diff options
Diffstat (limited to 'gcc/config/sh/sh.c')
| -rw-r--r-- | gcc/config/sh/sh.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/gcc/config/sh/sh.c b/gcc/config/sh/sh.c index 107718069c6..82c780fcd44 100644 --- a/gcc/config/sh/sh.c +++ b/gcc/config/sh/sh.c @@ -1,6 +1,6 @@ /* Output routines for GCC for Renesas / SuperH SH. Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, - 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 + 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc. Contributed by Steve Chamberlain (sac@cygnus.com). Improved by Jim Wilson (wilson@cygnus.com). @@ -575,6 +575,11 @@ static const struct attribute_spec sh_attribute_table[] = /* Machine-specific symbol_ref flags. */ #define SYMBOL_FLAG_FUNCVEC_FUNCTION (SYMBOL_FLAG_MACH_DEP << 0) +/* The tas.b instruction sets the 7th bit in the byte, i.e. 0x80. This value + is used by optabs.c atomic op expansion code as well as in sync.md. */ +#undef TARGET_ATOMIC_TEST_AND_SET_TRUEVAL +#define TARGET_ATOMIC_TEST_AND_SET_TRUEVAL 0x80 + struct gcc_target targetm = TARGET_INITIALIZER; /* Implement TARGET_OPTION_OVERRIDE macro. Validate and override @@ -11492,8 +11497,15 @@ sh_register_move_cost (enum machine_mode mode, && REGCLASS_HAS_GENERAL_REG (srcclass)) || (REGCLASS_HAS_GENERAL_REG (dstclass) && REGCLASS_HAS_FP_REG (srcclass))) - return ((TARGET_SHMEDIA ? 4 : TARGET_FMOVD ? 8 : 12) - * ((GET_MODE_SIZE (mode) + 7) / 8U)); + { + /* Discourage trying to use fp regs for a pointer. This also + discourages fp regs with SImode because Pmode is an alias + of SImode on this target. See PR target/48596. */ + int addend = (mode == Pmode) ? 40 : 0; + + return (((TARGET_SHMEDIA ? 4 : TARGET_FMOVD ? 8 : 12) + addend) + * ((GET_MODE_SIZE (mode) + 7) / 8U)); + } if ((dstclass == FPUL_REGS && REGCLASS_HAS_GENERAL_REG (srcclass)) |