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| author | Segher Boessenkool <segher@kernel.crashing.org> | 2016-10-12 17:34:39 +0200 |
|---|---|---|
| committer | Segher Boessenkool <segher@gcc.gnu.org> | 2016-10-12 17:34:39 +0200 |
| commit | 61f41369f1e1c6d8b83d4b644c24aebcc90f522f (patch) | |
| tree | 57e6c0241ef8227a5614c375428a61b6023c3c17 /gcc/fortran/trans-expr.c | |
| parent | aa07dfe7a053e6c7faad05c87306ee6829356eb3 (diff) | |
| download | gcc-61f41369f1e1c6d8b83d4b644c24aebcc90f522f.zip gcc-61f41369f1e1c6d8b83d4b644c24aebcc90f522f.tar.gz gcc-61f41369f1e1c6d8b83d4b644c24aebcc90f522f.tar.bz2 | |
rs6000: Separate shrink-wrapping
This implements the hooks for separate shrink-wrapping for rs6000.
It handles GPRs and LR. The GPRs get a component number corresponding
to their register number; LR gets component number 0.
* config/rs6000/rs6000.c (machine_function): Add new fields
gpr_is_wrapped_separately and lr_is_wrapped_separately.
(TARGET_SHRINK_WRAP_GET_SEPARATE_COMPONENTS,
TARGET_SHRINK_WRAP_COMPONENTS_FOR_BB,
TARGET_SHRINK_WRAP_DISQUALIFY_COMPONENTS,
TARGET_SHRINK_WRAP_EMIT_PROLOGUE_COMPONENTS,
TARGET_SHRINK_WRAP_EMIT_EPILOGUE_COMPONENTS,
TARGET_SHRINK_WRAP_SET_HANDLED_COMPONENTS): Define.
(rs6000_get_separate_components): New function.
(rs6000_components_for_bb): New function.
(rs6000_disqualify_components): New function.
(rs6000_emit_prologue_components): New function.
(rs6000_emit_epilogue_components): New function.
(rs6000_set_handled_components): New function.
(rs6000_emit_prologue): Don't emit LR save if lr_is_wrapped_separately.
Don't emit GPR saves if gpr_is_wrapped_separately for that register.
(restore_saved_lr): Don't restore LR if lr_is_wrapped_separately.
(rs6000_emit_epilogue): Don't emit GPR restores if
gpr_is_wrapped_separately for that register. Don't make a
REG_CFA_RESTORE note for registers we did not restore, either.
From-SVN: r241065
Diffstat (limited to 'gcc/fortran/trans-expr.c')
0 files changed, 0 insertions, 0 deletions