stage2: re-use ZIR for comptime and inline calls

Instead of freeing ZIR after semantic analysis, we keep it around so
that it can be used for comptime calls, inline calls, and generic
function calls. ZIR memory is now managed by the Decl arena.

Debug dump() functions are conditionally compiled; only available in
Debug builds of the compiler.

Add a test for an inline function call.

2 files changed, 2 insertions, 2 deletions

diff --git a/src/codegen/c.zig b/src/codegen/c.zig
index 712d663af0..1a89e22d48 100644
--- a/src/codegen/c.zig
+++ b/src/codegen/c.zig
@@ -275,7 +275,7 @@ pub fn generate(file: *C, module: *Module, decl: *Decl) !void {
         try writer.writeAll(" {");
 
         const func: *Module.Fn = func_payload.data;
-        const instructions = func.data.body.instructions;
+        const instructions = func.body.instructions;
         if (instructions.len > 0) {
             try writer.writeAll("\n");
             for (instructions) |inst| {
diff --git a/src/codegen/wasm.zig b/src/codegen/wasm.zig
index 1eb4f5bc29..036243dcca 100644
--- a/src/codegen/wasm.zig
+++ b/src/codegen/wasm.zig
@@ -63,7 +63,7 @@ pub fn genCode(buf: *ArrayList(u8), decl: *Decl) !void {
     // TODO: check for and handle death of instructions
     const tv = decl.typed_value.most_recent.typed_value;
     const mod_fn = tv.val.castTag(.function).?.data;
-    for (mod_fn.data.body.instructions) |inst| try genInst(buf, decl, inst);
+    for (mod_fn.body.instructions) |inst| try genInst(buf, decl, inst);
 
     // Write 'end' opcode
     try writer.writeByte(0x0B);