diff options
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/expr.c | 32 |
2 files changed, 17 insertions, 20 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 4574634..bfd8a0b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +Tue Jan 19 21:08:20 1999 Richard Henderson <rth@cygnus.com> + + * expr.c (emit_move_insn_1): Revert 17 Dec change. Don't emit + clobber during or after reload. + Tue Jan 19 16:56:03 1999 Richard Henderson <rth@cygnus.com> * genoutput.c (name_for_index): New function. @@ -2578,17 +2578,13 @@ emit_move_insn_1 (x, y) } else { - /* Show the output dies here. This is only necessary for pseudos. */ - if (x != y) + /* Show the output dies here. This is necessary for pseudos; + hard regs shouldn't appear here except as return values. + We never want to emit such a clobber after reload. */ + if (x != y + && ! (reload_in_progress || reload_completed)) { - rtx reg = x; - - while (GET_CODE (reg) == SUBREG) - reg = SUBREG_REG (reg); - - if (GET_CODE (reg) == REG - && REGNO (reg) >= FIRST_PSEUDO_REGISTER) - emit_insn (gen_rtx_CLOBBER (VOIDmode, x)); + emit_insn (gen_rtx_CLOBBER (VOIDmode, x)); } emit_insn (GEN_FCN (mov_optab->handlers[(int) submode].insn_code) @@ -2618,17 +2614,13 @@ emit_move_insn_1 (x, y) } #endif - /* Show the output dies here. This is only necessary for pseudos. */ - if (x != y) + /* Show the output dies here. This is necessary for pseudos; + hard regs shouldn't appear here except as return values. + We never want to emit such a clobber after reload. */ + if (x != y + && ! (reload_in_progress || reload_completed)) { - rtx reg = x; - - while (GET_CODE (reg) == SUBREG) - reg = SUBREG_REG (reg); - - if (GET_CODE (reg) == REG - && REGNO (reg) >= FIRST_PSEUDO_REGISTER) - emit_insn (gen_rtx_CLOBBER (VOIDmode, x)); + emit_insn (gen_rtx_CLOBBER (VOIDmode, x)); } for (i = 0; |