With a large function, the 'b' branch may not be able to reach its
target without a long branch stub. Gas doesn't provide
a long branch stub for a branch without a link register (i.e., it
considers branches with link registers calls). This patch
changes pa_asm_output_mi_thunk() to use a bl branch so the linker will
provide a long branch stub if needed.
Tested on hppa-unknown-linux-gnu, hppa2.0w-hp-hpux11.11 and hppa64-hp-
hpux11.11 with no observed regressions.
Committed to trunk, 4.9 and 4.8.
Dave
--
John David Anglin dave.ang...@bell.net
2014-08-11 John Dave Anglin <dang...@gcc.gnu.org>
PR target/62038
* config/pa/pa.c (pa_asm_output_mi_thunk): Use a branch with %r31 link
register.
Index: config/pa/pa.c
===================================================================
--- config/pa/pa.c (revision 213683)
+++ config/pa/pa.c (working copy)
@@ -8285,7 +8287,9 @@
if (!val_14)
output_asm_insn ("addil L'%2,%%r26", xoperands);
- output_asm_insn ("b %0", xoperands);
+ /* An absolute branch without a link register is not considered
+ a call by GAS. We need a call to get a stub if necessary. */
+ output_asm_insn ("bl %0,%%r31", xoperands);
if (val_14)
{
