diff options
Diffstat (limited to 'gcc/ira.c')
| -rw-r--r-- | gcc/ira.c | 16 |
1 files changed, 15 insertions, 1 deletions
@@ -4896,7 +4896,7 @@ split_live_ranges_for_shrink_wrap (void) FOR_BB_INSNS (first, insn) { rtx dest = interesting_dest_for_shprep (insn, call_dom); - if (!dest) + if (!dest || dest == pic_offset_table_rtx) continue; rtx newreg = NULL_RTX; @@ -5048,6 +5048,9 @@ ira (FILE *f) bool saved_flag_caller_saves = flag_caller_saves; enum ira_region saved_flag_ira_region = flag_ira_region; + /* Perform target specific PIC register initialization. */ + targetm.init_pic_reg (); + ira_conflicts_p = optimize > 0; ira_use_lra_p = targetm.lra_p (); @@ -5299,10 +5302,18 @@ do_reload (void) { basic_block bb; bool need_dce; + unsigned pic_offset_table_regno = INVALID_REGNUM; if (flag_ira_verbose < 10) ira_dump_file = dump_file; + /* If pic_offset_table_rtx is a pseudo register, then keep it so + after reload to avoid possible wrong usages of hard reg assigned + to it. */ + if (pic_offset_table_rtx + && REGNO (pic_offset_table_rtx) >= FIRST_PSEUDO_REGISTER) + pic_offset_table_regno = REGNO (pic_offset_table_rtx); + timevar_push (TV_RELOAD); if (ira_use_lra_p) { @@ -5407,6 +5418,9 @@ do_reload (void) inform (DECL_SOURCE_LOCATION (decl), "for %qD", decl); } + if (pic_offset_table_regno != INVALID_REGNUM) + pic_offset_table_rtx = gen_rtx_REG (Pmode, pic_offset_table_regno); + timevar_pop (TV_IRA); } |