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| author | Zdenek Dvorak <rakdver@atrey.karlin.mff.cuni.cz> | 2004-09-01 22:28:39 +0200 |
|---|---|---|
| committer | Zdenek Dvorak <rakdver@gcc.gnu.org> | 2004-09-01 20:28:39 +0000 |
| commit | d7fe1183215b7a04b62839775c775e6c4a5c90e1 (patch) | |
| tree | c06fe73702cc358a9c7856a21cfb57fab47331bf | |
| parent | 57b38f517c7f434809f5ceb5be1e3bf4c0055bf9 (diff) | |
| download | gcc-d7fe1183215b7a04b62839775c775e6c4a5c90e1.zip gcc-d7fe1183215b7a04b62839775c775e6c4a5c90e1.tar.gz gcc-d7fe1183215b7a04b62839775c775e6c4a5c90e1.tar.bz2 | |
re PR rtl-optimization/16408 (internal compiler error: in delete_insn, at cfgrtl.c:146)
PR rtl-optimization/16408
* gcse.c (replace_store_insn): Fix LIBCALL/RETVAL notes.
From-SVN: r86928
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/gcse.c | 22 |
2 files changed, 26 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 220d75d..e091271 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2004-09-01 Zdenek Dvorak <rakdver@atrey.karlin.mff.cuni.cz> + + PR rtl-optimization/16408 + * gcse.c (replace_store_insn): Fix LIBCALL/RETVAL notes. + 2004-09-01 Richard Henderson <rth@redhat.com> * config/ns32k/ns32k.h (TRANSFER_FROM_TRAMPOLINE): Remove. @@ -6321,7 +6321,7 @@ remove_reachable_equiv_notes (basic_block bb, struct ls_expr *smexpr) static void replace_store_insn (rtx reg, rtx del, basic_block bb, struct ls_expr *smexpr) { - rtx insn, mem, note, set, ptr; + rtx insn, mem, note, set, ptr, pair; mem = smexpr->pattern; insn = gen_move_insn (reg, SET_SRC (single_set (del))); @@ -6343,6 +6343,26 @@ replace_store_insn (rtx reg, rtx del, basic_block bb, struct ls_expr *smexpr) XEXP (ptr, 0) = insn; break; } + + /* Move the notes from the deleted insn to its replacement, and patch + up the LIBCALL notes. */ + REG_NOTES (insn) = REG_NOTES (del); + + note = find_reg_note (insn, REG_RETVAL, NULL_RTX); + if (note) + { + pair = XEXP (note, 0); + note = find_reg_note (pair, REG_LIBCALL, NULL_RTX); + XEXP (note, 0) = insn; + } + note = find_reg_note (insn, REG_LIBCALL, NULL_RTX); + if (note) + { + pair = XEXP (note, 0); + note = find_reg_note (pair, REG_RETVAL, NULL_RTX); + XEXP (note, 0) = insn; + } + delete_insn (del); /* Now we must handle REG_EQUAL notes whose contents is equal to the mem; |