Law ; rdapp.gcc
; kito.cheng
Cc: gcc-patches ; Wang, Yanzhang
Subject: RE: Re: [PATCH v7] RISC-V: Support CALL for RVV floating-point dynamic
rounding
Thanks Juzhe and Jeff for suggestion. The approach like emit_insn_before_noloc
will result in below ICE here.
../../../.././gcc/libs
handling when end bb is CALL.
Pan
From: 钟居哲
Sent: Thursday, July 27, 2023 6:56 AM
To: Jeff Law ; rdapp.gcc ;
kito.cheng ; Li, Pan2
Cc: gcc-patches ; Wang, Yanzhang
Subject: Re: Re: [PATCH v7] RISC-V: Support CALL for RVV floating-point dynamic
rounding
Thanks Jeff.
Hi, Pan:
Plz try (insert
Thanks Jeff.
Hi, Pan:
Plz try (insert edge and put 'frrm' on that edge) instead of insert end of
block to see whether it works
(I have tried onece but I don't remember what happens).
Try that with following codes:
edge eg;
edge_iterator ei;
FOR_EACH_EDGE (eg, ei, bb->succs)
{
start_sequence ();
Hi, Jeff.
insert_insn_end_basic_block is to handle this following case:
bb 1:
...
CALL.>BB_END of bb
bb 2:
vfadd rne
You can see there is no instructions after CALL.
So you we use insert_insn_end_basic_block insert a "frrm" at the end of the bb
1.
I know typically it's better to insert a
钟居哲
*Sent:* Wednesday, July 26, 2023 10:18 PM
*To:* rdapp.gcc ; Li, Pan2
*Cc:* rdapp.gcc ; kito.cheng ;
gcc-patches ; Wang, Yanzhang <
yanzhang.w...@intel.com>
*Subject:* Re: Re: [PATCH v7] RISC-V: Support CALL for RVV floating-point
dynamic rounding
Explicitly backup and restore for
cc-patches ; Wang, Yanzhang <
> yanzhang.w...@intel.com>
> *Subject:* Re: Re: [PATCH v7] RISC-V: Support CALL for RVV floating-point
> dynamic rounding
>
>
>
> Explicitly backup and restore for each intrinsic just the same as we did
> for CALL in this patch.
>
>
>
fully tests depend on this.
Of course, I am working on PATCH v8 and thanks again for Robin’s comments.
Pan
From: 钟居哲
Sent: Wednesday, July 26, 2023 10:18 PM
To: rdapp.gcc ; Li, Pan2
Cc: rdapp.gcc ; kito.cheng ;
gcc-patches ; Wang, Yanzhang
Subject: Re: Re: [PATCH v7] RISC-V: Support CALL for
Explicitly backup and restore for each intrinsic just the same as we did for
CALL in this patch.
I can't have the data to prove how good we use LCM/PRE of mode switching but I
trust it.
Since the the LCM/PRE is the key optimization method of VSETVL PASS which is
doing good job on VSETVL instru
