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| author | Jan Hubicka <jh@suse.cz> | 2001-02-24 03:22:07 +0100 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2001-02-24 02:22:07 +0000 |
| commit | 016030fea6d929c69ce92ec45b797da303c09ab6 (patch) | |
| tree | 568578ca5083b7991e0c10b6fba808e37b087289 /gcc | |
| parent | c9212f333ae38c52c16184bb00e8af622d88901b (diff) | |
| download | gcc-016030fea6d929c69ce92ec45b797da303c09ab6.zip gcc-016030fea6d929c69ce92ec45b797da303c09ab6.tar.gz gcc-016030fea6d929c69ce92ec45b797da303c09ab6.tar.bz2 | |
function.c (epilogue_done): Be ready for first basic block not containing PROLOGUE_END note.
* function.c (epilogue_done): Be ready for first basic block not
containing PROLOGUE_END note.
(reposition_prologue_and_epilogue_notes): Avoid placing
PROLOGUE_END note between BASIC_BLOCK.
From-SVN: r40020
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/function.c | 13 |
2 files changed, 18 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 15881bd..e035967 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +Sat Feb 24 03:19:42 CET 2001 Jan Hubicka <jh@suse.cz> + + * function.c (epilogue_done): Be ready for first basic block not + containing PROLOGUE_END note. + (reposition_prologue_and_epilogue_notes): Avoid placing + PROLOGUE_END note between BASIC_BLOCK. + Sat Feb 24 03:17:09 CET 2001 Jan Hubicka <jh@suse.cz> * loop.c (canonicalize_condition): Move to reversed_comparison_code. diff --git a/gcc/function.c b/gcc/function.c index 1c3ee31..a1c2d33 100644 --- a/gcc/function.c +++ b/gcc/function.c @@ -7384,7 +7384,13 @@ epilogue_done: there are line number notes before where we inserted the prologue we should move them, and (2) we should generate a note before the end of the first basic block, if there isn't - one already there. */ + one already there. + + ??? This behaviour is completely broken when dealing with + multiple entry functions. We simply place the note always + into first basic block and let alternate entry points + to be missed. + */ for (insn = prologue_end; insn; insn = prev) { @@ -7402,7 +7408,7 @@ epilogue_done: /* Find the last line number note in the first block. */ for (insn = BASIC_BLOCK (0)->end; - insn != prologue_end; + insn != prologue_end && insn; insn = PREV_INSN (insn)) if (GET_CODE (insn) == NOTE && NOTE_LINE_NUMBER (insn) > 0) break; @@ -7487,6 +7493,9 @@ reposition_prologue_and_epilogue_notes (f) BLOCK_HEAD (0) = next; remove_insn (note); + /* Avoid placing note between CODE_LABEL and BASIC_BLOCK note. */ + if (GET_CODE (insn) == CODE_LABEL) + insn = NEXT_INSN (insn); add_insn_after (note, insn); } } |