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| author | Hongyu Wang <hongyu.wang@intel.com> | 2023-07-14 16:33:32 +0800 |
|---|---|---|
| committer | Hongyu Wang <hongyu.wang@intel.com> | 2023-10-07 16:34:29 +0800 |
| commit | dfa15b4946d1d2678e0a3135c94173a103979f7d (patch) | |
| tree | 5992e4b776d48d92549dac78cf06d2b010a3c8db /gcc/doc/tm.texi.in | |
| parent | bc4466b94e91f4d2a051a9beba45187e7c23615c (diff) | |
| download | gcc-dfa15b4946d1d2678e0a3135c94173a103979f7d.zip gcc-dfa15b4946d1d2678e0a3135c94173a103979f7d.tar.gz gcc-dfa15b4946d1d2678e0a3135c94173a103979f7d.tar.bz2 | |
[APX EGPR] middle-end: Add index_reg_class with insn argument.
Like base_reg_class, INDEX_REG_CLASS also does not support backend insn.
Add index_reg_class with insn argument for lra/reload usage.
gcc/ChangeLog:
* addresses.h (index_reg_class): New wrapper function like
base_reg_class.
* doc/tm.texi: Document INSN_INDEX_REG_CLASS.
* doc/tm.texi.in: Ditto.
* lra-constraints.cc (index_part_to_reg): Pass index_class.
(process_address_1): Calls index_reg_class with curr_insn and
replace INDEX_REG_CLASS with its return value index_cl.
* reload.cc (find_reloads_address): Likewise.
(find_reloads_address_1): Likewise.
Co-authored-by: Kong Lingling <lingling.kong@intel.com>
Co-authored-by: Hongtao Liu <hongtao.liu@intel.com>
Diffstat (limited to 'gcc/doc/tm.texi.in')
| -rw-r--r-- | gcc/doc/tm.texi.in | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/doc/tm.texi.in b/gcc/doc/tm.texi.in index 265b94c..141027e 100644 --- a/gcc/doc/tm.texi.in +++ b/gcc/doc/tm.texi.in @@ -2166,6 +2166,14 @@ address where its value is either multiplied by a scale factor or added to another register (as well as added to a displacement). @end defmac +@defmac INSN_INDEX_REG_CLASS (@var{insn}) +A C expression whose value is the register class to which a valid +index register for a specified @var{insn} must belong. This macro is +used when some backend insns may have limited usage of index register +compared with other insns. If you defined this macro, the compiler +will use it instead of @code{INDEX_REG_CLASS}. +@end defmac + @defmac REGNO_OK_FOR_BASE_P (@var{num}) A C expression which is nonzero if register number @var{num} is suitable for use as a base register in operand addresses. |