diff options
Diffstat (limited to 'gcc/toplev.c')
| -rw-r--r-- | gcc/toplev.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/gcc/toplev.c b/gcc/toplev.c index 6d84c915c4e..920dba5df55 100644 --- a/gcc/toplev.c +++ b/gcc/toplev.c @@ -270,6 +270,7 @@ enum dump_file_index DFI_peephole2, DFI_sched2, DFI_bbro, + DFI_rnreg, DFI_jump2, DFI_mach, DFI_dbr, @@ -302,6 +303,7 @@ struct dump_file_info dump_file[DFI_MAX] = { "peephole2", 'z', 1, 0, 0 }, { "sched2", 'R', 1, 0, 0 }, { "bbro", 'B', 1, 0, 0 }, + { "rnreg", 'n', 1, 0, 0 }, { "jump2", 'J', 1, 0, 0 }, { "mach", 'M', 1, 0, 0 }, { "dbr", 'd', 0, 0, 0 }, @@ -423,6 +425,10 @@ int flag_branch_probabilities = 0; int flag_reorder_blocks = 0; +/* Nonzero if registers should be renamed */ + +int flag_rename_registers = 0; + /* Nonzero for -pedantic switch: warn about anything that standard spec forbids. */ @@ -1019,6 +1025,8 @@ lang_independent_options f_options[] = "Use profiling information for branch probabilities" }, {"reorder-blocks", &flag_reorder_blocks, 1, "Reorder basic blocks to improve code placement" }, + {"rename-registers", &flag_rename_registers, 1, + "Do the register renaming optimization pass"}, {"fast-math", &flag_fast_math, 1, "Improve FP speed by violating ANSI & IEEE rules" }, {"common", &flag_no_common, 0, @@ -1415,6 +1423,7 @@ int peephole2_time; int sched2_time; int dbr_sched_time; int reorder_blocks_time; +int rename_registers_time; int shorten_branch_time; int stack_reg_time; int final_time; @@ -2164,6 +2173,7 @@ compile_file (name) sched2_time = 0; dbr_sched_time = 0; reorder_blocks_time = 0; + rename_registers_time = 0; shorten_branch_time = 0; stack_reg_time = 0; final_time = 0; @@ -2572,6 +2582,7 @@ compile_file (name) print_time ("dbranch", dbr_sched_time); #endif print_time ("bbro", reorder_blocks_time); + print_time ("rnreg", rename_registers_time); print_time ("shorten-branch", shorten_branch_time); #ifdef STACK_REGS print_time ("stack-reg", stack_reg_time); @@ -3421,6 +3432,15 @@ rest_of_compilation (decl) close_dump_file (DFI_bbro, print_rtl_with_bb, insns); } + if (optimize > 0 && flag_rename_registers) + { + open_dump_file (DFI_rnreg, decl); + + TIMEVAR (rename_registers_time, regrename_optimize ()); + + close_dump_file (DFI_rnreg, print_rtl_with_bb, insns); + } + /* One more attempt to remove jumps to .+1 left by dead-store elimination. Also do cross-jumping this time and delete no-op move insns. */ |