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| author | Richard Sandiford <richard.sandiford@arm.com> | 2019-09-30 16:20:04 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2019-09-30 16:20:04 +0000 |
| commit | 737d6a1a1745bdd4041e73800a842a1086967d5d (patch) | |
| tree | 1347aa114cf2ffddae7f64d2e90f4d8389e1aba9 /gcc/reginfo.c | |
| parent | 6ee2cc70024253d2670a4a317158b2a65251a1d1 (diff) | |
| download | gcc-737d6a1a1745bdd4041e73800a842a1086967d5d.zip gcc-737d6a1a1745bdd4041e73800a842a1086967d5d.tar.gz gcc-737d6a1a1745bdd4041e73800a842a1086967d5d.tar.bz2 | |
Pass an ABI to choose_hard_reg_mode
choose_hard_reg_mode previously took a boolean saying whether the
mode needed to be call-preserved. This patch replaces it with an
optional ABI pointer instead, so that the function can use that
to test whether a value is call-saved.
default_dwarf_frame_reg_mode uses eh_edge_abi because that's the
ABI that matters for unwinding. Targets need to override the hook
if they want something different.
2019-09-30 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* rtl.h (predefined_function_abi): Declare.
(choose_hard_reg_mode): Take a pointer to a predefined_function_abi
instead of a boolean call_save flag.
* config/gcn/gcn.c (gcn_hard_regno_caller_save_mode): Update call
accordingly.
* config/i386/i386.h (HARD_REGNO_CALLER_SAVE_MODE): Likewise.
* config/ia64/ia64.h (HARD_REGNO_CALLER_SAVE_MODE): Likewise.
* config/mips/mips.c (mips_hard_regno_caller_save_mode): Likewise.
* config/msp430/msp430.h (HARD_REGNO_CALLER_SAVE_MODE): Likewise.
* config/rs6000/rs6000.h (HARD_REGNO_CALLER_SAVE_MODE): Likewise.
* config/sh/sh.c (sh_hard_regno_caller_save_mode): Likewise.
* reginfo.c (init_reg_modes_target): Likewise.
(choose_hard_reg_mode): Take a pointer to a predefined_function_abi
instead of a boolean call_save flag.
* targhooks.c: Include function-abi.h.
(default_dwarf_frame_reg_mode): Update call to choose_hard_reg_mode,
using eh_edge_abi to choose the mode.
From-SVN: r276312
Diffstat (limited to 'gcc/reginfo.c')
| -rw-r--r-- | gcc/reginfo.c | 22 |
1 files changed, 9 insertions, 13 deletions
diff --git a/gcc/reginfo.c b/gcc/reginfo.c index f084c0e..265157f 100644 --- a/gcc/reginfo.c +++ b/gcc/reginfo.c @@ -442,7 +442,7 @@ init_reg_modes_target (void) for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) { - reg_raw_mode[i] = choose_hard_reg_mode (i, 1, false); + reg_raw_mode[i] = choose_hard_reg_mode (i, 1, NULL); /* If we couldn't find a valid mode, just use the previous mode if it is suitable, otherwise fall back on word_mode. */ @@ -550,10 +550,11 @@ memory_move_secondary_cost (machine_mode mode, reg_class_t rclass, /* Return a machine mode that is legitimate for hard reg REGNO and large enough to save nregs. If we can't find one, return VOIDmode. - If CALL_SAVED is true, only consider modes that are call saved. */ + If ABI is nonnull, only consider modes that are preserved across + calls that use ABI. */ machine_mode choose_hard_reg_mode (unsigned int regno ATTRIBUTE_UNUSED, - unsigned int nregs, bool call_saved) + unsigned int nregs, const predefined_function_abi *abi) { unsigned int /* machine_mode */ m; machine_mode found_mode = VOIDmode, mode; @@ -567,32 +568,28 @@ choose_hard_reg_mode (unsigned int regno ATTRIBUTE_UNUSED, FOR_EACH_MODE_IN_CLASS (mode, MODE_INT) if (hard_regno_nregs (regno, mode) == nregs && targetm.hard_regno_mode_ok (regno, mode) - && (!call_saved - || !targetm.hard_regno_call_part_clobbered (0, regno, mode)) + && (!abi || !abi->clobbers_reg_p (mode, regno)) && maybe_gt (GET_MODE_SIZE (mode), GET_MODE_SIZE (found_mode))) found_mode = mode; FOR_EACH_MODE_IN_CLASS (mode, MODE_FLOAT) if (hard_regno_nregs (regno, mode) == nregs && targetm.hard_regno_mode_ok (regno, mode) - && (!call_saved - || !targetm.hard_regno_call_part_clobbered (0, regno, mode)) + && (!abi || !abi->clobbers_reg_p (mode, regno)) && maybe_gt (GET_MODE_SIZE (mode), GET_MODE_SIZE (found_mode))) found_mode = mode; FOR_EACH_MODE_IN_CLASS (mode, MODE_VECTOR_FLOAT) if (hard_regno_nregs (regno, mode) == nregs && targetm.hard_regno_mode_ok (regno, mode) - && (!call_saved - || !targetm.hard_regno_call_part_clobbered (0, regno, mode)) + && (!abi || !abi->clobbers_reg_p (mode, regno)) && maybe_gt (GET_MODE_SIZE (mode), GET_MODE_SIZE (found_mode))) found_mode = mode; FOR_EACH_MODE_IN_CLASS (mode, MODE_VECTOR_INT) if (hard_regno_nregs (regno, mode) == nregs && targetm.hard_regno_mode_ok (regno, mode) - && (!call_saved - || !targetm.hard_regno_call_part_clobbered (0, regno, mode)) + && (!abi || !abi->clobbers_reg_p (mode, regno)) && maybe_gt (GET_MODE_SIZE (mode), GET_MODE_SIZE (found_mode))) found_mode = mode; @@ -605,8 +602,7 @@ choose_hard_reg_mode (unsigned int regno ATTRIBUTE_UNUSED, mode = (machine_mode) m; if (hard_regno_nregs (regno, mode) == nregs && targetm.hard_regno_mode_ok (regno, mode) - && (!call_saved - || !targetm.hard_regno_call_part_clobbered (0, regno, mode))) + && (!abi || !abi->clobbers_reg_p (mode, regno))) return mode; } |