[Bug target/51784] PIC register not correctly preserved in nested funcs / with non-local goto

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51784

--- Comment #37 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2012-01-19 11:03:58 UTC ---
Regstrapped with the patch in comment #35. The patch fixes this PR without
regression (down to 2 failures with some pending patches) and the tests for
pr10901 pass with the different options I have tried. Thanks.