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author | Richard Sandiford <richard.sandiford@arm.com> | 2019-09-30 16:19:49 +0000 |
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committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2019-09-30 16:19:49 +0000 |
commit | 5a5a3bc5fa14664be26748c11325021b6b6f8e74 (patch) | |
tree | 049b62e2f4fbaa496017f9703a2f5375610da646 /gcc/resource.c | |
parent | 002ffd3caa684c3eb30f8f53206439b7aa34b370 (diff) | |
download | gcc-5a5a3bc5fa14664be26748c11325021b6b6f8e74.zip gcc-5a5a3bc5fa14664be26748c11325021b6b6f8e74.tar.gz gcc-5a5a3bc5fa14664be26748c11325021b6b6f8e74.tar.bz2 |
Add a function for getting the ABI of a call insn target
This patch replaces get_call_reg_set_usage with insn_callee_abi,
which returns the ABI of the target of a call insn. The ABI's
full_reg_clobbers corresponds to regs_invalidated_by_call,
whereas many callers instead passed call_used_or_fixed_regs, i.e.:
(regs_invalidated_by_call | fixed_reg_set)
The patch slavishly preserves the "| fixed_reg_set" for these callers;
later patches will clean this up.
2019-09-30 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* target.def (insn_callee_abi): New hook.
(remove_extra_call_preserved_regs): Delete.
* doc/tm.texi.in (TARGET_INSN_CALLEE_ABI): New macro.
(TARGET_REMOVE_EXTRA_CALL_PRESERVED_REGS): Delete.
* doc/tm.texi: Regenerate.
* targhooks.h (default_remove_extra_call_preserved_regs): Delete.
* targhooks.c (default_remove_extra_call_preserved_regs): Delete.
* config/aarch64/aarch64.c (aarch64_simd_call_p): Constify the
insn argument.
(aarch64_remove_extra_call_preserved_regs): Delete.
(aarch64_insn_callee_abi): New function.
(TARGET_REMOVE_EXTRA_CALL_PRESERVED_REGS): Delete.
(TARGET_INSN_CALLEE_ABI): New macro.
* rtl.h (get_call_fndecl): Declare.
(cgraph_rtl_info): Fix formatting. Tweak comment for
function_used_regs. Remove function_used_regs_valid.
* rtlanal.c (get_call_fndecl): Moved from final.c
* function-abi.h (insn_callee_abi): Declare.
(target_function_abi_info): Mention insn_callee_abi.
* function-abi.cc (fndecl_abi): Handle flag_ipa_ra in a similar
way to get_call_reg_set_usage did.
(insn_callee_abi): New function.
* regs.h (get_call_reg_set_usage): Delete.
* final.c: Include function-abi.h.
(collect_fn_hard_reg_usage): Add fixed and stack registers to
function_used_regs before the main loop rather than afterwards.
Use insn_callee_abi instead of get_call_reg_set_usage. Exit early
if function_used_regs ends up not being useful.
(get_call_fndecl): Move to rtlanal.c
(get_call_cgraph_rtl_info, get_call_reg_set_usage): Delete.
* caller-save.c: Include function-abi.h.
(setup_save_areas, save_call_clobbered_regs): Use insn_callee_abi
instead of get_call_reg_set_usage.
* cfgcleanup.c: Include function-abi.h.
(old_insns_match_p): Use insn_callee_abi instead of
get_call_reg_set_usage.
* cgraph.h (cgraph_node::rtl_info): Take a const_tree instead of
a tree.
* cgraph.c (cgraph_node::rtl_info): Likewise. Initialize
function_used_regs.
* df-scan.c: Include function-abi.h.
(df_get_call_refs): Use insn_callee_abi instead of
get_call_reg_set_usage.
* ira-lives.c: Include function-abi.h.
(process_bb_node_lives): Use insn_callee_abi instead of
get_call_reg_set_usage.
* lra-lives.c: Include function-abi.h.
(process_bb_lives): Use insn_callee_abi instead of
get_call_reg_set_usage.
* postreload.c: Include function-abi.h.
(reload_combine): Use insn_callee_abi instead of
get_call_reg_set_usage.
* regcprop.c: Include function-abi.h.
(copyprop_hardreg_forward_1): Use insn_callee_abi instead of
get_call_reg_set_usage.
* resource.c: Include function-abi.h.
(mark_set_resources, mark_target_live_regs): Use insn_callee_abi
instead of get_call_reg_set_usage.
* var-tracking.c: Include function-abi.h.
(dataflow_set_clear_at_call): Use insn_callee_abi instead of
get_call_reg_set_usage.
From-SVN: r276309
Diffstat (limited to 'gcc/resource.c')
-rw-r--r-- | gcc/resource.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/gcc/resource.c b/gcc/resource.c index 2d30e08..c66b6e3 100644 --- a/gcc/resource.c +++ b/gcc/resource.c @@ -30,6 +30,7 @@ along with GCC; see the file COPYING3. If not see #include "resource.h" #include "insn-attr.h" #include "params.h" +#include "function-abi.h" /* This structure is used to record liveness information at the targets or fallthrough insns of branches. We will most likely need the information @@ -662,12 +663,10 @@ mark_set_resources (rtx x, struct resources *res, int in_dest, { rtx_call_insn *call_insn = as_a <rtx_call_insn *> (x); rtx link; - HARD_REG_SET regs; res->cc = res->memory = 1; - get_call_reg_set_usage (call_insn, ®s, regs_invalidated_by_call); - res->regs |= regs; + res->regs |= insn_callee_abi (call_insn).full_reg_clobbers (); for (link = CALL_INSN_FUNCTION_USAGE (call_insn); link; link = XEXP (link, 1)) @@ -1038,10 +1037,8 @@ mark_target_live_regs (rtx_insn *insns, rtx target_maybe_return, struct resource predicated instruction, or if the CALL is NORETURN. */ if (GET_CODE (PATTERN (real_insn)) != COND_EXEC) { - HARD_REG_SET regs_invalidated_by_this_call; - get_call_reg_set_usage (real_insn, - ®s_invalidated_by_this_call, - regs_invalidated_by_call); + HARD_REG_SET regs_invalidated_by_this_call + = insn_callee_abi (real_insn).full_reg_clobbers (); /* CALL clobbers all call-used regs that aren't fixed except sp, ap, and fp. Do this before setting the result of the call live. */ |