diff options
Diffstat (limited to 'gcc/function.c')
| -rw-r--r-- | gcc/function.c | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/gcc/function.c b/gcc/function.c index d747ce6..44cee08 100644 --- a/gcc/function.c +++ b/gcc/function.c @@ -390,6 +390,12 @@ int temp_slot_level; /* Current nesting level for variables in a block. */ int var_temp_slot_level; + +/* When temporaries are created by TARGET_EXPRs, they are created at + this level of temp_slot_level, so that they can remain allocated + until no longer needed. CLEANUP_POINT_EXPRs define the lifetime + of TARGET_EXPRs. */ +int target_temp_slot_level; /* This structure is used to record MEMs or pseudos used to replace VAR, any SUBREGs of VAR, and any MEMs containing VAR as an address. We need to @@ -1290,6 +1296,33 @@ push_temp_slots_for_block () var_temp_slot_level = temp_slot_level; } +/* Likewise, but save the new level as the place to allocate temporaries + for TARGET_EXPRs. */ + +void +push_temp_slots_for_target () +{ + push_temp_slots (); + + target_temp_slot_level = temp_slot_level; +} + +/* Set and get the value of target_temp_slot_level. The only + permitted use of these functions is to save and restore this value. */ + +int +get_target_temp_slot_level () +{ + return target_temp_slot_level; +} + +void +set_target_temp_slot_level (level) + int level; +{ + target_temp_slot_level = level; +} + /* Pop a temporary nesting level. All slots in use in the current level are freed. */ @@ -2785,7 +2818,8 @@ purge_addressof_1 (loc, insn, force) if (GET_CODE (sub) == MEM) sub = gen_rtx_MEM (GET_MODE (x), copy_rtx (XEXP (sub, 0))); - if (GET_CODE (sub) == REG && MEM_VOLATILE_P (x)) + if (GET_CODE (sub) == REG + && (MEM_VOLATILE_P (x) || GET_MODE (x) == BLKmode)) { put_addressof_into_stack (XEXP (x, 0)); return; |