OK, I haven't asked a dumb question for a while so here goes! I'm trying to debug my optimization in lto running 505mcf_r (yes it's SPEC17.)
Here's the bit that fails from the make.out: /home/gary/gcc_build_gcc11/install/libexec/gcc/x86_64-pc-linux-gnu/11.1.1/lto1 -quiet -dumpdir ./mcf_r.lto.o- -dumpbase mcf_r.lto.o -dumpbase-ext .o -m64 -mtune=generic -march=x86-64 -O3 -O3 -Wdfa -version -fno-openmp -fno-openacc -fno-pie -fcf-protection=none -fcommon -fdump-ipa-type-escape-analysis -fdump-ipa-field-reorder -funroll-loops -flto-partition=none -fipa-instance-interleave -fdump-ipa-all-details -fno-ipa-icf -fipa-type-escape-analysis -fipa-field-reorder -fresolution=mcf_r.res -flinker-output=exec --param=early-inlining-insns=96 --param=max-inline-insns-auto=64 --param=inline-unit-growth=96 @./mcf_r.lto.o-args.0 -o ./mcf_r.lto.o-mcf_r.lto.s I bring up emacs and go into gdb. I set it to debug the lto1 path above. I cd to the build area: cd gary@SCC-PC0TYGP5:~/spec/cpu2017/benchspec/CPU/525.x264_r/build/build_base_gcc11_rate_ampere-64.0000 I set my beakpoint: break tree-ssa-sccvn.c:5975 I give the breakpoint a condition (yes I instrumented the code just to do this): cond 1 (count == 5326) Finally, I run lto1 with the long list of arguments above. It runs a tiny bit and gives me: lto1: fatal error: could not open symbol resolution file: No such file or directory This is a new one for me guys and I've used this approach above many times (but not on a SPEC build.) Any hints at what I did wrong? Note, during development I always build gcc with "-O0 -g". Thanks, Gary CONFIDENTIALITY NOTICE: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and contains information that is confidential and proprietary to Ampere Computing or its subsidiaries. It is to be used solely for the purpose of furthering the parties' business relationship. Any unauthorized review, copying, or distribution of this email (or any attachments thereto) is strictly prohibited. If you are not the intended recipient, please contact the sender immediately and permanently delete the original and any copies of this email and any attachments thereto.
