> -Original Message-
> From: Richard Sandiford [mailto:richard.sandif...@arm.com]
> Sent: Tuesday, November 10, 2020 7:54 PM
> To: xiezhiheng
> Cc: gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH PR94442] [AArch64] Redundant ldp/stp instructions
> emitted at -O3
&g
> -Original Message-
> From: Richard Sandiford [mailto:richard.sandif...@arm.com]
> Sent: Tuesday, November 3, 2020 9:57 PM
> To: xiezhiheng
> Cc: gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH PR94442] [AArch64] Redundant ldp/stp instructions
> emitted at -O3
>
> -Original Message-
> From: Richard Sandiford [mailto:richard.sandif...@arm.com]
> Sent: Friday, October 30, 2020 6:24 PM
> To: xiezhiheng
> Cc: gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH PR94442] [AArch64] Redundant ldp/stp instructions
> emitted at -O3
&g
> -Original Message-
> From: Richard Sandiford [mailto:richard.sandif...@arm.com]
> Sent: Monday, October 26, 2020 9:03 PM
> To: xiezhiheng
> Cc: Richard Biener ; gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH PR94442] [AArch64] Redundant ldp/stp instructions
> emit
> -Original Message-
> From: Richard Sandiford [mailto:richard.sandif...@arm.com]
> Sent: Wednesday, October 21, 2020 12:54 AM
> To: xiezhiheng
> Cc: Richard Biener ; gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH PR94442] [AArch64] Redundant ldp/stp instruction
> -Original Message-
> From: Richard Sandiford [mailto:richard.sandif...@arm.com]
> Sent: Tuesday, October 13, 2020 4:08 PM
> To: xiezhiheng
> Cc: Richard Biener ; gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH PR94442] [AArch64] Redundant ldp/stp instructions
> e
> -Original Message-
> From: Richard Sandiford [mailto:richard.sandif...@arm.com]
> Sent: Thursday, August 27, 2020 4:08 PM
> To: xiezhiheng
> Cc: Richard Biener ; gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH PR94442] [AArch64] Redundant ldp/stp instruction
> -Original Message-
> From: Richard Sandiford [mailto:richard.sandif...@arm.com]
> Sent: Wednesday, August 26, 2020 6:14 PM
> To: xiezhiheng
> Cc: Richard Biener ; gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH PR94442] [AArch64] Redundant ldp/stp instructions
> e
> -Original Message-
> From: Richard Sandiford [mailto:richard.sandif...@arm.com]
> Sent: Tuesday, August 25, 2020 7:08 PM
> To: xiezhiheng
> Cc: Richard Biener ; gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH PR94442] [AArch64] Redundant ldp/stp instruction
> -Original Message-
> From: Richard Sandiford [mailto:richard.sandif...@arm.com]
> Sent: Friday, August 21, 2020 5:02 PM
> To: xiezhiheng
> Cc: Richard Biener ; gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH PR94442] [AArch64] Redundant ldp/stp instructions
>
> -Original Message-
> From: Richard Sandiford [mailto:richard.sandif...@arm.com]
> Sent: Thursday, August 20, 2020 4:55 PM
> To: xiezhiheng
> Cc: Richard Biener ; gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH PR94442] [AArch64] Redundant ldp/stp instruction
> -Original Message-
> From: Richard Sandiford [mailto:richard.sandif...@arm.com]
> Sent: Wednesday, August 19, 2020 6:06 PM
> To: xiezhiheng
> Cc: Richard Biener ; gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH PR94442] [AArch64] Redundant ldp/stp instruction
> -Original Message-
> From: Richard Sandiford [mailto:richard.sandif...@arm.com]
> Sent: Wednesday, August 5, 2020 12:26 AM
> To: xiezhiheng
> Cc: Richard Biener ; gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH PR94442] [AArch64] Redundant ldp/stp instruction
> -Original Message-
> From: Richard Sandiford [mailto:richard.sandif...@arm.com]
> Sent: Monday, August 3, 2020 9:55 PM
> To: xiezhiheng
> Cc: Richard Biener ; gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH PR94442] [AArch64] Redundant ldp/stp instructions
> e
> -Original Message-
> From: Richard Sandiford [mailto:richard.sandif...@arm.com]
> Sent: Friday, July 31, 2020 5:03 PM
> To: xiezhiheng
> Cc: Richard Biener ; gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH PR94442] [AArch64] Redundant ldp/stp instructions
> emitted a
> -Original Message-
> From: Richard Sandiford [mailto:richard.sandif...@arm.com]
> Sent: Friday, July 17, 2020 5:04 PM
> To: xiezhiheng
> Cc: Richard Biener ; gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH PR94442] [AArch64] Redundant ldp/stp instructions
>
> -Original Message-
> From: Richard Sandiford [mailto:richard.sandif...@arm.com]
> Sent: Thursday, July 16, 2020 8:42 PM
> To: xiezhiheng
> Cc: Richard Biener ; gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH PR94442] [AArch64] Redundant ldp/stp instruction
> -Original Message-
> From: Richard Sandiford [mailto:richard.sandif...@arm.com]
> Sent: Tuesday, July 7, 2020 10:08 PM
> To: xiezhiheng
> Cc: Richard Biener ; gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH PR94442] [AArch64] Redundant ldp/stp instructions
> emitted a
> -Original Message-
> From: Richard Sandiford [mailto:richard.sandif...@arm.com]
> Sent: Monday, July 6, 2020 5:31 PM
> To: xiezhiheng
> Cc: Richard Biener ; gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH PR94442] [AArch64] Redundant ldp/stp instructions
> emitted at
> -Original Message-
> From: Richard Biener [mailto:richard.guent...@gmail.com]
> Sent: Thursday, July 2, 2020 10:46 PM
> To: xiezhiheng
> Cc: gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH PR94442] [AArch64] Redundant ldp/stp instructions
> emitted at -O3
>
>
Hi,
This is a fix for pr94442.
I modify get_inner_reference to handle the case for MEM[ptr, off].
I extract the "off" and add it to the recorded offset, then I build a
MEM[ptr, 0] and return it later.
diff --git a/gcc/expr.c b/gcc/expr.c
index 3c68b0d754c..8cc18449a0c 100644
--- a/gcc/expr.c
+++
> -Original Message-
> From: Richard Biener [mailto:richard.guent...@gmail.com]
> Sent: Tuesday, April 14, 2020 4:39 PM
> To: xiezhiheng
> Cc: gcc-patches@gcc.gnu.org
> Subject: Re: [PING] [PATCH PR94442] [AArch64] Redundant ldp/stp
> instructions emitted at -O3
>
Ping for:
<https://gcc.gnu.org/pipermail/gcc-patches/2020-April/543102.html>
Xie Zhiheng
> -Original Message-
> From: xiezhiheng
> Sent: Thursday, April 2, 2020 2:35 PM
> To: 'gcc-patches@gcc.gnu.org'
> Subject: [PATCH PR94442] [AArch64] Redundant ldp/st
Hi,
I've created a bug for this issue:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94442
And I'm going to solve this problem by propagating def's insn to its use
when they are at the same loop in fwprop pass.
I mean something like:
diff --git a/gcc/fwprop.c b/gcc/fwprop.c
index 705d2885a
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