add i32 support special case and find ctx repetition in multiple functions error.

tests/c-form/Makefile

@@ -1,19 +1,23 @@
 BPF_CLANG := clang
-CFLAGS := -O0 -emit-llvm -target bpf -c
+CFLAGS := -emit-llvm -target bpf -c
 
 SRC := $(wildcard *.bpf.c)
 LL := $(SRC:.bpf.c=.bpf.ll)
+LL2 := $(SRC:.bpf.c=.bpf.o2.ll)
 OBJ := $(SRC:.bpf.c=.bpf.o)
 
 .PHONY: all clean
 
-all: $(LL) $(OBJ)
+all: $(LL) $(OBJ) $(LL2)
 
 %.bpf.o: %.bpf.c
 	$(BPF_CLANG) -O2 -g -target bpf -c $< -o $@
 
 %.bpf.ll: %.bpf.c
-	$(BPF_CLANG) $(CFLAGS) -g -S $< -o $@
+	$(BPF_CLANG) -O0 $(CFLAGS) -g -S $< -o $@
+
+%.bpf.o2.ll: %.bpf.c
+	$(BPF_CLANG) -O2 $(CFLAGS) -g -S $< -o $@
 
 clean:
-	rm -f $(LL) $(OBJ)
+	rm -f $(LL) $(OBJ) $(LL2)

tests/c-form/i32test.bpf.c

@@ -5,9 +5,9 @@ SEC("xdp")
 int print_xdp_data(struct xdp_md *ctx)
 {
     // 'data' is a pointer to the start of packet data
-    void *data = (void *)(long)ctx->data;
+    long data = (long)ctx->data;
 
-    bpf_printk("ctx->data = %p\n", data);
+    bpf_printk("ctx->data = %lld\n", data);
 
     return XDP_PASS;
 }

tests/failing_tests/vmlinux/i32_test.py

@@ -1,4 +1,4 @@
-from ctypes import c_int64, c_int32
+from ctypes import c_int64, c_int32, c_void_p
 from pythonbpf import bpf, section, bpfglobal, compile_to_ir, compile
 from vmlinux import struct_xdp_md
 from vmlinux import XDP_PASS
@@ -8,10 +8,16 @@ from vmlinux import XDP_PASS
 @section("xdp")
 def print_xdp_data(ctx: struct_xdp_md) -> c_int64:
     data = ctx.data  # 32-bit field: packet start pointer
-    something = c_int32(2 + data)
+    something = c_void_p(data)
     print(f"ctx->data = {something}")
     return c_int64(XDP_PASS)
 
+@bpf
+@section("xdp")
+def print_xdp_dat2a(ct2x: struct_xdp_md) -> c_int64:
+    data = ct2x.data  # 32-bit field: packet start pointer
+    print(f"ct2x->data = {data}")
+    return c_int64(XDP_PASS)
 
 @bpf
 @bpfglobal