[patch] Fix PR middle-end/68291 & 68292

[Eric Botcazou]

> Since you committed this (r231372), I've noticed several regressions
> on ARM and AArch64.
> You can have a look at
> http://people.linaro.org/~christophe.lyon/cross-validation/gcc/trunk/231372/
> report-build-info.html for more details.

I presume it's:

Fail appears              [     => FAIL]:
  gcc.dg/pr63594-1.c (internal compiler error)
  gcc.dg/pr63594-2.c (internal compiler error)
  gcc.dg/vect/vect-singleton_1.c (internal compiler error)
  gcc.dg/vect/vect-singleton_1.c -flto -ffat-lto-objects (internal compiler 
error)
  gcc.target/aarch64/aapcs64/func-ret-1.c compilation,  -O1  (internal 
compiler error)
  gcc.target/aarch64/aapcs64/func-ret-1.c compilation,  -O2  (internal 
compiler error)
  gcc.target/aarch64/aapcs64/func-ret-1.c compilation,  -O3 -g  (internal 
compiler error)
  gcc.target/aarch64/aapcs64/func-ret-1.c compilation,  -Og -g  (internal 
compiler error)
  gcc.target/aarch64/aapcs64/func-ret-1.c compilation,  -Os  (internal 
compiler error)
  gcc.target/aarch64/pr65491_1.c (internal compiler error)

on aarch64?  Yes, I'm going to have a look.

-- 
Eric Botcazou