Regressions on trunk at revision 266001 vs revision 265911

[H.J. Lu (ia32 Core i7)]

New failures:
FAIL: gcc.dg/pr79342.c (internal compiler error)
FAIL: gcc.dg/pr79342.c (test for excess errors)
FAIL: gcc.target/i386/ipa-stack-alignment.c scan-assembler sub.*%.sp

New passes:
FAIL: gcc.dg/warn-strlen-no-nul.c (internal compiler error)
FAIL: gcc.dg/warn-strlen-no-nul.c (test for excess errors)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 101)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 110)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 111)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 117)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 118)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 119)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 153)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 154)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 155)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 156)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 157)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 158)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 46)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 71)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 72)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 73)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 74)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 75)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 76)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 92)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 96)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 99)
FAIL: gfortran.dg/bessel_6.f90   -O0  execution test
FAIL: gfortran.dg/bessel_6.f90   -O1  execution test
FAIL: gfortran.dg/bessel_6.f90   -O2  execution test
FAIL: gfortran.dg/bessel_6.f90   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/bessel_6.f90   -O3 -g  execution test
FAIL: gfortran.dg/bessel_6.f90   -Os  execution test