As discussed on IRC, this makes the aarch64 ldp/stp pass off by default. This
should stabilize the trunk and give some time to address the P1 regressions.
gcc/ChangeLog:
* config/aarch64/aarch64.opt (-mearly-ldp-fusion): Set default
to 0.
(-mlate-ldp-fusion): Likewise.
Generate code to track when the CPU might be speculating incorrectly.
mearly-ldp-fusion
-Target Var(flag_aarch64_early_ldp_fusion) Optimization Init(1)
+Target Var(flag_aarch64_early_ldp_fusion) Optimization Init(0)
Enable the copy of the AArch64 load/store pair fusion pass that runs before
register allocation.
mlate-ldp-fusion
-Target Var(flag_aarch64_late_ldp_fusion) Optimization Init(1)
+Target Var(flag_aarch64_late_ldp_fusion) Optimization Init(0)
Enable the copy of the AArch64 load/store pair fusion pass that runs after
register allocation.