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pa.c (pa_callee_copies): New function.

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* config/pa/pa.c (pa_callee_copies): New function.
	* config/pa/pa.opt (mcaller-copies): New option.
	* doc/invoke.texi (mcaller-copies): Document option.

From-SVN: r243531
This commit is contained in:
John David Anglin 2016-12-11 19:08:47 +00:00
parent 8c7cc1a98f
commit 84c9e5ff79
4 changed files with 37 additions and 2 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2012-12-11 John David Anglin <danglin@gcc.gnu.org>
* config/pa/pa.c (pa_callee_copies): New function.
* config/pa/pa.opt (mcaller-copies): New option.
* doc/invoke.texi (mcaller-copies): Document option.
2016-12-11 Uros Bizjak <ubizjak@gmail.com>
PR target/70799

19
gcc/config/pa/pa.c
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@ -195,6 +195,8 @@ static bool pa_cannot_force_const_mem (machine_mode, rtx);
static bool pa_legitimate_constant_p (machine_mode, rtx);
static unsigned int pa_section_type_flags (tree, const char *, int);
static bool pa_legitimate_address_p (machine_mode, rtx, bool);
static bool pa_callee_copies (cumulative_args_t, machine_mode,
const_tree, bool);
/* The following extra sections are only used for SOM. */
static GTY(()) section *som_readonly_data_section;
@ -343,7 +345,7 @@ static size_t n_deferred_plabels = 0;
#undef TARGET_PASS_BY_REFERENCE
#define TARGET_PASS_BY_REFERENCE pa_pass_by_reference
#undef TARGET_CALLEE_COPIES
#define TARGET_CALLEE_COPIES hook_bool_CUMULATIVE_ARGS_mode_tree_bool_true
#define TARGET_CALLEE_COPIES pa_callee_copies
#undef TARGET_ARG_PARTIAL_BYTES
#define TARGET_ARG_PARTIAL_BYTES pa_arg_partial_bytes
#undef TARGET_FUNCTION_ARG
@ -10720,4 +10722,19 @@ pa_maybe_emit_compare_and_swap_exchange_loop (rtx target, rtx mem, rtx val)
return NULL_RTX;
}
/* Implement TARGET_CALLEE_COPIES. The callee is responsible for copying
arguments passed by hidden reference in the 32-bit HP runtime. Users
can override this behavior for better compatibility with openmp at the
risk of library incompatibilities. Arguments are always passed by value
in the 64-bit HP runtime. */
static bool
pa_callee_copies (cumulative_args_t cum ATTRIBUTE_UNUSED,
machine_mode mode ATTRIBUTE_UNUSED,
const_tree type ATTRIBUTE_UNUSED,
bool named ATTRIBUTE_UNUSED)
{
return !TARGET_CALLER_COPIES;
}
#include "gt-pa.h"

4
gcc/config/pa/pa.opt
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@ -41,6 +41,10 @@ mbig-switch
Target Ignore
Does nothing. Preserved for backward compatibility.
mcaller-copies
Target Report Mask(CALLER_COPIES)
Caller copies function arguments passed by hidden reference.
mdisable-fpregs
Target Report Mask(DISABLE_FPREGS)
Disable FP regs.

10
gcc/doc/invoke.texi
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@ -763,7 +763,7 @@ Objective-C and Objective-C++ Dialects}.
@emph{HPPA Options}
@gccoptlist{-march=@var{architecture-type} @gol
-mdisable-fpregs -mdisable-indexing @gol
-mcaller-copies -mdisable-fpregs -mdisable-indexing @gol
-mfast-indirect-calls -mgas -mgnu-ld -mhp-ld @gol
-mfixed-range=@var{register-range} @gol
-mjump-in-delay -mlinker-opt -mlong-calls @gol
@ -17465,6 +17465,14 @@ other way around.
@opindex mpa-risc-2-0
Synonyms for @option{-march=1.0}, @option{-march=1.1}, and @option{-march=2.0} respectively.
@item -mcaller-copies
@opindex mcaller-copies
The caller copies function arguments passed by hidden reference. This
option should be used with care as it is not compatible with the default
32-bit runtime. However, only aggregates larger than eight bytes are
passed by hidden reference and the option provides better compatibility
with openmp.
@item -mjump-in-delay
@opindex mjump-in-delay
This option is ignored and provided for compatibility purposes only.