diff options
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/pa/pa.c | 16 |
2 files changed, 17 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a1a9b65..f123ab1 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +Fri Aug 27 15:35:24 1999 Jeffrey A Law (law@cygnus.com) + + * pa.c (emit_move_sequence): Do not stop on SUBREG_WORD of an + operand. + Fri Aug 27 14:01:19 1999 Marc Espie <espie@cvs.openbsd.org> * config/openbsd.h: Define SET_ASM_OP. diff --git a/gcc/config/pa/pa.c b/gcc/config/pa/pa.c index 7568f1f..640b02b 100644 --- a/gcc/config/pa/pa.c +++ b/gcc/config/pa/pa.c @@ -1136,8 +1136,12 @@ emit_move_sequence (operands, mode, scratch_reg) && GET_CODE (SUBREG_REG (operand0)) == REG && REGNO (SUBREG_REG (operand0)) >= FIRST_PSEUDO_REGISTER) { - SUBREG_REG (operand0) = reg_equiv_mem[REGNO (SUBREG_REG (operand0))]; - operand0 = alter_subreg (operand0); + /* We must not alter SUBREG_WORD (operand0) since that would confuse + the code which tracks sets/uses for delete_output_reload. */ + rtx temp = gen_rtx_SUBREG (GET_MODE (operand0), + reg_equiv_mem [REGNO (SUBREG_REG (operand0))], + SUBREG_WORD (operand0)); + operand0 = alter_subreg (temp); } if (scratch_reg @@ -1149,8 +1153,12 @@ emit_move_sequence (operands, mode, scratch_reg) && GET_CODE (SUBREG_REG (operand1)) == REG && REGNO (SUBREG_REG (operand1)) >= FIRST_PSEUDO_REGISTER) { - SUBREG_REG (operand1) = reg_equiv_mem[REGNO (SUBREG_REG (operand1))]; - operand1 = alter_subreg (operand1); + /* We must not alter SUBREG_WORD (operand0) since that would confuse + the code which tracks sets/uses for delete_output_reload. */ + rtx temp = gen_rtx_SUBREG (GET_MODE (operand1), + reg_equiv_mem [REGNO (SUBREG_REG (operand1))], + SUBREG_WORD (operand1)); + operand1 = alter_subreg (temp); } if (scratch_reg && reload_in_progress && GET_CODE (operand0) == MEM |