Regressions on trunk at revision 263080 vs revision 263062

[H.J. Lu]

New failures:
FAIL: gcc.dg/torture/vec-cvt-1.c   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (internal compiler error)
FAIL: gcc.dg/torture/vec-cvt-1.c   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (test for excess errors)
FAIL: gcc.target/i386/avx-cvt-2.c scan-assembler vcvtps2pd[^\n\r]*(%xmm[^\n\r]*%ymm|ymm[^\n\r]*xmm)
FAIL: gcc.target/i386/avx-cvt-2.c scan-assembler vcvtps2pd[^\n\r]*(%xmm[^\n\r]*%ymm|ymm[^\n\r]*xmm)

New passes: