Regressions on trunk at revision 224722 vs revision 224718

[Intel Automatic Testing System [ia32 Core AVX2]]

New failures:

New passes:
FAIL: gcc.dg/guality/pr43177.c   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  line 24 l == 10
FAIL: gcc.dg/guality/pr43177.c   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  line 24 x == 7
FAIL: gcc.dg/guality/sra-1.c   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  line 32 a[0] == 4
FAIL: g++.dg/ipa/ipa-icf-4.C  -std=gnu++11  scan-ipa-dump icf "Equal symbols: [67]"
FAIL: g++.dg/ipa/ipa-icf-4.C  -std=gnu++14  scan-ipa-dump icf "Equal symbols: [67]"
FAIL: g++.dg/ipa/ipa-icf-4.C  -std=gnu++98  scan-ipa-dump icf "Equal symbols: [67]"