Message-
From: Maxim Kuvyrkov
Sent: Wednesday, September 22, 2021 12:06
To: Mekhanoshin, Stanislav
Cc: linaro-toolchain
Subject: Re: [TCWG CI] 456.hmmer slowed down by 6% after llvm: Allow
rematerialization of virtual reg uses
[CAUTION: External Email]
Hi Stanislav,
That's fair;
bject: Re: [TCWG CI] 456.hmmer slowed down by 6% after llvm: Allow
rematerialization of virtual reg uses
[CAUTION: External Email]
Hi Stanislav,
Attached is a tarball with -save-temps output (pre-processed source and
generated assembly) for first-bad run (your commit) and last-good run
(imme
, Stanislav
Sent: Wednesday, September 22, 2021 12:09
To: Maxim Kuvyrkov
Cc: linaro-toolchain
Subject: RE: [TCWG CI] 456.hmmer slowed down by 6% after llvm: Allow
rematerialization of virtual reg uses
I assume some of the newly rematerialized instructions caused perf drops.
Probably some very specific
, Stanislav
Cc: linaro-toolchain
Subject: Re: [TCWG CI] 456.hmmer slowed down by 6% after llvm: Allow
rematerialization of virtual reg uses
[CAUTION: External Email]
Hi Stanislav,
FYI, your patch seems to be slowing down two of SPEC CPU2006 tests on 32-bit
ARM at -O2 and -O3 optimization
> report.
>
> Stas
>
> From: Mekhanoshin, Stanislav
> Sent: Thursday, September 23, 2021 11:48
> To: Maxim Kuvyrkov
> Cc: linaro-toolchain
> Subject: RE: [TCWG CI] 456.hmmer slowed down by 6% after llvm: Allow
> rematerialization of virtual reg uses
>
>
t; Sent: Wednesday, September 22, 2021 12:09
> To: Maxim Kuvyrkov
> Cc: linaro-toolchain
> Subject: RE: [TCWG CI] 456.hmmer slowed down by 6% after llvm: Allow
> rematerialization of virtual reg uses
>
> I assume some of the newly rematerialized instructions caused perf drops.
>
vyrkov
> Sent: Wednesday, September 15, 2021 5:52
> To: Mekhanoshin, Stanislav
> Cc: linaro-toolchain
> Subject: Re: [TCWG CI] 456.hmmer slowed down by 6% after llvm: Allow
> rematerialization of virtual reg uses
>
> [CAUTION: External Email]
>
> Hi Stanislav,
>
&g
Maxim Kuvyrkov
> Sent: Wednesday, September 22, 2021 5:16
> To: Mekhanoshin, Stanislav
> Cc: linaro-toolchain
> Subject: Re: [TCWG CI] 456.hmmer slowed down by 6% after llvm: Allow
> rematerialization of virtual reg uses
>
> [CAUTION: External Email]
>
> Hi Stanislav
Hi Stanislav,
FYI, your patch seems to be slowing down two of SPEC CPU2006 tests on 32-bit
ARM at -O2 and -O3 optimization levels.
--
Maxim Kuvyrkov
https://www.linaro.org
> On 15 Sep 2021, at 12:54, ci_not...@linaro.org wrote:
>
> After llvm commit 92c1fd19abb15bc68b1127a26137a69e033cdb39
> A
