From: Jeff Law <jeffreyalaw@gmail.com>
To: Manolis Tsamis <manolis.tsamis@vrull.eu>
Cc: gcc-patches@gcc.gnu.org,
Richard Biener <richard.guenther@gmail.com>,
Palmer Dabbelt <palmer@rivosinc.com>,
Philipp Tomsich <philipp.tomsich@vrull.eu>,
Kito Cheng <kito.cheng@gmail.com>
Subject: Re: [PATCH 0/2] RISC-V: New pass to optimize calculation of offsets for memory operations.
Date: Sun, 18 Jun 2023 12:11:01 -0600 [thread overview]
Message-ID: <ddaa4f30-5c92-a8c2-2afb-01cf35273019@gmail.com> (raw)
In-Reply-To: <CAM3yNXrnAsJvPj3DaiQTC-p2yrp1LRR-+JFt=gHRhC09Fn86fA@mail.gmail.com>
On 6/15/23 09:30, Manolis Tsamis wrote:
>>
> Thanks for reporting. I also noticed this while reworking the
> implementation for v2 and I have fixed it among other things.
Sounds good. I stumbled across another problem while testing V2.
GEN_INT can create a non-canonical integer constant (and one might
legitimately wonder if we should eliminate GEN_INT). The specific case
I ran into was something like 0xfffffff0 for an SImode value on a 64bit
host. That should have been 0xfffffffffffffff0 to be canonical.
The right way to handle this these days is with gen_int_mode. You
should replace the two calls to GEN_INT with gen_int_mode (new_offset, mode)
Still testing the new variant...
jeff
prev parent reply other threads:[~2023-06-18 18:11 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-25 12:35 Manolis Tsamis
2023-05-25 12:35 ` [PATCH 1/2] Implementation of new RISCV optimizations pass: fold-mem-offsets Manolis Tsamis
2023-05-25 13:01 ` Richard Biener
2023-05-25 13:25 ` Manolis Tsamis
2023-05-25 13:31 ` Jeff Law
2023-05-25 13:50 ` Richard Biener
2023-05-25 14:02 ` Manolis Tsamis
2023-05-29 23:30 ` Jeff Law
2023-05-31 12:19 ` Manolis Tsamis
2023-05-31 14:00 ` Jeff Law
2023-05-25 14:13 ` Jeff Law
2023-05-25 14:18 ` Philipp Tomsich
2023-06-08 5:37 ` Jeff Law
2023-06-12 7:36 ` Manolis Tsamis
2023-06-12 14:37 ` Jeff Law
2023-06-09 0:57 ` Jeff Law
2023-06-12 7:32 ` Manolis Tsamis
2023-06-12 21:58 ` Jeff Law
2023-06-15 17:34 ` Manolis Tsamis
2023-06-10 15:49 ` Jeff Law
2023-06-12 7:41 ` Manolis Tsamis
2023-06-12 21:36 ` Jeff Law
2023-05-25 12:35 ` [PATCH 2/2] cprop_hardreg: Enable propagation of the stack pointer if possible Manolis Tsamis
2023-05-25 13:38 ` Jeff Law
2023-05-31 12:15 ` Manolis Tsamis
2023-06-07 22:16 ` Jeff Law
2023-06-07 22:18 ` Jeff Law
2023-06-08 6:15 ` Manolis Tsamis
2023-06-15 20:13 ` Philipp Tomsich
2023-06-19 16:57 ` Thiago Jung Bauermann
2023-06-19 17:07 ` Manolis Tsamis
2023-06-19 23:40 ` Andrew Pinski
2023-06-19 23:48 ` Andrew Pinski
2023-06-20 2:16 ` Jeff Law
2023-06-20 4:52 ` Tamar Christina
2023-06-20 5:00 ` Jeff Law
2023-06-21 23:42 ` Thiago Jung Bauermann
2023-06-22 7:37 ` Richard Biener
2023-06-22 7:58 ` Philipp Tomsich
2023-05-25 13:42 ` [PATCH 0/2] RISC-V: New pass to optimize calculation of offsets for memory operations Jeff Law
2023-05-25 13:57 ` Manolis Tsamis
2023-06-15 15:04 ` Jeff Law
2023-06-15 15:30 ` Manolis Tsamis
2023-06-15 15:56 ` Jeff Law
2023-06-18 18:11 ` Jeff Law [this message]
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