diff options
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index 9be230a51e2..11cee8559c1 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -113,6 +113,10 @@ along with GCC; see the file COPYING3. If not see #include "obstack.h" #include "rtl-iter.h" +#ifndef LOAD_EXTEND_OP +#define LOAD_EXTEND_OP(M) UNKNOWN +#endif + /* Number of attempts to combine instructions in this function. */ static int combine_attempts; @@ -3744,7 +3748,6 @@ try_combine (rtx_insn *i3, rtx_insn *i2, rtx_insn *i1, rtx_insn *i0, be written as a ZERO_EXTEND. */ if (split_code == SUBREG && MEM_P (SUBREG_REG (*split))) { -#ifdef LOAD_EXTEND_OP /* Or as a SIGN_EXTEND if LOAD_EXTEND_OP says that that's what it really is. */ if (LOAD_EXTEND_OP (GET_MODE (SUBREG_REG (*split))) @@ -3752,7 +3755,6 @@ try_combine (rtx_insn *i3, rtx_insn *i2, rtx_insn *i1, rtx_insn *i0, SUBST (*split, gen_rtx_SIGN_EXTEND (split_mode, SUBREG_REG (*split))); else -#endif SUBST (*split, gen_rtx_ZERO_EXTEND (split_mode, SUBREG_REG (*split))); } @@ -6772,7 +6774,6 @@ simplify_set (rtx x) } } -#ifdef LOAD_EXTEND_OP /* If we have (set FOO (subreg:M (mem:N BAR) 0)) with M wider than N, this would require a paradoxical subreg. Replace the subreg with a zero_extend to avoid the reload that would otherwise be required. */ @@ -6790,7 +6791,6 @@ simplify_set (rtx x) src = SET_SRC (x); } -#endif /* If we don't have a conditional move, SET_SRC is an IF_THEN_ELSE, and we are comparing an item known to be 0 or -1 against 0, use a logical |