[Bug testsuite/85106] Add scan-ltrans-tree-dump and scan-wpa-ipa-dump

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85106

--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> ---
Created attachment 43782
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43782&action=edit
Tentative patch that adds scan-wpa-ipa-dump

Test results look like this (note the scan-wpa-ipa-dump):
...
Test Run By vries on Wed Mar 28 11:02:22 2018
Native configuration is x86_64-pc-linux-gnu

                === gcc tests ===

Schedule of variations:
    unix

Running target unix
Running gcc/testsuite/gcc.dg/ipa/ipa.exp ...
PASS: gcc.dg/ipa/ipa-icf-38.c (test for excess errors)
PASS: gcc.dg/ipa/ipa-icf-38.c scan-wpa-ipa-dump icf "Semantic equality
hit:foo->bar"
PASS: gcc.dg/ipa/ipa-icf-38.c scan-wpa-ipa-dump icf "Equal symbols: 1"

                === gcc Summary ===

# of expected passes            3
build/gcc/xgcc  version 8.0.1 20180321 (experimental) (GCC) 
...