Revert "Sema: forbid @breakpoint from being called at comptime"

This reverts commit f88b523065fbb8afbd723fd6e803ace0334b713c.

Let's please go through the language proposal process for this change. I
don't see any justification for this breaking change even in the commit
message.

1 files changed, 3 insertions, 8 deletions

diff --git a/src/Sema.zig b/src/Sema.zig
index 160a531d92..752a5b1023 100644
--- a/src/Sema.zig
+++ b/src/Sema.zig
@@ -1292,7 +1292,9 @@ fn analyzeBodyInner(
                         continue;
                     },
                     .breakpoint => {
-                        try sema.zirBreakpoint(block, extended);
+                        if (!block.is_comptime) {
+                            _ = try block.addNoOp(.breakpoint);
+                        }
                         i += 1;
                         continue;
                     },
@@ -5618,13 +5620,6 @@ fn zirTrap(sema: *Sema, block: *Block, inst: Zir.Inst.Index) CompileError!Zir.In
     return always_noreturn;
 }
 
-fn zirBreakpoint(sema: *Sema, block: *Block, extended: Zir.Inst.Extended.InstData) CompileError!void {
-    const src = LazySrcLoc.nodeOffset(@bitCast(extended.operand));
-    if (block.is_comptime)
-        return sema.fail(block, src, "encountered @breakpoint at comptime", .{});
-    _ = try block.addNoOp(.breakpoint);
-}
-
 fn zirLoop(sema: *Sema, parent_block: *Block, inst: Zir.Inst.Index) CompileError!Air.Inst.Ref {
     const tracy = trace(@src());
     defer tracy.end();