diff options
Diffstat (limited to 'gcc/config/pa/pa.c')
| -rw-r--r-- | gcc/config/pa/pa.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/gcc/config/pa/pa.c b/gcc/config/pa/pa.c index 3aee1ad..9ece6dd 100644 --- a/gcc/config/pa/pa.c +++ b/gcc/config/pa/pa.c @@ -617,6 +617,27 @@ move_src_operand (rtx op, enum machine_mode mode) return memory_address_p (mode, XEXP (op, 0)); } +/* Accept anything that can be used as the source operand for a prefetch + instruction. */ +int +prefetch_operand (rtx op, enum machine_mode mode) +{ + if (GET_CODE (op) != MEM) + return 0; + + /* Until problems with management of the REG_POINTER flag are resolved, + we need to delay creating prefetch insns with unscaled indexed addresses + until CSE is not expected. */ + if (!TARGET_NO_SPACE_REGS + && !cse_not_expected + && GET_CODE (XEXP (op, 0)) == PLUS + && REG_P (XEXP (XEXP (op, 0), 0)) + && REG_P (XEXP (XEXP (op, 0), 1))) + return 0; + + return memory_address_p (mode, XEXP (op, 0)); +} + /* Accept REG and any CONST_INT that can be moved in one instruction into a general register. */ int |