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[patch,target] Fix ppc-darwin issue with long double intrinsics (PR25477)
Thanks to Andrew's code, Mike's and Geoff's comments in the PR, help
from Uros, Paolo and Jack, and Dominique's machine for testing, here
is a patch for fixing this PR. It has three independent parts, joined
together because I regtested them together:
1. the target part, in gcc/config/darwin* and gcc/config/rs6000,
that takes care of setting correct assembler names for the builtins,
if needed
2. the Fortran front-end part, bordering on obvious, that makes
cpow{f,,l} builtins instead of simply considering them library
functions (otherwise, they don't benefit from the patch above)
3. the Fortran testsuite part, splitting testing of ERF/ERFC from
large_real_kind_2.F90 into its separate test case, which still fails
on Darwin at -O0 because Apple's PowerPC erfl() and ercl() are plain
useless.
The patch was bootstrapped on powerpc-apple-darwin9.2.0 with C and
Fortran, and regtested with both -m32 and -m64 for these same
languages. OK for trunk? (I need a Darwin maintainer approval for the
target stuff, and a Fortran maintainer for Fortran parts.)
FX
--
François-Xavier Coudert
http://www.homepages.ucl.ac.uk/~uccafco/
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