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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
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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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