Regressions on trunk (power7) at revision 234994 vs revision 234978 on yavin3.rch.stglabs.ibm.com

[Bill Seurer on yavin3 (POWER7)]

New failures:
FAIL: StackTrace2 -O3 output - source compiled test
FAIL: StackTrace2 -findirect-dispatch output - source compiled test
FAIL: StackTrace2 output - source compiled test
FAIL: g++.dg/cpp1y/vla11.C  -std=c++11 execution test
FAIL: g++.dg/cpp1y/vla11.C  -std=c++11 execution test
FAIL: g++.dg/cpp1y/vla11.C  -std=c++14 execution test
FAIL: g++.dg/cpp1y/vla11.C  -std=c++14 execution test
FAIL: getlocalvartable output
FAIL: go.test/test/ken/cplx2.go execution,  -O2 -g 
FAIL: go.test/test/ken/cplx2.go execution,  -O2 -g 
FAIL: libgomp.c++/for-13.C execution test
FAIL: runtime
FAIL: runtime
FAIL: sync/atomic

New passes:
FAIL: gcc.target/powerpc/pr70640.c scan-assembler xxlorc
FAIL: gcc.target/powerpc/pr70640.c scan-assembler xxlorc