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| author |   Sergei Trofimovich <slyfox@gentoo.org> | 2020-11-08 11:44:36 +0000 |
|---|---|---|
| committer | Sergei Trofimovich <slyfox@gentoo.org> | 2020-11-08 11:44:36 +0000 |
| commit | 28c80aeb200a8269ab50dfd079e5a0999a84a403 (patch) | |
| tree | 1604b5b3f5bd863309d93c2cb99bb9ed9012d5ae | |
| parent | 10.2.0: cut 4 patchset (diff) | |
| download | gcc-patches-28c80aeb200a8269ab50dfd079e5a0999a84a403.tar.gz gcc-patches-28c80aeb200a8269ab50dfd079e5a0999a84a403.tar.bz2 gcc-patches-28c80aeb200a8269ab50dfd079e5a0999a84a403.zip | |
8.4.0: backport assume_aligned fix (PR94163)
Reported-by: Ervin Peters
Bug: https://bugs.gentoo.org/750905
Bug: https://gcc.gnu.org/PR94163
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
| -rw-r--r-- | 8.4.0/gentoo/32_all_assume-aligned.patch | 31 | ||||
| -rw-r--r-- | 8.4.0/gentoo/README.history | 7 |
2 files changed, 35 insertions, 3 deletions
diff --git a/8.4.0/gentoo/32_all_assume-aligned.patch b/8.4.0/gentoo/32_all_assume-aligned.patch new file mode 100644 index 0000000..10dffbb --- /dev/null +++ b/8.4.0/gentoo/32_all_assume-aligned.patch @@ -0,0 +1,31 @@ +https://bugs.gentoo.org/750905 +https://gcc.gnu.org/PR94163 + +From db3584552871c8caccdc22e97ea1573da9458253 Mon Sep 17 00:00:00 2001 +From: Richard Biener <rguenther@suse.de> +Date: Fri, 13 Mar 2020 13:56:26 +0100 +Subject: [PATCH] tree-optimization/94163 constrain alignment set by PRE + +This avoids HWI -> unsigned truncation to end up with zero alignment +which set_ptr_info_alignment ICEs on. + +2020-03-13 Richard Biener <rguenther@suse.de> + + PR tree-optimization/94163 + * tree-ssa-pre.c (create_expression_by_pieces): Check + whether alignment would be zero. +--- a/gcc/tree-ssa-pre.c ++++ b/gcc/tree-ssa-pre.c +@@ -2810,7 +2810,8 @@ create_expression_by_pieces (basic_block block, pre_expr expr, + unsigned HOST_WIDE_INT hmisalign + = args.length () == 3 ? tree_to_uhwi (args[2]) : 0; + if ((halign & (halign - 1)) == 0 +- && (hmisalign & ~(halign - 1)) == 0) ++ && (hmisalign & ~(halign - 1)) == 0 ++ && (unsigned int)halign != 0) + set_ptr_info_alignment (get_ptr_info (forcedname), + halign, hmisalign); + } +-- +2.29.2 + diff --git a/8.4.0/gentoo/README.history b/8.4.0/gentoo/README.history index e072ed5..a4cf80f 100644 --- a/8.4.0/gentoo/README.history +++ b/8.4.0/gentoo/README.history @@ -1,12 +1,13 @@ -3 TODO +3 TODO + 31_all_plugin-objdump.patch U 11_all_extra-options.patch + + 32_all_assume-aligned.patch -2 29 May 2020 +2 29 May 2020 + 29_all_libcpp-ar.patch + 30_all_alignof-failure-PR90736.patch -1 03 Mar 2020 +1 03 Mar 2020 + 01_all_default-fortify-source.patch + 02_all_default-warn-format-security.patch + 03_all_default-warn-trampolines.patch |