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| author |   Sam James <sam@gentoo.org> | 2023-04-28 00:38:41 +0100 |
|---|---|---|
| committer | Sam James <sam@gentoo.org> | 2023-04-28 00:54:13 +0100 |
| commit | b8eab6cef231c608a4857db592b347cd6f4b0cae (patch) | |
| tree | 06df32afcf73a283ebb0b4706e96093b67dbfc8e /11.4.0 | |
| parent | 13.2.0: drop upstream patches (diff) | |
| download | gcc-patches-b8eab6cef231c608a4857db592b347cd6f4b0cae.tar.gz gcc-patches-b8eab6cef231c608a4857db592b347cd6f4b0cae.tar.bz2 gcc-patches-b8eab6cef231c608a4857db592b347cd6f4b0cae.zip | |
11.4.0: add miscompilation patch (77_all_all_PR109585_13_rtl-alias-analysis-typo)
Signed-off-by: Sam James <sam@gentoo.org>
Diffstat (limited to '11.4.0')
| -rw-r--r-- | 11.4.0/gentoo/77_all_all_PR109585_13_rtl-alias-analysis-typo.patch | 79 | ||||
| -rw-r--r-- | 11.4.0/gentoo/README.history | 9 |
2 files changed, 85 insertions, 3 deletions
diff --git a/11.4.0/gentoo/77_all_all_PR109585_13_rtl-alias-analysis-typo.patch b/11.4.0/gentoo/77_all_all_PR109585_13_rtl-alias-analysis-typo.patch new file mode 100644 index 0000000..b7b57d6 --- /dev/null +++ b/11.4.0/gentoo/77_all_all_PR109585_13_rtl-alias-analysis-typo.patch @@ -0,0 +1,79 @@ +https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109609 +https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git;h=ef6051b36241bf130bf76af0b775248635dc616e + +From ef6051b36241bf130bf76af0b775248635dc616e Mon Sep 17 00:00:00 2001 +From: Richard Biener <rguenther@suse.de> +Date: Mon, 24 Apr 2023 13:31:07 +0200 +Subject: [PATCH] rtl-optimization/109585 - alias analysis typo + +When r10-514-gc6b84edb6110dd2b4fb improved access path analysis +it introduced a typo that triggers when there's an access to a +trailing array in the first access path leading to false +disambiguation. + + PR rtl-optimization/109585 + * tree-ssa-alias.c (aliasing_component_refs_p): Fix typo. + + * gcc.dg/torture/pr109585.c: New testcase. + +(cherry picked from commit 6d4bd27a60447c7505cb4783e675e98a191a8904) +--- + gcc/testsuite/gcc.dg/torture/pr109585.c | 33 +++++++++++++++++++++++++ + gcc/tree-ssa-alias.c | 2 +- + 2 files changed, 34 insertions(+), 1 deletion(-) + create mode 100644 gcc/testsuite/gcc.dg/torture/pr109585.c + +diff --git a/gcc/testsuite/gcc.dg/torture/pr109585.c b/gcc/testsuite/gcc.dg/torture/pr109585.c +new file mode 100644 +index 00000000000..f92de7c1f2e +--- /dev/null ++++ b/gcc/testsuite/gcc.dg/torture/pr109585.c +@@ -0,0 +1,33 @@ ++/* { dg-do run } */ ++ ++#include <stdlib.h> ++ ++struct P { ++ long v; ++ struct P *n; ++}; ++ ++struct F { ++ long x; ++ struct P fam[]; ++}; ++ ++int __attribute__((noipa)) ++f(struct F *f, int i) ++{ ++ struct P *p = f->fam; ++ asm("" : "+r"(f): "r"(p)); ++ p->v = 0; ++ p->n = 0; ++ return f->fam->n != 0; ++} ++ ++int ++main() ++{ ++ struct F *m = malloc (sizeof (long) + 2 * sizeof (struct P)); ++ m->fam[0].n = &m->fam[1]; ++ if (f (m, 0)) ++ abort (); ++ return 0; ++} +diff --git a/gcc/tree-ssa-alias.c b/gcc/tree-ssa-alias.c +index b1e7a2d5afc..be7b597266f 100644 +--- a/gcc/tree-ssa-alias.c ++++ b/gcc/tree-ssa-alias.c +@@ -1326,7 +1326,7 @@ aliasing_component_refs_p (tree ref1, + /* If we didn't find a common base, try the other way around. */ + if (cmp_outer <= 0 + || (end_struct_ref1 +- && compare_type_sizes (TREE_TYPE (end_struct_ref1), type1) <= 0)) ++ && compare_type_sizes (TREE_TYPE (end_struct_ref1), type2) <= 0)) + { + int res = aliasing_component_refs_walk (ref2, type2, base2, + offset2, max_size2, +-- +2.31.1 diff --git a/11.4.0/gentoo/README.history b/11.4.0/gentoo/README.history index 5c06066..a5fca96 100644 --- a/11.4.0/gentoo/README.history +++ b/11.4.0/gentoo/README.history @@ -1,11 +1,14 @@ -8 28 Jan 2022 +9 28 Apr 2023 + + 77_all_all_PR109585_13_rtl-alias-analysis-typo.patch + +8 28 Jan 2023 - 77_all_driver_environ_putenv_PR106624.patch -7 23 Jan 2022 +7 23 Jan 2023 - 26_all_enable-cet.patch + 77_all_driver_environ_putenv_PR106624.patch -6 7 Jan 2022 +6 7 Jan 2023 - 77_all_configure-c89.patch 5 17 Dec 2022 |