On Thu, 5 May 2022, Alexandre Oliva via Gcc-patches wrote: > [PR100106] Reject unaligned subregs when strict alignment is required > > From: Alexandre Oliva <ol...@adacore.com> > > The testcase for pr100106, compiled with optimization for 32-bit > powerpc -mcpu=604 with -mstrict-align expands the initialization of a > union from a float _Complex value into a load from an SCmode > constant pool entry, aligned to 4 bytes, into a DImode pseudo, > requiring 8-byte alignment.
This has regressed building the `alpha-linux-gnu' target, in libada, as from commit d6b756447cd5 including GCC 14 and up to current GCC 15 trunk: during RTL pass: ira +===========================GNAT BUG DETECTED==============================+ | 15.0.0 20240610 (experimental) (alpha-linux-gnu) GCC error: | | in gen_rtx_SUBREG, at emit-rtl.cc:1032 | | Error detected around g-debpoo.adb:1896:8 | | Compiling g-debpoo.adb | | Please submit a bug report; see https://gcc.gnu.org/bugs/ . | | Use a subject line meaningful to you and us to track the bug. | | Include the entire contents of this bug box in the report. | | Include the exact command that you entered. | | Also include sources listed below. | +==========================================================================+ I have filed PR #115459. Maciej
