From 085efec58f7088152576e386cc8ddeb9f5ff5068 Mon Sep 17 00:00:00 2001 From: Iain Sandoe Date: Thu, 27 Jun 2019 18:56:53 +0000 Subject: [PATCH] [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 * config/rs6000/rs6000.c (darwin_rs6000_override_options): Do not use longcall for 64b code. From-SVN: r272758 --- gcc/ChangeLog | 5 +++++ gcc/config/rs6000/rs6000.c | 9 +++++++++ 2 files changed, 14 insertions(+) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b548ac3d6ca..7e6396c2eb0 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2019-06-27 Iain Sandoe + + * config/rs6000/rs6000.c (darwin_rs6000_override_options): Do not + use longcall for 64b code. + 2019-06-27 Aaron Sawdey * builtins.c (get_memory_rtx): Fix comment. diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index 3b59db5cf2c..fbff6bdb0a5 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; -- 2.30.2