diff options
Diffstat (limited to 'gcc-4.9/gcc/config/pa/pa.c')
| -rw-r--r-- | gcc-4.9/gcc/config/pa/pa.c | 87 |
1 files changed, 55 insertions, 32 deletions
diff --git a/gcc-4.9/gcc/config/pa/pa.c b/gcc-4.9/gcc/config/pa/pa.c index 871e4e5c6..5a7598ca7 100644 --- a/gcc-4.9/gcc/config/pa/pa.c +++ b/gcc-4.9/gcc/config/pa/pa.c @@ -4155,8 +4155,7 @@ static void pa_output_function_epilogue (FILE *file, HOST_WIDE_INT size ATTRIBUTE_UNUSED) { rtx insn = get_last_insn (); - - last_address = 0; + bool extra_nop; /* pa_expand_epilogue does the dirty work now. We just need to output the assembler directives which denote the end @@ -4180,8 +4179,10 @@ pa_output_function_epilogue (FILE *file, HOST_WIDE_INT size ATTRIBUTE_UNUSED) if (insn && CALL_P (insn)) { fputs ("\tnop\n", file); - last_address += 4; + extra_nop = true; } + else + extra_nop = false; fputs ("\t.EXIT\n\t.PROCEND\n", file); @@ -4194,12 +4195,13 @@ pa_output_function_epilogue (FILE *file, HOST_WIDE_INT size ATTRIBUTE_UNUSED) cfun->machine->in_nsubspa = 2; } - /* Thunks do their own accounting. */ + /* Thunks do their own insn accounting. */ if (cfun->is_thunk) return; if (INSN_ADDRESSES_SET_P ()) { + last_address = extra_nop ? 4 : 0; insn = get_last_nonnote_insn (); last_address += INSN_ADDRESSES (INSN_UID (insn)); if (INSN_P (insn)) @@ -8293,12 +8295,16 @@ pa_asm_output_mi_thunk (FILE *file, tree thunk_fndecl, HOST_WIDE_INT delta, || ((DECL_SECTION_NAME (thunk_fndecl) == DECL_SECTION_NAME (function)) && last_address < 262132))) + /* In this case, we need to be able to reach the start of + the stub table even though the function is likely closer + and can be jumped to directly. */ || (targetm_common.have_named_sections && DECL_SECTION_NAME (thunk_fndecl) == NULL && DECL_SECTION_NAME (function) == NULL - && last_address < 262132) + && total_code_bytes < MAX_PCREL17F_OFFSET) + /* Likewise. */ || (!targetm_common.have_named_sections - && last_address < 262132)))) + && total_code_bytes < MAX_PCREL17F_OFFSET)))) { if (!val_14) output_asm_insn ("addil L'%2,%%r26", xoperands); @@ -8944,40 +8950,15 @@ pa_following_call (rtx insn) } /* We use this hook to perform a PA specific optimization which is difficult - to do in earlier passes. - - We surround the jump table itself with BEGIN_BRTAB and END_BRTAB - insns. Those insns mark where we should emit .begin_brtab and - .end_brtab directives when using GAS. This allows for better link - time optimizations. */ + to do in earlier passes. */ static void pa_reorg (void) { - rtx insn; - remove_useless_addtr_insns (1); if (pa_cpu < PROCESSOR_8000) pa_combine_instructions (); - - /* Still need brtab marker insns. FIXME: the presence of these - markers disables output of the branch table to readonly memory, - and any alignment directives that might be needed. Possibly, - the begin_brtab insn should be output before the label for the - table. This doesn't matter at the moment since the tables are - always output in the text section. */ - for (insn = get_insns (); insn; insn = NEXT_INSN (insn)) - { - /* Find an ADDR_VEC insn. */ - if (! JUMP_TABLE_DATA_P (insn)) - continue; - - /* Now generate markers for the beginning and end of the - branch table. */ - emit_insn_before (gen_begin_brtab (), insn); - emit_insn_after (gen_end_brtab (), insn); - } } /* The PA has a number of odd instructions which can perform multiple @@ -10572,4 +10553,46 @@ pa_legitimize_reload_address (rtx ad, enum machine_mode mode, return NULL_RTX; } +/* Output address vector. */ + +void +pa_output_addr_vec (rtx lab, rtx body) +{ + int idx, vlen = XVECLEN (body, 0); + + targetm.asm_out.internal_label (asm_out_file, "L", CODE_LABEL_NUMBER (lab)); + if (TARGET_GAS) + fputs ("\t.begin_brtab\n", asm_out_file); + for (idx = 0; idx < vlen; idx++) + { + ASM_OUTPUT_ADDR_VEC_ELT + (asm_out_file, CODE_LABEL_NUMBER (XEXP (XVECEXP (body, 0, idx), 0))); + } + if (TARGET_GAS) + fputs ("\t.end_brtab\n", asm_out_file); +} + +/* Output address difference vector. */ + +void +pa_output_addr_diff_vec (rtx lab, rtx body) +{ + rtx base = XEXP (XEXP (body, 0), 0); + int idx, vlen = XVECLEN (body, 1); + + targetm.asm_out.internal_label (asm_out_file, "L", CODE_LABEL_NUMBER (lab)); + if (TARGET_GAS) + fputs ("\t.begin_brtab\n", asm_out_file); + for (idx = 0; idx < vlen; idx++) + { + ASM_OUTPUT_ADDR_DIFF_ELT + (asm_out_file, + body, + CODE_LABEL_NUMBER (XEXP (XVECEXP (body, 1, idx), 0)), + CODE_LABEL_NUMBER (base)); + } + if (TARGET_GAS) + fputs ("\t.end_brtab\n", asm_out_file); +} + #include "gt-pa.h" |