diff options
Diffstat (limited to 'gcc/regrename.c')
| -rw-r--r-- | gcc/regrename.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/gcc/regrename.c b/gcc/regrename.c index e15bd87f861..a653966fdb2 100644 --- a/gcc/regrename.c +++ b/gcc/regrename.c @@ -1267,6 +1267,14 @@ static bool mode_change_ok (enum machine_mode orig_mode, enum machine_mode new_mode, unsigned int regno ATTRIBUTE_UNUSED) { + /* APPLE LOCAL begin add mode change case */ +#ifdef TARGET_POWERPC + /* This arises from FLOAT_EXTEND which is really a NOP. */ + if (orig_mode == SFmode && new_mode == DFmode) + return true; +#endif + /* APPLE LOCAL end add mode change case */ + if (GET_MODE_SIZE (orig_mode) < GET_MODE_SIZE (new_mode)) return false; @@ -1712,6 +1720,15 @@ copyprop_hardreg_forward_1 (basic_block bb, struct value_data *vd) /* Notice copies. */ if (set && REG_P (SET_DEST (set)) && REG_P (SET_SRC (set))) copy_value (SET_DEST (set), SET_SRC (set), vd); + /* APPLE LOCAL begin record that float extend is a copy */ +#ifdef TARGET_POWERPC + /* FLOAT_EXTEND is actually a copy; record that too. */ + if (set && REG_P (SET_DEST (set)) + && GET_CODE (SET_SRC (set)) == FLOAT_EXTEND + && REG_P (XEXP (SET_SRC (set), 0))) + copy_value (SET_DEST (set), XEXP (SET_SRC (set), 0), vd); +#endif + /* APPLE LOCAL end record that float extend is a copy */ if (insn == BB_END (bb)) break; |