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| author | H.J. Lu <hjl.tools@gmail.com> | 2021-05-21 11:56:55 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2021-06-17 06:33:14 -0700 |
| commit | 967b46530234b4e6ad3983057705aea6c20a03c4 (patch) | |
| tree | 87a0ce8f7eec0c4ae72c1ee49f30fe53aec84268 /gcc/targhooks.c | |
| parent | 20a2c8ace0ab56c147fd995432abd5e7cf89b0e3 (diff) | |
| download | gcc-967b46530234b4e6ad3983057705aea6c20a03c4.zip gcc-967b46530234b4e6ad3983057705aea6c20a03c4.tar.gz gcc-967b46530234b4e6ad3983057705aea6c20a03c4.tar.bz2 | |
Add a target calls hook: TARGET_PUSH_ARGUMENT
1. Replace PUSH_ARGS with a target calls hook, TARGET_PUSH_ARGUMENT, which
takes an integer argument. When it returns true, push instructions will
be used to pass outgoing arguments. If the argument is nonzero, it is
the number of bytes to push and indicates the PUSH instruction usage is
optional so that the backend can decide if PUSH instructions should be
generated. Otherwise, the argument is zero.
2. Implement x86 target hook which returns false when the number of bytes
to push is no less than 16 (8 for 32-bit targets) if vector load and store
can be used.
3. Remove target PUSH_ARGS definitions which return 0 as it is the same
as the default.
4. Define TARGET_PUSH_ARGUMENT of cr16 and m32c to always return true.
gcc/
PR target/100704
* calls.c (expand_call): Replace PUSH_ARGS with
targetm.calls.push_argument (0).
(emit_library_call_value_1): Likewise.
* defaults.h (PUSH_ARGS): Removed.
(PUSH_ARGS_REVERSED): Replace PUSH_ARGS with
targetm.calls.push_argument (0).
* expr.c (block_move_libcall_safe_for_call_parm): Likewise.
(emit_push_insn): Pass the number bytes to push to
targetm.calls.push_argument and pass 0 if ARGS_ADDR is 0.
* hooks.c (hook_bool_uint_true): New.
* hooks.h (hook_bool_uint_true): Likewise.
* rtlanal.c (nonzero_bits1): Replace PUSH_ARGS with
targetm.calls.push_argument (0).
* target.def (push_argument): Add a targetm.calls hook.
* targhooks.c (default_push_argument): New.
* targhooks.h (default_push_argument): Likewise.
* config/bpf/bpf.h (PUSH_ARGS): Removed.
* config/cr16/cr16.c (TARGET_PUSH_ARGUMENT): New.
* config/cr16/cr16.h (PUSH_ARGS): Removed.
* config/i386/i386.c (ix86_push_argument): New.
(TARGET_PUSH_ARGUMENT): Likewise.
* config/i386/i386.h (PUSH_ARGS): Removed.
* config/m32c/m32c.c (TARGET_PUSH_ARGUMENT): New.
* config/m32c/m32c.h (PUSH_ARGS): Removed.
* config/nios2/nios2.h (PUSH_ARGS): Likewise.
* config/pru/pru.h (PUSH_ARGS): Likewise.
* doc/tm.texi.in: Remove PUSH_ARGS documentation. Add
TARGET_PUSH_ARGUMENT hook.
* doc/tm.texi: Regenerated.
gcc/testsuite/
PR target/100704
* gcc.target/i386/pr100704-1.c: New test.
* gcc.target/i386/pr100704-2.c: Likewise.
* gcc.target/i386/pr100704-3.c: Likewise.
Diffstat (limited to 'gcc/targhooks.c')
| -rw-r--r-- | gcc/targhooks.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/gcc/targhooks.c b/gcc/targhooks.c index 08f676b..44a1fac 100644 --- a/gcc/targhooks.c +++ b/gcc/targhooks.c @@ -770,6 +770,18 @@ hook_void_CUMULATIVE_ARGS_tree (cumulative_args_t ca ATTRIBUTE_UNUSED, { } +/* Default implementation of TARGET_PUSH_ARGUMENT. */ + +bool +default_push_argument (unsigned int) +{ +#ifdef PUSH_ROUNDING + return !ACCUMULATE_OUTGOING_ARGS; +#else + return false; +#endif +} + void default_function_arg_advance (cumulative_args_t, const function_arg_info &) { |