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| author | Trevor Saunders <tbsaunde+gcc@tbsaunde.org> | 2015-07-09 02:49:51 +0000 |
|---|---|---|
| committer | Trevor Saunders <tbsaunde@gcc.gnu.org> | 2015-07-09 02:49:51 +0000 |
| commit | f1657f05ef0fbc5183051de277141159f15a9472 (patch) | |
| tree | e4dc3a562a1e0900ee3ab1384aba87e00500bcef /gcc/cse.c | |
| parent | 1acfc9ca30d79133bca85399440c0d7fa123fb51 (diff) | |
| download | gcc-f1657f05ef0fbc5183051de277141159f15a9472.zip gcc-f1657f05ef0fbc5183051de277141159f15a9472.tar.gz gcc-f1657f05ef0fbc5183051de277141159f15a9472.tar.bz2 | |
reduce conditional compilation for LOAD_EXTEND_OP
Provide a default in files where that is possible, so that everything
else there can be unconditionally compiled. However rtlanal.c and
reload.c do tricky things that break providing a global default, so we
can't do that yet.
gcc/ChangeLog:
2015-07-08 Trevor Saunders <tbsaunde+gcc@tbsaunde.org>
* combine.c (try_combine): Don't check if LOAD_EXTEND_OP is
defined.
(simplify_set): Likewise.
* cse.c (cse_insn): Likewise.
* fold-const.c (fold_single_bit_test): Likewise.
(fold_unary_loc): Likewise.
* postreload.c (reload_cse_simplify_set): Likewise.
(reload_cse_simplify_operands): Likewise.
From-SVN: r225591
Diffstat (limited to 'gcc/cse.c')
| -rw-r--r-- | gcc/cse.c | 6 |
1 files changed, 4 insertions, 2 deletions
@@ -51,6 +51,10 @@ along with GCC; see the file COPYING3. If not see #include "dbgcnt.h" #include "rtl-iter.h" +#ifndef LOAD_EXTEND_OP +#define LOAD_EXTEND_OP(M) UNKNOWN +#endif + /* The basic idea of common subexpression elimination is to go through the code, keeping a record of expressions that would have the same value at the current scan point, and replacing @@ -4867,7 +4871,6 @@ cse_insn (rtx_insn *insn) } } -#ifdef LOAD_EXTEND_OP /* See if a MEM has already been loaded with a widening operation; if it has, we can use a subreg of that. Many CISC machines also have such operations, but this is only likely to be @@ -4913,7 +4916,6 @@ cse_insn (rtx_insn *insn) break; } } -#endif /* LOAD_EXTEND_OP */ /* Try to express the constant using a register+offset expression derived from a constant anchor. */ |