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author | Seongbae Park <seongbae.park@gmail.com> | 2007-06-18 20:49:23 +0000 |
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committer | Seongbae Park <spark@gcc.gnu.org> | 2007-06-18 20:49:23 +0000 |
commit | bfff9190695b229b6d0c9432e4c0f4b12401841d (patch) | |
tree | d389cd31a3929555328650e9fcad1777bd249ca0 /gcc/gcse.c | |
parent | aacc93b5cae884a2396093f0f357404745b32a7c (diff) | |
download | gcc-bfff9190695b229b6d0c9432e4c0f4b12401841d.zip gcc-bfff9190695b229b6d0c9432e4c0f4b12401841d.tar.gz gcc-bfff9190695b229b6d0c9432e4c0f4b12401841d.tar.bz2 |
re PR middle-end/32321 (ICE in df_refs_verify with -fgcse-sm)
2007-06-18 Seongbae Park <seongbae.park@gmail.com>
PR rtl-optimization/32321
* gcse.c (replace_store_insn): Update the note before
calling emit_insn_after.
From-SVN: r125827
Diffstat (limited to 'gcc/gcse.c')
-rw-r--r-- | gcc/gcse.c | 25 |
1 files changed, 14 insertions, 11 deletions
@@ -6341,17 +6341,6 @@ replace_store_insn (rtx reg, rtx del, basic_block bb, struct ls_expr *smexpr) mem = smexpr->pattern; insn = gen_move_insn (reg, SET_SRC (single_set (del))); - insn = emit_insn_after (insn, del); - - if (dump_file) - { - fprintf (dump_file, - "STORE_MOTION delete insn in BB %d:\n ", bb->index); - print_inline_rtx (dump_file, del, 6); - fprintf (dump_file, "\nSTORE MOTION replaced with insn:\n "); - print_inline_rtx (dump_file, insn, 6); - fprintf (dump_file, "\n"); - } for (ptr = ANTIC_STORE_LIST (smexpr); ptr; ptr = XEXP (ptr, 1)) if (XEXP (ptr, 0) == del) @@ -6379,6 +6368,20 @@ replace_store_insn (rtx reg, rtx del, basic_block bb, struct ls_expr *smexpr) XEXP (note, 0) = insn; } + /* Emit the insn AFTER all the notes are transferred. + This is cheaper since we avoid df rescanning for the note change. */ + insn = emit_insn_after (insn, del); + + if (dump_file) + { + fprintf (dump_file, + "STORE_MOTION delete insn in BB %d:\n ", bb->index); + print_inline_rtx (dump_file, del, 6); + fprintf (dump_file, "\nSTORE MOTION replaced with insn:\n "); + print_inline_rtx (dump_file, insn, 6); + fprintf (dump_file, "\n"); + } + delete_insn (del); /* Now we must handle REG_EQUAL notes whose contents is equal to the mem; |