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| author | Iain Sandoe <iain@sandoe.co.uk> | 2019-06-27 18:56:53 +0000 |
|---|---|---|
| committer | Iain Sandoe <iains@gcc.gnu.org> | 2019-06-27 18:56:53 +0000 |
| commit | 085efec58f7088152576e386cc8ddeb9f5ff5068 (patch) | |
| tree | 132890d90f323a0a5df1e20ccd4d1bc4c46125ab | |
| parent | c2fe65930a4b48017042e49516eb338c9e241e53 (diff) | |
| download | gcc-085efec58f7088152576e386cc8ddeb9f5ff5068.zip gcc-085efec58f7088152576e386cc8ddeb9f5ff5068.tar.gz gcc-085efec58f7088152576e386cc8ddeb9f5ff5068.tar.bz2 | |
[Darwin, PPC] Do not use longcall for 64b code.
The linker [ld64] that supports 64Bit does not need the JBSR longcall
optimisation, and will not work with the most generic case (where the
symbol is undefined external, but there is no symbl stub). So switch
the longcall option off. ld64 will generate branch islands as needed.
2019-06-27 Iain Sandoe <iain@sandoe.co.uk>
* config/rs6000/rs6000.c (darwin_rs6000_override_options): Do not
use longcall for 64b code.
From-SVN: r272758
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/rs6000/rs6000.c | 9 |
2 files changed, 14 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b548ac3..7e6396c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2019-06-27 Iain Sandoe <iain@sandoe.co.uk> + + * config/rs6000/rs6000.c (darwin_rs6000_override_options): Do not + use longcall for 64b code. + 2019-06-27 Aaron Sawdey <acsawdey@linux.ibm.com> * builtins.c (get_memory_rtx): Fix comment. diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index 3b59db5..fbff6bd 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -3418,6 +3418,15 @@ darwin_rs6000_override_options (void) rs6000_isa_flags |= OPTION_MASK_POWERPC64; warning (0, "%qs requires PowerPC64 architecture, enabling", "-m64"); } + + /* The linkers [ld64] that support 64Bit do not need the JBSR longcall + optimisation, and will not work with the most generic case (where the + symbol is undefined external, but there is no symbl stub). */ + if (TARGET_64BIT) + rs6000_default_long_calls = 0; + + /* ld_classic is (so far) still used for kernel (static) code, and supports + the JBSR longcall / branch islands. */ if (flag_mkernel) { rs6000_default_long_calls = 1; |