diff options
Diffstat (limited to 'contrib/gcc/optabs.c')
| -rw-r--r-- | contrib/gcc/optabs.c | 32 |
1 files changed, 26 insertions, 6 deletions
diff --git a/contrib/gcc/optabs.c b/contrib/gcc/optabs.c index 2a2ebb3..7249ffa 100644 --- a/contrib/gcc/optabs.c +++ b/contrib/gcc/optabs.c @@ -186,12 +186,16 @@ widen_operand (op, mode, oldmode, unsignedp, no_extend) { rtx result; - /* If we must extend do so. If OP is either a constant or a SUBREG - for a promoted object, also extend since it will be more efficient to - do so. */ + /* If we don't have to extend and this is a constant, return it. */ + if (no_extend && GET_MODE (op) == VOIDmode) + return op; + + /* If we must extend do so. If OP is a SUBREG for a promoted object, also + extend since it will be more efficient to do so unless the signedness of + a promoted object differs from our extension. */ if (! no_extend - || GET_MODE (op) == VOIDmode - || (GET_CODE (op) == SUBREG && SUBREG_PROMOTED_VAR_P (op))) + || (GET_CODE (op) == SUBREG && SUBREG_PROMOTED_VAR_P (op) + && SUBREG_PROMOTED_UNSIGNED_P (op) == unsignedp)) return convert_modes (mode, oldmode, op, unsignedp); /* If MODE is no wider than a single word, we return a paradoxical @@ -2735,11 +2739,18 @@ emit_no_conflict_block (insns, target, op0, op1, equiv) these from the list. */ for (insn = insns; insn; insn = next) { - rtx set = 0; + rtx set = 0, note; int i; next = NEXT_INSN (insn); + /* Some ports (cris) create an libcall regions at their own. We must + avoid any potential nesting of LIBCALLs. */ + if ((note = find_reg_note (insn, REG_LIBCALL, NULL)) != NULL) + remove_note (insn, note); + if ((note = find_reg_note (insn, REG_RETVAL, NULL)) != NULL) + remove_note (insn, note); + if (GET_CODE (PATTERN (insn)) == SET || GET_CODE (PATTERN (insn)) == USE || GET_CODE (PATTERN (insn)) == CLOBBER) set = PATTERN (insn); @@ -2902,6 +2913,14 @@ emit_libcall_block (insns, target, result, equiv) for (insn = insns; insn; insn = next) { rtx set = single_set (insn); + rtx note; + + /* Some ports (cris) create an libcall regions at their own. We must + avoid any potential nesting of LIBCALLs. */ + if ((note = find_reg_note (insn, REG_LIBCALL, NULL)) != NULL) + remove_note (insn, note); + if ((note = find_reg_note (insn, REG_RETVAL, NULL)) != NULL) + remove_note (insn, note); next = NEXT_INSN (insn); @@ -4941,6 +4960,7 @@ init_optabs () truncxfdf2_libfunc = init_one_libfunc ("__truncxfdf2"); trunctfdf2_libfunc = init_one_libfunc ("__trunctfdf2"); + abort_libfunc = init_one_libfunc ("abort"); memcpy_libfunc = init_one_libfunc ("memcpy"); memmove_libfunc = init_one_libfunc ("memmove"); bcopy_libfunc = init_one_libfunc ("bcopy"); |
