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| author | Alexandre Oliva <aoliva@redhat.com> | 2000-10-24 20:24:03 +0000 |
|---|---|---|
| committer | Alexandre Oliva <aoliva@gcc.gnu.org> | 2000-10-24 20:24:03 +0000 |
| commit | c71e12010352a78de030b253bba4792d4d0fc005 (patch) | |
| tree | fd46fe299572bb3d0c2f8277da0cb16f5207d132 /gcc | |
| parent | 5129d2ceee602f1539c4024d081485ea0a7c5f7c (diff) | |
| download | gcc-c71e12010352a78de030b253bba4792d4d0fc005.zip gcc-c71e12010352a78de030b253bba4792d4d0fc005.tar.gz gcc-c71e12010352a78de030b253bba4792d4d0fc005.tar.bz2 | |
combine.c (distribute_notes): Discard REG_LIBCALL and REG_RETVAL when deleting libcall sequence collapsed to...
* combine.c (distribute_notes): Discard REG_LIBCALL and REG_RETVAL
when deleting libcall sequence collapsed to a single instruction.
From-SVN: r37037
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/combine.c | 8 |
2 files changed, 13 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 729e889..66148dc 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2000-10-24 Alexandre Oliva <aoliva@redhat.com> + + * combine.c (distribute_notes): Discard REG_LIBCALL and REG_RETVAL + when deleting libcall sequence collapsed to a single instruction. + 2000-10-24 Andrew Haley <aph@cygnus.co.uk> * expr.c (do_store_flag): Don't crash if either side of a diff --git a/gcc/combine.c b/gcc/combine.c index f381c14..3f90230 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -12239,6 +12239,10 @@ distribute_notes (notes, from_insn, i3, i2, elim_i2, elim_i1) place = prev_real_insn (from_insn); if (tem && place) XEXP (tem, 0) = place; + /* If we're deleting the last remaining instruction of a + libcall sequence, don't add the notes. */ + else if (XEXP (note, 0) == from_insn) + tem = place = 0; } break; @@ -12252,6 +12256,10 @@ distribute_notes (notes, from_insn, i3, i2, elim_i2, elim_i1) place = next_real_insn (from_insn); if (tem && place) XEXP (tem, 0) = place; + /* If we're deleting the last remaining instruction of a + libcall sequence, don't add the notes. */ + else if (XEXP (note, 0) == from_insn) + tem = place = 0; } break; |