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* [Bug target/70928] Load simple float constants via VSX operations on PowerPC
[not found] <bug-70928-4@http.gcc.gnu.org/bugzilla/>
@ 2020-11-14 11:21 ` jens.seifert at de dot ibm.com
2024-03-27 17:56 ` meissner at gcc dot gnu.org
2024-03-27 19:30 ` segher at gcc dot gnu.org
2 siblings, 0 replies; 3+ messages in thread
From: jens.seifert at de dot ibm.com @ 2020-11-14 11:21 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70928
Jens Seifert <jens.seifert at de dot ibm.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jens.seifert at de dot ibm.com
--- Comment #4 from Jens Seifert <jens.seifert at de dot ibm.com> ---
values -16.0..+15.0.
vspltisw 0,<integer value>
xvcvsxwdp 32,32
values -16.0f..+15.0f
vspltisw 0,<integer value>
xvcvsxwsp 32,32
-0.0 / 0x8000000000000000
xxlxor 32,32,32
xvnabsdp 32,32 or xvnegdp 32,32
-0.0f / 0x80000000
xxlxor 32,32,32
xvnabssp 32,32 or xvnegsp 32,32
0x7FFFFFFFFFFFFFFF
vspltisw 0,-1
xvabsdp 32,32
0x7FFFFFFF
vspltisw 0,-1
xvabssp 32,32
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug target/70928] Load simple float constants via VSX operations on PowerPC
[not found] <bug-70928-4@http.gcc.gnu.org/bugzilla/>
2020-11-14 11:21 ` [Bug target/70928] Load simple float constants via VSX operations on PowerPC jens.seifert at de dot ibm.com
@ 2024-03-27 17:56 ` meissner at gcc dot gnu.org
2024-03-27 19:30 ` segher at gcc dot gnu.org
2 siblings, 0 replies; 3+ messages in thread
From: meissner at gcc dot gnu.org @ 2024-03-27 17:56 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70928
Michael Meissner <meissner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Last reconfirmed| |2024-03-27
Status|UNCONFIRMED |NEW
--- Comment #5 from Michael Meissner <meissner at gcc dot gnu.org> ---
Power10 can now load all SFmode constants and many DFmode constants via the
XXSPLTIDP instructions. As time goes by, I would imagine doing this
optimization for power8 and power9 machines becomes less important.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug target/70928] Load simple float constants via VSX operations on PowerPC
[not found] <bug-70928-4@http.gcc.gnu.org/bugzilla/>
2020-11-14 11:21 ` [Bug target/70928] Load simple float constants via VSX operations on PowerPC jens.seifert at de dot ibm.com
2024-03-27 17:56 ` meissner at gcc dot gnu.org
@ 2024-03-27 19:30 ` segher at gcc dot gnu.org
2 siblings, 0 replies; 3+ messages in thread
From: segher at gcc dot gnu.org @ 2024-03-27 19:30 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70928
--- Comment #6 from Segher Boessenkool <segher at gcc dot gnu.org> ---
"All"... not the non-finite denormals ;-)
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2024-03-27 19:30 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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[not found] <bug-70928-4@http.gcc.gnu.org/bugzilla/>
2020-11-14 11:21 ` [Bug target/70928] Load simple float constants via VSX operations on PowerPC jens.seifert at de dot ibm.com
2024-03-27 17:56 ` meissner at gcc dot gnu.org
2024-03-27 19:30 ` segher at gcc dot gnu.org
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