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| author | Richard Sandiford <richard.sandiford@arm.com> | 2019-09-30 16:19:43 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2019-09-30 16:19:43 +0000 |
| commit | 002ffd3caa684c3eb30f8f53206439b7aa34b370 (patch) | |
| tree | bc1fb384d8c3f5469131ebbe8416b7880c2fc784 /gcc/doc | |
| parent | bd785b44932274f7067105de417938597289962c (diff) | |
| download | gcc-002ffd3caa684c3eb30f8f53206439b7aa34b370.zip gcc-002ffd3caa684c3eb30f8f53206439b7aa34b370.tar.gz gcc-002ffd3caa684c3eb30f8f53206439b7aa34b370.tar.bz2 | |
Add a target hook for getting an ABI from a function type
This patch adds a target hook that allows targets to return
the ABI associated with a particular function type. Generally,
when multiple ABIs are in use, it must be possible to tell from
a function type and its attributes which ABI it is using.
2019-09-30 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* target.def (fntype_abi): New target hook.
* doc/tm.texi.in (TARGET_FNTYPE_ABI): Likewise.
* doc/tm.texi: Regenerate.
* target.h (predefined_function_abi): Declare.
* function-abi.cc (fntype_abi): Call targetm.calls.fntype_abi,
if defined.
* config/aarch64/aarch64.h (ARM_PCS_SIMD): New arm_pcs value.
* config/aarch64/aarch64.c: Include function-abi.h.
(aarch64_simd_abi, aarch64_fntype_abi): New functions.
(TARGET_FNTYPE_ABI): Define.
From-SVN: r276308
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/tm.texi | 10 | ||||
| -rw-r--r-- | gcc/doc/tm.texi.in | 5 |
2 files changed, 15 insertions, 0 deletions
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi index a86c210..0f79d38 100644 --- a/gcc/doc/tm.texi +++ b/gcc/doc/tm.texi @@ -1898,6 +1898,16 @@ must be defined. Modern ports should define @code{CALL_REALLY_USED_REGISTERS}. @cindex call-used register @cindex call-clobbered register @cindex call-saved register +@deftypefn {Target Hook} {const predefined_function_abi &} TARGET_FNTYPE_ABI (const_tree @var{type}) +Return the ABI used by a function with type @var{type}; see the +definition of @code{predefined_function_abi} for details of the ABI +descriptor. Targets only need to define this hook if they support +interoperability between several ABIs in the same translation unit. +@end deftypefn + +@cindex call-used register +@cindex call-clobbered register +@cindex call-saved register @deftypefn {Target Hook} bool TARGET_HARD_REGNO_CALL_PART_CLOBBERED (rtx_insn *@var{insn}, unsigned int @var{regno}, machine_mode @var{mode}) This hook should return true if @var{regno} is partly call-saved and partly call-clobbered, and if a value of mode @var{mode} would be partly diff --git a/gcc/doc/tm.texi.in b/gcc/doc/tm.texi.in index 06dfcda..ed605c0 100644 --- a/gcc/doc/tm.texi.in +++ b/gcc/doc/tm.texi.in @@ -1709,6 +1709,11 @@ must be defined. Modern ports should define @code{CALL_REALLY_USED_REGISTERS}. @cindex call-used register @cindex call-clobbered register @cindex call-saved register +@hook TARGET_FNTYPE_ABI + +@cindex call-used register +@cindex call-clobbered register +@cindex call-saved register @hook TARGET_HARD_REGNO_CALL_PART_CLOBBERED @hook TARGET_REMOVE_EXTRA_CALL_PRESERVED_REGS |