Regressions on trunk at revision 202125 vs revision 202100

[H.J. Lu x32]

New failures:
FAIL: gcc.dg/attr-ifunc-4.c execution test
FAIL: gcc.dg/lto/20090218-1 c_lto_20090218-1_0.o-c_lto_20090218-1_1.o link, -O0 -flto -flto-partition=1to1 -fno-use-linker-plugin 
FAIL: gcc.dg/lto/20090218-1 c_lto_20090218-1_0.o-c_lto_20090218-1_1.o link, -O0 -flto -flto-partition=none -fuse-linker-plugin
FAIL: gcc.dg/lto/20090218-1 c_lto_20090218-1_0.o-c_lto_20090218-1_1.o link, -O0 -flto -fuse-linker-plugin -fno-fat-lto-objects 

New passes:
FAIL: gcc.dg/inline-dump.c  (test for warnings, line 10)
FAIL: gcc.dg/tree-ssa/attr-alias.c scan-tree-dump-times optimized "  test4 " 1