[Bug lto/93493] New: -flto -flto-partition=none -fipa-pass -fdump-ipa-pass dump_file still in /tmp

[erick.ochoa@theobroma-systems.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93493

            Bug ID: 93493
           Summary: -flto -flto-partition=none -fipa-pass -fdump-ipa-pass
                    dump_file still in /tmp
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
          Assignee: unassigned at gcc dot gnu.org
          Reporter: erick.ochoa@theobroma-systems.com
                CC: marxin at gcc dot gnu.org
  Target Milestone: ---

Created attachment 47728
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47728&action=edit
Hello world IPA pass

Hello,

I am working on an optimization and using -fdump-ipa-$pass for debugging
purposes.
I was initially compiling some test programs in the following way:

```
/path/to/gcc -flto -fipa-hello-world -fdump-ipa-hello-world a.c
```

And a `cc*.074i.hello-world` with the debug information was always available in
my current working directory after compiling

However, recently, I've needed change my compilation scripts by adding
`-flto-partition=none`. Compiling in the following way:

```
/path/to/gcc -flto -flto-partition=none -fipa-hello-world
-fdump-ipa-hello-world a.c
```

Produces no `cc*.074i.hello-world` file in my current working directory.
However, I do see it in the /tmp/ folder.
I attach a "hello world pass" patch to replicate this issue via the commands
given in this ticket.
I have rebased the patch against the following commit:

commit f214ffb336d582a66149068a2a96b7fcf395b5de (HEAD -> gcc-bug-0,
upstream/master, gcc-master)
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Wed Jan 29 13:56:49 2020 +0000