diff options
Diffstat (limited to 'meta-oe/recipes-devtools/gcc/gcc-4.5/more-epilogues.patch')
| -rw-r--r-- | meta-oe/recipes-devtools/gcc/gcc-4.5/more-epilogues.patch | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/meta-oe/recipes-devtools/gcc/gcc-4.5/more-epilogues.patch b/meta-oe/recipes-devtools/gcc/gcc-4.5/more-epilogues.patch new file mode 100644 index 0000000000..64f1cf3751 --- /dev/null +++ b/meta-oe/recipes-devtools/gcc/gcc-4.5/more-epilogues.patch @@ -0,0 +1,83 @@ +Index: a/gcc/cfgcleanup.c +=================================================================== +--- a/gcc/cfgcleanup.c (revision 315947) ++++ b/gcc/cfgcleanup.c (working copy) +@@ -1179,13 +1179,19 @@ flow_find_head_matching_sequence (basic_ + + while (true) + { +- +- /* Ignore notes. */ ++ /* Ignore notes, except NOTE_INSN_EPILOGUE_BEG. */ + while (!NONDEBUG_INSN_P (i1) && i1 != BB_END (bb1)) +- i1 = NEXT_INSN (i1); +- ++ { ++ if (NOTE_P (i1) && NOTE_KIND (i1) == NOTE_INSN_EPILOGUE_BEG) ++ break; ++ i1 = NEXT_INSN (i1); ++ } + while (!NONDEBUG_INSN_P (i2) && i2 != BB_END (bb2)) +- i2 = NEXT_INSN (i2); ++ { ++ if (NOTE_P (i2) && NOTE_KIND (i2) == NOTE_INSN_EPILOGUE_BEG) ++ break; ++ i2 = NEXT_INSN (i2); ++ } + + if (NOTE_P (i1) || NOTE_P (i2) + || JUMP_P (i1) || JUMP_P (i2)) +Index: a/gcc/cfglayout.c +=================================================================== +--- a/gcc/cfglayout.c (revision 315947) ++++ b/gcc/cfglayout.c (working copy) +@@ -1295,6 +1295,16 @@ cfg_layout_initialize (unsigned int flag + bb->flags |= BB_NON_LOCAL_GOTO_TARGET; + } + ++ FOR_EACH_BB (bb) ++ { ++ rtx insn; ++ FOR_BB_INSNS (bb, insn) ++ if (NOTE_P (insn) && NOTE_KIND (insn) == NOTE_INSN_EPILOGUE_BEG) ++ { ++ bb->flags |= BB_EPILOGUE_BEGIN; ++ break; ++ } ++ } + cleanup_cfg (CLEANUP_CFGLAYOUT | flags); + } + +Index: a/gcc/basic-block.h +=================================================================== +--- a/gcc/basic-block.h (revision 315947) ++++ b/gcc/basic-block.h (working copy) +@@ -332,7 +332,11 @@ enum bb_flags + + /* Set on blocks that cannot be threaded through. + Only used in cfgcleanup.c. */ +- BB_NONTHREADABLE_BLOCK = 1 << 11 ++ BB_NONTHREADABLE_BLOCK = 1 << 11, ++ ++ /* Set on blocks that have a NOTE_INSN_EPILOGUE_BEGIN. ++ Only used in cfglayout mode. */ ++ BB_EPILOGUE_BEGIN = 1 << 12 + }; + + /* Dummy flag for convenience in the hot/cold partitioning code. */ +Index: a/gcc/cfgrtl.c +=================================================================== +--- a/gcc/cfgrtl.c (revision 315947) ++++ b/gcc/cfgrtl.c (working copy) +@@ -2707,7 +2707,10 @@ cfg_layout_can_merge_blocks_p (basic_blo + not allow us to redirect an edge by replacing a table jump. */ + && (!JUMP_P (BB_END (a)) + || ((!optimize || reload_completed) +- ? simplejump_p (BB_END (a)) : onlyjump_p (BB_END (a))))); ++ ? simplejump_p (BB_END (a)) : onlyjump_p (BB_END (a)))) ++ /* Don't separate a NOTE_INSN_EPILOGUE_BEG from its returnjump. */ ++ && (!(b->flags & BB_EPILOGUE_BEGIN) ++ || returnjump_p (BB_END (b)))); + } + + /* Merge block A and B. The blocks must be mergeable. */ |