devel, qemu-ppc
Cc: danielhb413, matheus.ferst, groug, david, clg
On 1/6/22 3:23 AM, Víctor Colombo wrote:
> xscmpnedp was added in ISA v3.0 but removed in v3.0B. This patch
> removes this instruction as it was not in the final version of v3.0.
>
> RFC to know if you think this is the correct approach.
Should be fine. I assume the -cpu power9 that we intend to emulate is 3.0B?
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
r~
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [RFC PATCH] target/ppc: Remove xscmpnedp instruction
2022-01-06 11:23 [RFC PATCH] target/ppc: Remove xscmpnedp instruction Víctor Colombo
2022-01-06 12:21 ` Cédric Le Goater
2022-01-06 18:51 ` Richard Henderson
@ 2022-01-10 15:02 ` Cédric Le Goater
2022-01-10 17:57 ` Victor Colombo
2 siblings, 1 reply; 8+ messages in thread
From: Cédric Le Goater @ 2022-01-10 15:02 UTC (permalink / raw)
To: Víctor Colombo, qemu-devel, qemu-ppc
Cc: danielhb413, matheus.ferst, groug, david
On 1/6/22 12:23, Víctor Colombo wrote:
> xscmpnedp was added in ISA v3.0 but removed in v3.0B. This patch
> removes this instruction as it was not in the final version of v3.0.
Could please resend on top of the VSX combo patchset ?
Thanks,
C.
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [RFC PATCH] target/ppc: Remove xscmpnedp instruction
2022-01-10 15:02 ` Cédric Le Goater
@ 2022-01-10 17:57 ` Victor Colombo
2022-01-10 18:31 ` Cédric Le Goater
0 siblings, 1 reply; 8+ messages in thread
From: Victor Colombo @ 2022-01-10 17:57 UTC (permalink / raw)
To: Cédric Le Goater, qemu-devel, qemu-ppc
Cc: victor.colombo, danielhb413, matheus.ferst, groug, david
On 10/01/2022 12:02, Cédric Le Goater wrote:
> On 1/6/22 12:23, Víctor Colombo wrote:
>> xscmpnedp was added in ISA v3.0 but removed in v3.0B. This patch
>> removes this instruction as it was not in the final version of v3.0.
>
> Could please resend on top of the VSX combo patchset ?
>
Absolutely! I will add it between "Implement xvtlsbb instruction" and
"Refactor VSX_SCALAR_CMP_DP" instead of on top, to avoid moving it to
decodetree just to remove it later. We will send it together with the
patchset v2 later.
> Thanks,
>
> C.
Thanks for everyone's time! Best regards,
-- Víctor
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [RFC PATCH] target/ppc: Remove xscmpnedp instruction
2022-01-10 17:57 ` Victor Colombo
@ 2022-01-10 18:31 ` Cédric Le Goater
0 siblings, 0 replies; 8+ messages in thread
From: Cédric Le Goater @ 2022-01-10 18:31 UTC (permalink / raw)
To: Victor Colombo, qemu-devel, qemu-ppc
Cc: danielhb413, matheus.ferst, groug, david
On 1/10/22 18:57, Victor Colombo wrote:
>
>
> On 10/01/2022 12:02, Cédric Le Goater wrote:
>> On 1/6/22 12:23, Víctor Colombo wrote:
>>> xscmpnedp was added in ISA v3.0 but removed in v3.0B. This patch
>>> removes this instruction as it was not in the final version of v3.0.
>>
>> Could please resend on top of the VSX combo patchset ?
>>
> Absolutely! I will add it between "Implement xvtlsbb instruction" and "Refactor VSX_SCALAR_CMP_DP" instead of on top, to avoid moving it to decodetree just to remove it later. We will send it together with the patchset v2 later.
Ah. if you resend the whole, perfect. It looks correct from the
tests I did. And fix your name to Víctor !
Thanks,
Cédric.
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2022-01-10 18:35 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2022-01-06 11:23 [RFC PATCH] target/ppc: Remove xscmpnedp instruction Víctor Colombo
2022-01-06 12:21 ` Cédric Le Goater
2022-01-06 13:02 ` Greg Kurz
2022-01-07 1:06 ` David Gibson
2022-01-06 18:51 ` Richard Henderson
2022-01-10 15:02 ` Cédric Le Goater
2022-01-10 17:57 ` Victor Colombo
2022-01-10 18:31 ` Cédric Le Goater
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