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* [Bug tree-optimization/79333] FRE/PRE do not allow folding to look at SSA defs during elimination
[not found] <bug-79333-4@http.gcc.gnu.org/bugzilla/>
@ 2021-05-04 13:45 ` rguenth at gcc dot gnu.org
2021-05-05 7:59 ` cvs-commit at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 4+ messages in thread
From: rguenth at gcc dot gnu.org @ 2021-05-04 13:45 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79333
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|FRE/PRE do not fold calls |FRE/PRE do not allow
|not-in-place and do not |folding to look at SSA defs
|allow folding to look at |during elimination
|SSA defs during elimination |
Last reconfirmed|2017-02-02 00:00:00 |2021-5-4
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
We're no longer folding in-place since the RPO VN rewrite but we're still not
allowing fold_stmt to follow SSA edges.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/79333] FRE/PRE do not allow folding to look at SSA defs during elimination
[not found] <bug-79333-4@http.gcc.gnu.org/bugzilla/>
2021-05-04 13:45 ` [Bug tree-optimization/79333] FRE/PRE do not allow folding to look at SSA defs during elimination rguenth at gcc dot gnu.org
@ 2021-05-05 7:59 ` cvs-commit at gcc dot gnu.org
2021-05-05 8:02 ` rguenth at gcc dot gnu.org
2021-05-07 15:55 ` cvs-commit at gcc dot gnu.org
3 siblings, 0 replies; 4+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-05-05 7:59 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79333
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>:
https://gcc.gnu.org/g:d846f225c25c5885250c303c8d118caa08c447ab
commit r12-476-gd846f225c25c5885250c303c8d118caa08c447ab
Author: Richard Biener <rguenther@suse.de>
Date: Tue May 4 15:51:20 2021 +0200
tree-optimization/79333 - fold stmts following SSA edges in VN
This makes sure to follow SSA edges when folding eliminated stmts.
This reaps the same benefit as forwprop folding all stmts, not
waiting for one to produce copysign in the new testcase.
2021-05-04 Richard Biener <rguenther@suse.de>
PR tree-optimization/79333
* tree-ssa-sccvn.c (eliminate_dom_walker::eliminate_stmt):
Fold stmt following SSA edges.
* gcc.dg/tree-ssa/ssa-fre-94.c: New testcase.
* gcc.dg/graphite/fuse-1.c: Adjust.
* gcc.dg/pr43864-4.c: Likewise.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/79333] FRE/PRE do not allow folding to look at SSA defs during elimination
[not found] <bug-79333-4@http.gcc.gnu.org/bugzilla/>
2021-05-04 13:45 ` [Bug tree-optimization/79333] FRE/PRE do not allow folding to look at SSA defs during elimination rguenth at gcc dot gnu.org
2021-05-05 7:59 ` cvs-commit at gcc dot gnu.org
@ 2021-05-05 8:02 ` rguenth at gcc dot gnu.org
2021-05-07 15:55 ` cvs-commit at gcc dot gnu.org
3 siblings, 0 replies; 4+ messages in thread
From: rguenth at gcc dot gnu.org @ 2021-05-05 8:02 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79333
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |12.0
Resolution|--- |FIXED
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed for GCC 12.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/79333] FRE/PRE do not allow folding to look at SSA defs during elimination
[not found] <bug-79333-4@http.gcc.gnu.org/bugzilla/>
` (2 preceding siblings ...)
2021-05-05 8:02 ` rguenth at gcc dot gnu.org
@ 2021-05-07 15:55 ` cvs-commit at gcc dot gnu.org
3 siblings, 0 replies; 4+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-05-07 15:55 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79333
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Christophe Lyon <clyon@gcc.gnu.org>:
https://gcc.gnu.org/g:601191b2a48cb8f4657bb2fa2270a7fde9d52e9c
commit r12-617-g601191b2a48cb8f4657bb2fa2270a7fde9d52e9c
Author: Christophe Lyon <christophe.lyon@linaro.org>
Date: Fri May 7 15:52:35 2021 +0000
tree-optimization/79333 - fold stmts following SSA edges in VN
copysign is only available with c99_runtime, skip ssa-fre-94.c
otherwise.
2021-05-07 Christophe Lyon <christophe.lyon@linaro.org>
PR tree-optimization/79333
gcc/testsuite/
* gcc.dg/tree-ssa/ssa-fre-94.c: Require c99_runtime.
^ permalink raw reply [flat|nested] 4+ messages in thread
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2021-05-04 13:45 ` [Bug tree-optimization/79333] FRE/PRE do not allow folding to look at SSA defs during elimination rguenth at gcc dot gnu.org
2021-05-05 7:59 ` cvs-commit at gcc dot gnu.org
2021-05-05 8:02 ` rguenth at gcc dot gnu.org
2021-05-07 15:55 ` cvs-commit at gcc dot gnu.org
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