On Wed, Oct 11, 2017 at 03:39:21PM -0400, Vladimir Makarov wrote: > The following patch fixes > > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82353 > > LRA did not update hard reg liveness on bb borders for hard regs which are > part of insn patterns like CFLAGS reg. It was ok for inheritance in EBB > which creates only moves and they usually have no embedded hard regs in the > patterns. But LRA rematerialization needs this. So this patch implements > such hard reg liveness updates. > > The patch was successfully bootstrapped and tested on x86-64. > > Committed as rev. 253656.
Thanks for the fix, however I believe we do not want C++ tests in gcc.target/*/, those are historically handled in g++.dg/ (and if we wanted to have them, we'd introduce g++.target/*/), furthermore the test requires working -fsanitize=undefined and such tests belog into g++.dg/ubsan/ if they are in C++. And finally, the test fails on i386, where we rematerialize something else, so I think we should just limit it to lp64. Tested on x86_64-linux -m32/-m64, and verified with cc1plus before your change, ok for trunk? 2017-10-11 Jakub Jelinek <ja...@redhat.com> PR target/82353 * gcc.target/i386/i386.exp (tests): Revert the '.C' extension change. * gcc.target/i386/pr82353.C: Moved to ... * g++.dg/ubsan/pr82353.C: ... here. Restrict to i?86/x86_64 && lp64. --- gcc/testsuite/gcc.target/i386/i386.exp.jj 2017-10-11 22:37:51.000000000 +0200 +++ gcc/testsuite/gcc.target/i386/i386.exp 2017-10-11 22:59:47.455746874 +0200 @@ -445,7 +445,7 @@ if [runtest_file_p $runtests $srcdir/$su } # Everything else. -set tests [lsort [glob -nocomplain $srcdir/$subdir/*.\[cCS\]]] +set tests [lsort [glob -nocomplain $srcdir/$subdir/*.\[cS\]]] set tests [prune $tests $srcdir/$subdir/vect-args.c] # Main loop. --- gcc/testsuite/gcc.target/i386/pr82353.C.jj 2017-10-11 22:37:51.000000000 +0200 +++ gcc/testsuite/gcc.target/i386/pr82353.C 2017-10-11 23:01:37.618390302 +0200 @@ -1,60 +0,0 @@ -/* { dg-do compile } */ -/* { dg-options "-O2 -std=c++11 -fsanitize=undefined -fno-sanitize-recover=undefined -w -fdump-rtl-reload" } */ - -extern unsigned long tf_2_var_1, tf_2_var_21; -extern bool tf_2_var_2, tf_2_var_24, tf_2_var_6, tf_2_var_5; -extern unsigned char tf_2_var_16, tf_2_var_31; -extern short tf_2_var_69; -extern unsigned tf_2_var_233; -struct tf_2_struct_1 { - short member_1_0 : 27; - long member_1_1 : 10; -}; -struct a { - int member_2_0 : 5; -}; -struct tf_2_struct_3 { - static tf_2_struct_1 member_3_0; -}; -struct tf_2_struct_4 { - static unsigned member_4_0; - a member_4_1; -}; -struct tf_2_struct_5 { - tf_2_struct_1 member_5_2; - tf_2_struct_4 member_5_4; -}; -struct tf_2_struct_6 { - tf_2_struct_5 member_6_2; - short member_6_4; -} extern tf_2_struct_obj_2; -extern tf_2_struct_3 tf_2_struct_obj_8; -tf_2_struct_1 a; -tf_2_struct_5 b; -tf_2_struct_1 tf_2_struct_3::member_3_0; -unsigned tf_2_struct_4::member_4_0; -void tf_2_init() { - a.member_1_1 = tf_2_struct_obj_2.member_6_2.member_5_2.member_1_1 = 5; -} -void tf_2_foo() { - int c = tf_2_struct_obj_2.member_6_2.member_5_4.member_4_1.member_2_0 - - -~tf_2_struct_obj_2.member_6_4 * char(90284000534361); - tf_2_struct_obj_8.member_3_0.member_1_0 = - tf_2_var_24 > - tf_2_var_21 * a.member_1_0 * tf_2_var_2 - tf_2_var_5 % a.member_1_1; - if ((~(tf_2_var_31 * tf_2_var_6) && - -~tf_2_struct_obj_2.member_6_4 * 90284000534361) % - ~tf_2_var_31 * tf_2_var_6) - b.member_5_2.member_1_0 << tf_2_var_16 << tf_2_var_1; - tf_2_var_233 = -~tf_2_struct_obj_2.member_6_4 * char(90284000534361); - int d(tf_2_struct_obj_2.member_6_4); - if (b.member_5_2.member_1_0) - b.member_5_2.member_1_1 = c; - bool e(~-~tf_2_struct_obj_2.member_6_4); - a.member_1_1 % e; - if (tf_2_var_5 / tf_2_struct_obj_2.member_6_2.member_5_2.member_1_1) - b.member_5_4.member_4_0 = tf_2_var_21 * a.member_1_0 * tf_2_var_2; - tf_2_var_69 = tf_2_var_6; -} - -/* { dg-final { scan-rtl-dump-not "Inserting rematerialization insn" "reload" } } */ --- gcc/testsuite/g++.dg/ubsan/pr82353.C.jj 2017-10-11 23:00:59.442860406 +0200 +++ gcc/testsuite/g++.dg/ubsan/pr82353.C 2017-10-11 23:04:27.264301238 +0200 @@ -0,0 +1,60 @@ +/* { dg-do compile { target { { i?86-*-* x86_64-*-* } && lp64 } } } */ +/* { dg-options "-O2 -std=c++11 -fsanitize=undefined -fno-sanitize-recover=undefined -w -fdump-rtl-reload" } */ + +extern unsigned long tf_2_var_1, tf_2_var_21; +extern bool tf_2_var_2, tf_2_var_24, tf_2_var_6, tf_2_var_5; +extern unsigned char tf_2_var_16, tf_2_var_31; +extern short tf_2_var_69; +extern unsigned tf_2_var_233; +struct tf_2_struct_1 { + short member_1_0 : 27; + long member_1_1 : 10; +}; +struct a { + int member_2_0 : 5; +}; +struct tf_2_struct_3 { + static tf_2_struct_1 member_3_0; +}; +struct tf_2_struct_4 { + static unsigned member_4_0; + a member_4_1; +}; +struct tf_2_struct_5 { + tf_2_struct_1 member_5_2; + tf_2_struct_4 member_5_4; +}; +struct tf_2_struct_6 { + tf_2_struct_5 member_6_2; + short member_6_4; +} extern tf_2_struct_obj_2; +extern tf_2_struct_3 tf_2_struct_obj_8; +tf_2_struct_1 a; +tf_2_struct_5 b; +tf_2_struct_1 tf_2_struct_3::member_3_0; +unsigned tf_2_struct_4::member_4_0; +void tf_2_init() { + a.member_1_1 = tf_2_struct_obj_2.member_6_2.member_5_2.member_1_1 = 5; +} +void tf_2_foo() { + int c = tf_2_struct_obj_2.member_6_2.member_5_4.member_4_1.member_2_0 - + -~tf_2_struct_obj_2.member_6_4 * char(90284000534361); + tf_2_struct_obj_8.member_3_0.member_1_0 = + tf_2_var_24 > + tf_2_var_21 * a.member_1_0 * tf_2_var_2 - tf_2_var_5 % a.member_1_1; + if ((~(tf_2_var_31 * tf_2_var_6) && + -~tf_2_struct_obj_2.member_6_4 * 90284000534361) % + ~tf_2_var_31 * tf_2_var_6) + b.member_5_2.member_1_0 << tf_2_var_16 << tf_2_var_1; + tf_2_var_233 = -~tf_2_struct_obj_2.member_6_4 * char(90284000534361); + int d(tf_2_struct_obj_2.member_6_4); + if (b.member_5_2.member_1_0) + b.member_5_2.member_1_1 = c; + bool e(~-~tf_2_struct_obj_2.member_6_4); + a.member_1_1 % e; + if (tf_2_var_5 / tf_2_struct_obj_2.member_6_2.member_5_2.member_1_1) + b.member_5_4.member_4_0 = tf_2_var_21 * a.member_1_0 * tf_2_var_2; + tf_2_var_69 = tf_2_var_6; +} + +/* { dg-final { scan-rtl-dump-not "Inserting rematerialization insn" "reload" } } */ Jakub