diff options
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index db828e8e416..42940a3c046 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -1653,7 +1653,7 @@ can_combine_p (rtx insn, rtx i3, rtx pred ATTRIBUTE_UNUSED, rtx succ, /* Don't eliminate a store in the stack pointer. */ if (dest == stack_pointer_rtx /* Don't combine with an insn that sets a register to itself if it has - a REG_EQUAL note. This may be part of a REG_NO_CONFLICT sequence. */ + a REG_EQUAL note. This may be part of a LIBCALL sequence. */ || (rtx_equal_p (src, dest) && find_reg_note (insn, REG_EQUAL, NULL_RTX)) /* Can't merge an ASM_OPERANDS. */ || GET_CODE (src) == ASM_OPERANDS @@ -1696,10 +1696,6 @@ can_combine_p (rtx insn, rtx i3, rtx pred ATTRIBUTE_UNUSED, rtx succ, && use_crosses_set_p (src, DF_INSN_LUID (insn))) || (GET_CODE (src) == ASM_OPERANDS && MEM_VOLATILE_P (src)) || GET_CODE (src) == UNSPEC_VOLATILE)) - /* If there is a REG_NO_CONFLICT note for DEST in I3 or SUCC, we get - better register allocation by not doing the combine. */ - || find_reg_note (i3, REG_NO_CONFLICT, dest) - || (succ && find_reg_note (succ, REG_NO_CONFLICT, dest)) /* Don't combine across a CALL_INSN, because that would possibly change whether the life span of some REGs crosses calls or not, and it is a pain to update that information. @@ -12460,7 +12456,6 @@ distribute_notes (rtx notes, rtx from_insn, rtx i3, rtx i2, rtx elim_i2, break; case REG_INC: - case REG_NO_CONFLICT: /* These notes say something about how a register is used. They must be present on any use of the register in I2 or I3. */ if (reg_mentioned_p (XEXP (note, 0), PATTERN (i3))) |