From 4164ad584ebdc233ba487903d919c730768c82d3 Mon Sep 17 00:00:00 2001 From: bernds Date: Fri, 4 Jun 2010 12:44:01 +0000 Subject: PR rtl-optimization/39871 PR rtl-optimization/40615 PR rtl-optimization/42500 PR rtl-optimization/42502 * ira.c (init_reg_equiv_memory_loc: New function. (ira): Call it twice. * reload.h (calculate_elim_costs_all_insns): Declare. * ira-costs.c: Include "reload.h". (regno_equiv_gains): New static variable. (init_costs): Allocate it. (finish_costs): Free it. (ira_costs): Call calculate_elim_costs_all_insns. (find_costs_and_classes): Take estimated elimination costs into account. (ira_adjust_equiv_reg_cost): New function. * ira.h (ira_adjust_equiv_reg_cost): Declare it. * reload1.c (init_eliminable_invariants, free_reg_equiv, elimination_costs_in_insn, note_reg_elim_costly): New static functions. (elim_bb): New static variable. (reload): Move code out of here into init_eliminable_invariants and free_reg_equiv. Call them. (calculate_elim_costs_all_insns): New function. (eliminate_regs_1): Declare. Add extra arg FOR_COSTS; all callers changed. If FOR_COSTS is true, don't call alter_reg, but call note_reg_elim_costly if we turned a valid memory address into an invalid one. * Makefile.in (ira-costs.o): Depend on reload.h. testsuite/ PR rtl-optimization/39871 PR rtl-optimization/40615 PR rtl-optimization/42500 PR rtl-optimization/42502 * gcc.target/arm/eliminate.c: New test. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@160260 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/reload.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'gcc/reload.h') diff --git a/gcc/reload.h b/gcc/reload.h index a28567014d3..8168b51f020 100644 --- a/gcc/reload.h +++ b/gcc/reload.h @@ -349,6 +349,10 @@ extern void mark_home_live (int); extern rtx eliminate_regs (rtx, enum machine_mode, rtx); extern bool elimination_target_reg_p (rtx); +/* Called from the register allocator to estimate costs of eliminating + invariant registers. */ +extern void calculate_elim_costs_all_insns (void); + /* Deallocate the reload register used by reload number R. */ extern void deallocate_reload_reg (int r); -- cgit v1.2.1