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| author | Ian Bolton <ian.bolton@arm.com> | 2014-05-13 09:28:35 +0000 |
|---|---|---|
| committer | Ian Bolton <ibolton@gcc.gnu.org> | 2014-05-13 09:28:35 +0000 |
| commit | 73d9ac6a6a221b0bf3f2246004f323a1a353a3aa (patch) | |
| tree | 2441230c424dd28fb13caed593fb77641d774ccf /gcc | |
| parent | 06b906021422980e8b9b7aea0509d24e94777a19 (diff) | |
| download | gcc-73d9ac6a6a221b0bf3f2246004f323a1a353a3aa.zip gcc-73d9ac6a6a221b0bf3f2246004f323a1a353a3aa.tar.gz gcc-73d9ac6a6a221b0bf3f2246004f323a1a353a3aa.tar.bz2 | |
Implement HARD_REGNO_CALLER_SAVE_MODE for AArch64
* config/aarch64/aarch64-protos.h
(aarch64_hard_regno_caller_save_mode): New prototype.
* config/aarch64/aarch64.c (aarch64_hard_regno_caller_save_mode):
New function.
* config/aarch64/aarch64.h (HARD_REGNO_CALLER_SAVE_MODE): New macro.
From-SVN: r210355
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/config/aarch64/aarch64-protos.h | 2 | ||||
| -rw-r--r-- | gcc/config/aarch64/aarch64.c | 18 | ||||
| -rw-r--r-- | gcc/config/aarch64/aarch64.h | 5 |
4 files changed, 33 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 456f740..8352d09 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +2014-05-13 Ian Bolton <ian.bolton@arm.com> + + * config/aarch64/aarch64-protos.h + (aarch64_hard_regno_caller_save_mode): New prototype. + * config/aarch64/aarch64.c (aarch64_hard_regno_caller_save_mode): + New function. + * config/aarch64/aarch64.h (HARD_REGNO_CALLER_SAVE_MODE): New macro. + 2014-05-13 Christian Bruel <christian.bruel@st.com> * target.def (mode_switching): New hook vector. diff --git a/gcc/config/aarch64/aarch64-protos.h b/gcc/config/aarch64/aarch64-protos.h index 04cbc78..7cf7d9f 100644 --- a/gcc/config/aarch64/aarch64-protos.h +++ b/gcc/config/aarch64/aarch64-protos.h @@ -202,6 +202,8 @@ enum aarch64_symbol_type aarch64_classify_symbol (rtx, enum aarch64_symbol_type aarch64_classify_tls_symbol (rtx); enum reg_class aarch64_regno_regclass (unsigned); int aarch64_asm_preferred_eh_data_format (int, int); +enum machine_mode aarch64_hard_regno_caller_save_mode (unsigned, unsigned, + enum machine_mode); int aarch64_hard_regno_mode_ok (unsigned, enum machine_mode); int aarch64_hard_regno_nregs (unsigned, enum machine_mode); int aarch64_simd_attr_length_move (rtx); diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c index 6a6fb03..fabd6a9 100644 --- a/gcc/config/aarch64/aarch64.c +++ b/gcc/config/aarch64/aarch64.c @@ -424,6 +424,24 @@ aarch64_hard_regno_mode_ok (unsigned regno, enum machine_mode mode) return 0; } +/* Implement HARD_REGNO_CALLER_SAVE_MODE. */ +enum machine_mode +aarch64_hard_regno_caller_save_mode (unsigned regno, unsigned nregs, + enum machine_mode mode) +{ + /* Handle modes that fit within single registers. */ + if (nregs == 1 && GET_MODE_SIZE (mode) <= 16) + { + if (GET_MODE_SIZE (mode) >= 4) + return mode; + else + return SImode; + } + /* Fall back to generic for multi-reg and very large modes. */ + else + return choose_hard_reg_mode (regno, nregs, false); +} + /* Return true if calls to DECL should be treated as long-calls (ie called via a register). */ static bool diff --git a/gcc/config/aarch64/aarch64.h b/gcc/config/aarch64/aarch64.h index c9b30d0..0574593 100644 --- a/gcc/config/aarch64/aarch64.h +++ b/gcc/config/aarch64/aarch64.h @@ -824,6 +824,11 @@ do { \ #define SHIFT_COUNT_TRUNCATED !TARGET_SIMD +/* Choose appropriate mode for caller saves, so we do the minimum + required size of load/store. */ +#define HARD_REGNO_CALLER_SAVE_MODE(REGNO, NREGS, MODE) \ + aarch64_hard_regno_caller_save_mode ((REGNO), (NREGS), (MODE)) + /* Callee only saves lower 64-bits of a 128-bit register. Tell the compiler the callee clobbers the top 64-bits when restoring the bottom 64-bits. */ |