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* [Bug target/101019] New: GCC should consider using PLI/SLDI/PADDI to load up 64-bit constants on power10
@ 2021-06-10 15:48 meissner at gcc dot gnu.org
2021-06-10 15:51 ` [Bug target/101019] " meissner at gcc dot gnu.org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: meissner at gcc dot gnu.org @ 2021-06-10 15:48 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101019
Bug ID: 101019
Summary: GCC should consider using PLI/SLDI/PADDI to load up
64-bit constants on power10
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: meissner at gcc dot gnu.org
Target Milestone: ---
GCC should consider using a sequence of PLI, SLDI, and PADDI to load up 64-bit
constants on power10.
For example:
long foo_2 (void) { return (1L << 53) | (1L << 35) | (1L << 30) | (1L << 2); }
Generates:
lis 3,0x20
ori 3,3,0x8
sldi 3,3,32
oris 3,3,0x4000
ori 3,3,0x4
when it could generate:
pli 3,2097160
sldi 3,3,32
paddi 3,3,1073741828
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug target/101019] GCC should consider using PLI/SLDI/PADDI to load up 64-bit constants on power10
2021-06-10 15:48 [Bug target/101019] New: GCC should consider using PLI/SLDI/PADDI to load up 64-bit constants on power10 meissner at gcc dot gnu.org
@ 2021-06-10 15:51 ` meissner at gcc dot gnu.org
2021-06-10 19:35 ` meissner at gcc dot gnu.org
2024-04-11 22:58 ` meissner at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: meissner at gcc dot gnu.org @ 2021-06-10 15:51 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101019
Michael Meissner <meissner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
Last reconfirmed| |2021-06-10
Severity|normal |enhancement
CC| |bergner at gcc dot gnu.org,
| |dje at gcc dot gnu.org,
| |meissner at gcc dot gnu.org,
| |segher at gcc dot gnu.org,
| |willschm at gcc dot gnu.org,
| |wschmidt at gcc dot gnu.org
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug target/101019] GCC should consider using PLI/SLDI/PADDI to load up 64-bit constants on power10
2021-06-10 15:48 [Bug target/101019] New: GCC should consider using PLI/SLDI/PADDI to load up 64-bit constants on power10 meissner at gcc dot gnu.org
2021-06-10 15:51 ` [Bug target/101019] " meissner at gcc dot gnu.org
@ 2021-06-10 19:35 ` meissner at gcc dot gnu.org
2024-04-11 22:58 ` meissner at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: meissner at gcc dot gnu.org @ 2021-06-10 19:35 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101019
Michael Meissner <meissner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |meissner at gcc dot gnu.org
--- Comment #1 from Michael Meissner <meissner at gcc dot gnu.org> ---
I'm working on patches.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug target/101019] GCC should consider using PLI/SLDI/PADDI to load up 64-bit constants on power10
2021-06-10 15:48 [Bug target/101019] New: GCC should consider using PLI/SLDI/PADDI to load up 64-bit constants on power10 meissner at gcc dot gnu.org
2021-06-10 15:51 ` [Bug target/101019] " meissner at gcc dot gnu.org
2021-06-10 19:35 ` meissner at gcc dot gnu.org
@ 2024-04-11 22:58 ` meissner at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: meissner at gcc dot gnu.org @ 2024-04-11 22:58 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101019
Michael Meissner <meissner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|ASSIGNED |RESOLVED
--- Comment #2 from Michael Meissner <meissner at gcc dot gnu.org> ---
The changes for this were checked into the master branch on December 12th, 2023
by Jiufu Guo <guojiufu@linux.ibm.com>.
^ permalink raw reply [flat|nested] 4+ messages in thread
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2021-06-10 15:48 [Bug target/101019] New: GCC should consider using PLI/SLDI/PADDI to load up 64-bit constants on power10 meissner at gcc dot gnu.org
2021-06-10 15:51 ` [Bug target/101019] " meissner at gcc dot gnu.org
2021-06-10 19:35 ` meissner at gcc dot gnu.org
2024-04-11 22:58 ` meissner at gcc dot gnu.org
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