commit: a4f03b7491ffd0fdab5df8d89c96ea3ba8b17838 Author: Sam James <sam <AT> gentoo <DOT> org> AuthorDate: Mon Jan 13 03:39:58 2025 +0000 Commit: Sam James <sam <AT> gentoo <DOT> org> CommitDate: Mon Jan 13 03:39:58 2025 +0000 URL: https://gitweb.gentoo.org/proj/gcc-patches.git/commit/?id=a4f03b74
15.0.0: add ML link to ifcombine patch Signed-off-by: Sam James <sam <AT> gentoo.org> 15.0.0/gentoo/82_all_PR118409-ifcombine.patch | 24 ++++++++++++++++-------- 1 file changed, 16 insertions(+), 8 deletions(-) diff --git a/15.0.0/gentoo/82_all_PR118409-ifcombine.patch b/15.0.0/gentoo/82_all_PR118409-ifcombine.patch index e599f21..6362cd1 100644 --- a/15.0.0/gentoo/82_all_PR118409-ifcombine.patch +++ b/15.0.0/gentoo/82_all_PR118409-ifcombine.patch @@ -1,8 +1,10 @@ -https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118409#c26 - -[ifcombine] propagate signbit mask to XOR right-hand operand +https://inbox.sourceware.org/gcc-patches/ored17gz9x....@lxoliva.fsfla.org/ +From bfb791ad941348a0bb854b770f2294424528bc40 Mon Sep 17 00:00:00 2001 +Message-ID: <bfb791ad941348a0bb854b770f2294424528bc40.1736739564.git....@gentoo.org> From: Alexandre Oliva <ol...@adacore.com> +Date: Mon, 13 Jan 2025 00:37:14 -0300 +Subject: [PATCH] propagate signbit mask to XOR right-hand operand If a single-bit bitfield takes up the sign bit of a storage unit, comparing the corresponding bitfield between two objects loads the @@ -19,6 +21,7 @@ the right-hand operand when both were taken from the same XOR. This patch fixes that. +Regstrapped on x86_64-linux-gnu. Ok to install? for gcc/ChangeLog @@ -28,16 +31,16 @@ for gcc/ChangeLog for gcc/testsuite/ChangeLog - PR tree-optimization/118409 +PR tree-optimization/118409 * gcc.dg/field-merge-20.c: New. --- - gcc/gimple-fold.cc | 20 ++++++++++ - gcc/testsuite/gcc.dg/field-merge-20.c | 64 +++++++++++++++++++++++++++++++++ + gcc/gimple-fold.cc | 20 +++++++++ + gcc/testsuite/gcc.dg/field-merge-20.c | 64 +++++++++++++++++++++++++++ 2 files changed, 84 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/field-merge-20.c diff --git a/gcc/gimple-fold.cc b/gcc/gimple-fold.cc -index a3987c4590ae6..93ed8b3abb056 100644 +index a3987c4590ae..93ed8b3abb05 100644 --- a/gcc/gimple-fold.cc +++ b/gcc/gimple-fold.cc @@ -8270,6 +8270,16 @@ fold_truth_andor_for_ifcombine (enum tree_code code, tree truth_type, @@ -76,7 +79,7 @@ index a3987c4590ae6..93ed8b3abb056 100644 /* If either comparison code is not correct for our logical operation, diff --git a/gcc/testsuite/gcc.dg/field-merge-20.c b/gcc/testsuite/gcc.dg/field-merge-20.c new file mode 100644 -index 0000000000000..44ac7fae50dc5 +index 000000000000..44ac7fae50dc --- /dev/null +++ b/gcc/testsuite/gcc.dg/field-merge-20.c @@ -0,0 +1,64 @@ @@ -144,3 +147,8 @@ index 0000000000000..44ac7fae50dc5 + __builtin_abort(); + return 0; +} + +base-commit: 0e05b793fba2a9bea9f0fbb1f068679f5dadf514 +-- +2.48.0 +
