// By definition, a region starts and ends in the same goroutine.
// Regions can be nested to represent subintervals.
// For example, the following code records four regions in the execution
// trace to trace the durations of sequential steps in a cappuccino making
// operation.
//
//	trace.WithRegion(ctx, "makeCappuccino", func() {
//
//	   // orderID allows to identify a specific order
//	   // among many cappuccino order region records.

Carlos Amedee <******@****.***> 1715265901 -0400

  auto& region = op->getRegion(region_idx);
  region.getArgument(0).replaceAllUsesWith(implicit_operand);
  region.front().eraseArguments(0, region.getNumArguments());
}

// Rewrites an `mhlo.if` op or its region. If `region_idx` is not set, the op
// operands and results are rewritten. If `region_idx` is set, region

	}
	if err := DB.Migrator().DropTable(&Organization{}, &Region{}); err != nil {
		t.Fatalf("Failed to migrate, got error: %s", err)
	}
	if err := DB.AutoMigrate(&Organization{}, &Region{}); err != nil {
		t.Fatalf("Failed to migrate, got error: %v", err)
	}
	region := &Region{Name: "Region1"}
	if err := DB.Create(region).Error; err != nil {
		t.Fatalf("fail to create region %v", err)
	}
	var orgs []Organization

  ParallelExecuteOp op = *this;
  const auto& regions = op.getOperation()->getRegions();
  if (regions.empty()) {
    return op.emitOpError() << "must have at least one region.";
  }

  int output_index = 0;
  for (const auto& region_and_index : llvm::enumerate(regions)) {
    auto& region = region_and_index.value();
    auto* region_terminator = region.front().getTerminator();

						break outer
					}
				}
			}
		}
		// TODO: select first language tag based on script.
	}
	if w.RegionID != tt.RegionID && w.RegionID != 0 {
		if w.RegionID != 0 && tt.RegionID != 0 && tt.RegionID.Contains(w.RegionID) {
			tt.RegionID = w.RegionID
			tt.RemakeString()
		} else if r := w.RegionID.String(); len(r) == 2 {
			// TODO: also filter macro and deprecated.

    // Update the regions. The dialect conversion framework wants new regions to
    // be created and updated, rather than updating the old op. Thus we use an
    // OperationState so we can add regions to the new op.
    OperationState state(op->getLoc(), op->getName().getStringRef(), operands,
                         new_results, op->getAttrs(), op->getSuccessors());
    for (Region& region : op->getRegions()) {

	ctx, t = trace.NewTask(ctx, "do")
	defer t.End()

	trace.Log(ctx, "log2", "do")

	// Create a region and spawn more tasks and more workers.
	trace.WithRegion(ctx, "fanout", func() {
		for i := 0; i < k; i++ {
			go func(i int) {
				trace.WithRegion(ctx, fmt.Sprintf("region%d", i), func() {
					trace.Logf(ctx, "log", "fanout region%d", i)
					if i == 2 {
						do(ctx, 0)
						return
					}
				})
			}(i)
		}
	})

		})
		var lastTimestamp trace.Time
		var n int
		// Select only the outermost regions.
		for _, i := range intervals {
			if lastTimestamp <= i.start {
				intervals[n] = i // new non-overlapping region starts.
				lastTimestamp = i.end
				n++
			}
			// Otherwise, skip because this region overlaps with a previous region.
		}
		gToIntervals[g] = intervals[:n]
	}
	return gToIntervals, nil
}

  }
};

}  // namespace

// Inserts call to the given function into the 'region'.
void CreateRegionWithCall(func::FuncOp func, Region& region, Location loc) {
  OpBuilder builder(region);
  auto block = builder.createBlock(&region);
  SmallVector<Value, 4> new_operands;
  for (Type t : func.getFunctionType().getInputs())
    new_operands.push_back(block->addArgument(t, loc));