> Hello. > > Not being expert in multi_target area, however it consists of 2 passes. The > first > one (ipa_target_clone) is responsible for creation of multiple targets for > functions > decorated with __attribute__((target_clones("xxx"))). I guess the pass should > be > called just in LGEN phase and consecutive clone materialization takes care of > these > clones. I'm also adding lto test-case.
It is declared as SIMPLE_IPA_PASS. Then it should either run early (i.e. be in the queue after pass_ipa_lower_emutls (to run at compile stage) or before pass_ipa_pta (to run at lgen stage). If it really needs to run in the middle of IPA pass queue, then it should be declared as IPA_PASS and run at WPA only. Honza > > Patch can bootstrap on ppc64le-redhat-linux and survives regression tests. > mvc test-cases work find on x86_64-linux-gnu. > > Ready to be installed? > Martin > >From 7ec7045680e10838c43b2713a4fa34b205ba5004 Mon Sep 17 00:00:00 2001 > From: marxin <mli...@suse.cz> > Date: Fri, 13 Jan 2017 15:26:45 +0100 > Subject: [PATCH] Make multiple_target.c aware of LTO (PR lto/66295) > > gcc/ChangeLog: > > 2017-01-13 Martin Liska <mli...@suse.cz> > > PR lto/66295 > * multiple_target.c (pass_target_clone::gate): Run the pass > just in LGEN (in LTO mode). > > gcc/testsuite/ChangeLog: > > 2017-01-13 Martin Liska <mli...@suse.cz> > > PR lto/66295 > * gcc.target/i386/mvc9.c: New test. > --- > gcc/multiple_target.c | 2 +- > gcc/testsuite/gcc.target/i386/mvc9.c | 29 +++++++++++++++++++++++++++++ > 2 files changed, 30 insertions(+), 1 deletion(-) > create mode 100644 gcc/testsuite/gcc.target/i386/mvc9.c > > diff --git a/gcc/multiple_target.c b/gcc/multiple_target.c > index 5be3980db20..3df1e297122 100644 > --- a/gcc/multiple_target.c > +++ b/gcc/multiple_target.c > @@ -378,7 +378,7 @@ public: > bool > pass_target_clone::gate (function *) > { > - return true; > + return !flag_wpa && !flag_ltrans; > } > > } // anon namespace > diff --git a/gcc/testsuite/gcc.target/i386/mvc9.c > b/gcc/testsuite/gcc.target/i386/mvc9.c > new file mode 100644 > index 00000000000..d510b6c18b4 > --- /dev/null > +++ b/gcc/testsuite/gcc.target/i386/mvc9.c > @@ -0,0 +1,29 @@ > +/* { dg-do run } */ > +/* { dg-require-ifunc "" } */ > +/* { dg-require-effective-target lto } */ > +/* { dg-options "-flto" } */ > + > +__attribute__((target_clones("avx","arch=slm","arch=core-avx2","default"))) > +int > +foo () > +{ > + return -2; > +} > + > +int > +bar () > +{ > + return 2; > +} > + > +int > +main () > +{ > + int r = 0; > + r += bar (); > + r += foo (); > + r += bar (); > + r += foo (); > + r += bar (); > + return r - 2; > +} > -- > 2.11.0 >