stage2: cleanups to wasm memory intrinsics

 * AIR: use pl_op instead of ty_pl for wasm_memory_size. No need to
   store the type because the type is always `u32`.
 * AstGen: use coerced_ty for `@wasmMemorySize` and `@wasmMemoryGrow`
   and do the coercions in Sema.
 * Sema: use more accurate source locations for errors.
 * Provide more information in the compiler error message.
 * Codegen: use liveness data to avoid lowering unused
   `@wasmMemorySize`.
 * LLVM backend: add implementation
   - I wasn't able to test it because we are hitting a linker error for
     `-target wasm32-wasi -fLLVM`.
 * C backend: use `zig_unimplemented()` instead of silently doing wrong
   behavior for these builtins.
 * behavior tests: branch only on stage2_arch for inclusion of the
   wasm.zig file. We would change it to `builtin.cpu.arch` but that is
   causing a compiler crash on some backends.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/AstGen.zig b/src/AstGen.zig
index d6d29d4a54..3fe9630c75 100644
--- a/src/AstGen.zig
+++ b/src/AstGen.zig
@@ -7140,7 +7140,7 @@ fn builtinCall(
         // zig fmt: on
 
         .wasm_memory_size => {
-            const operand = try comptimeExpr(gz, scope, .{ .ty = .u32_type }, params[0]);
+            const operand = try comptimeExpr(gz, scope, .{ .coerced_ty = .u32_type }, params[0]);
             const result = try gz.addExtendedPayload(.wasm_memory_size, Zir.Inst.UnNode{
                 .node = gz.nodeIndexToRelative(node),
                 .operand = operand,
@@ -7148,8 +7148,8 @@ fn builtinCall(
             return rvalue(gz, rl, result, node);
         },
         .wasm_memory_grow => {
-            const index_arg = try comptimeExpr(gz, scope, .{ .ty = .u32_type }, params[0]);
-            const delta_arg = try expr(gz, scope, .{ .ty = .u32_type }, params[1]);
+            const index_arg = try comptimeExpr(gz, scope, .{ .coerced_ty = .u32_type }, params[0]);
+            const delta_arg = try expr(gz, scope, .{ .coerced_ty = .u32_type }, params[1]);
             const result = try gz.addExtendedPayload(.wasm_memory_grow, Zir.Inst.BinNode{
                 .node = gz.nodeIndexToRelative(node),
                 .lhs = index_arg,