[Bug middle-end/106892] [11/12 Regression] Wrong code at -O3 on x86_64-linux-gnu since r11-963-g80d6f89e78fc3b77
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106892 --- Comment #14 from CVS Commits --- The releases/gcc-12 branch has been updated by Richard Biener : https://gcc.gnu.org/g:2b9e1f7ff476059724cca4b11d39972655d4468f commit r12-8819-g2b9e1f7ff476059724cca4b11d39972655d4468f Author: Richard Biener Date: Fri Sep 9 12:06:38 2022 +0200 tree-optimization/106892 - avoid invalid pointer association in predcom When predictive commoning builds a reference for iteration N it prematurely associates a constant offset into the MEM_REF offset operand which can be invalid if the base pointer then points outside of an object which alias-analysis does not consider valid. PR tree-optimization/106892 * tree-predcom.cc (ref_at_iteration): Do not associate the constant part of the offset into the MEM_REF offset operand, across a non-zero offset. * gcc.dg/torture/pr106892.c: New testcase. (cherry picked from commit a8b0b13da7379feb31950a9d2ad74b98a29c547f)
[Bug middle-end/106892] [11/12 Regression] Wrong code at -O3 on x86_64-linux-gnu since r11-963-g80d6f89e78fc3b77
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106892 --- Comment #13 from Martin Liška --- > Shouldn't that be 106892? Right, I at least fixed ChangeLog entry in g:3fa66b95570a125fd35d5721c9eb08d975f73e82.
[Bug middle-end/106892] [11/12 Regression] Wrong code at -O3 on x86_64-linux-gnu since r11-963-g80d6f89e78fc3b77
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106892 Mikael Pettersson changed: What|Removed |Added CC||mikpelinux at gmail dot com --- Comment #12 from Mikael Pettersson --- (In reply to Richard Biener from comment #11) > PR tree-optimization/106722 Shouldn't that be 106892? > * tree-predcom.cc (ref_at_iteration): Do not associate the > constant part of the offset into the MEM_REF offset > operand, across a non-zero offset. > > * gcc.dg/torture/pr106892.c: New testcase.
