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Change allocation pass to generate typed temp variables

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Pragyansh Chaturvedi
2025-11-04 06:20:39 +05:30
parent 752f564d3f
commit 123a92af1d
2 changed files with 34 additions and 11 deletions
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30
pythonbpf/allocation_pass.py
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@ -199,17 +199,33 @@ def _allocate_for_binop(builder, var_name, local_sym_tab):
logger.info(f"Pre-allocated {var_name} for binop result")
def _get_type_name(ir_type):
"""Get a string representation of an IR type."""
if isinstance(ir_type, ir.IntType):
return f"i{ir_type.width}"
elif isinstance(ir_type, ir.PointerType):
return "ptr"
elif isinstance(ir_type, ir.ArrayType):
return f"[{ir_type.count}x{_get_type_name(ir_type.element)}]"
else:
return str(ir_type).replace(" ", "")
def allocate_temp_pool(builder, max_temps, local_sym_tab):
"""Allocate the temporary scratch space pool for helper arguments."""
if max_temps == 0:
if not max_temps:
logger.info("No temp pool allocation needed")
return
logger.info(f"Allocating temp pool of {max_temps} variables")
for i in range(max_temps):
temp_name = f"__helper_temp_{i}"
temp_var = builder.alloca(ir.IntType(64), name=temp_name)
temp_var.align = 8
local_sym_tab[temp_name] = LocalSymbol(temp_var, ir.IntType(64))
for tmp_type, cnt in max_temps.items():
type_name = _get_type_name(tmp_type)
logger.info(f"Allocating temp pool of {cnt} variables of type {type_name}")
for i in range(cnt):
temp_name = f"__helper_temp_{type_name}_{i}"
temp_var = builder.alloca(tmp_type, name=temp_name)
temp_var.align = _get_alignment(tmp_type)
local_sym_tab[temp_name] = LocalSymbol(temp_var, tmp_type)
logger.debug(f"Allocated temp variable: {temp_name}")
def _allocate_for_name(builder, var_name, rval, local_sym_tab):