Revert "implement `@expect` builtin (#19658)"

This reverts commit a7de02e05216db9a04e438703ddf1b6b12f3fbef.

This did not implement the accepted proposal, and I did not sign off
on the changes. I would like a chance to review this, please.

1 files changed, 0 insertions, 29 deletions

diff --git a/src/Sema.zig b/src/Sema.zig
index fcf82b1153..ca6d562eef 100644
--- a/src/Sema.zig
+++ b/src/Sema.zig
@@ -1258,7 +1258,6 @@ fn analyzeBodyInner(
                     .work_group_size    => try sema.zirWorkItem(          block, extended, extended.opcode),
                     .work_group_id      => try sema.zirWorkItem(          block, extended, extended.opcode),
                     .in_comptime        => try sema.zirInComptime(        block),
-                    .expect             => try sema.zirExpect(            block, extended),
                     .closure_get        => try sema.zirClosureGet(        block, extended),
                     // zig fmt: on
 
@@ -17554,34 +17553,6 @@ fn zirThis(
     return sema.analyzeDeclVal(block, src, this_decl_index);
 }
 
-fn zirExpect(sema: *Sema, block: *Block, inst: Zir.Inst.Extended.InstData) CompileError!Air.Inst.Ref {
-    const bin_op = sema.code.extraData(Zir.Inst.BinNode, inst.operand).data;
-    const operand = try sema.resolveInst(bin_op.lhs);
-    const expected = try sema.resolveInst(bin_op.rhs);
-
-    const expected_src = LazySrcLoc{ .node_offset_builtin_call_arg1 = bin_op.node };
-
-    if (!try sema.isComptimeKnown(expected)) {
-        return sema.fail(block, expected_src, "@expect 'expected' must be comptime-known", .{});
-    }
-
-    if (try sema.resolveValue(operand)) |op| {
-        return Air.internedToRef(op.toIntern());
-    }
-
-    if (sema.mod.backendSupportsFeature(.can_expect) and sema.mod.optimizeMode() != .Debug) {
-        return try block.addInst(.{
-            .tag = .expect,
-            .data = .{ .bin_op = .{
-                .lhs = operand,
-                .rhs = expected,
-            } },
-        });
-    } else {
-        return operand;
-    }
-}
-
 fn zirClosureGet(sema: *Sema, block: *Block, extended: Zir.Inst.Extended.InstData) CompileError!Air.Inst.Ref {
     const mod = sema.mod;
     const ip = &mod.intern_pool;