Hi, On Sat, 2025-06-07 at 13:32 +0200, John Paul Adrian Glaubitz wrote: > The gcc maintainer will certainly know better whether all of these are > needed to fix the build and consequently avoid other packages from being > miscompiled or failing to build.
I was not able to tune gcc-14 properly using CFLAGS to apply this workaround when using gcc-13 as the bootstrap compiler but the attached patch worked for me which of course can't be used in the actual package. It should be possible to add -fno-fold-mem-offsets to DRIVER_SELF_SPECS on m68k. However, I currently don't understand how the syntax works. I'll ask the Gentoo people who have done this. Adrian -- .''`. John Paul Adrian Glaubitz : :' : Debian Developer `. `' Physicist `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
From 6a616afb8dadcd33506001914f5ca6fa37749b6b Mon Sep 17 00:00:00 2001 From: John Paul Adrian Glaubitz <[email protected]> Date: Sun, 8 Jun 2025 07:59:26 +0200 Subject: [PATCH] Disable fold-mem-offsets --- gcc/common.opt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/gcc/common.opt b/gcc/common.opt index 0e50305dde8..e57dff18af7 100644 --- a/src/gcc/common.opt +++ b/src/gcc/common.opt @@ -1295,7 +1295,7 @@ Common Var(flag_cprop_registers) Optimization Perform a register copy-propagation optimization pass. ffold-mem-offsets -Common Var(flag_fold_mem_offsets) Init(1) Optimization +Common Var(flag_fold_mem_offsets) Init(0) Optimization Fold instructions calculating memory offsets to the memory access instruction if possible. fcrossjumping -- 2.49.0
